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Valder S, Staltner R, Bizjak DA, Esatbeyoglu T, Herdegen V, Köpsel M, Kostov T, Bergheim I, Diel P. Effect of Sugar- and Polyphenol-Rich, Diluted Cloudy Apple Juice on the Intestinal Barrier after Moderate Endurance Exercise and in Ultra-Marathon Runners. Nutrients 2024; 16:1353. [PMID: 38732600 PMCID: PMC11085185 DOI: 10.3390/nu16091353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
BACKGROUND Exercise and the consumption of sugars result in a dysfunction of the intestinal barrier (IB). Here, we determined the effect of sugar in a natural matrix on the intestinal barrier after moderate (A) and intensive endurance exercise (B). METHOD The IB function was determined before (pre) and after running (post), and 120 and 180 min after consuming the drink by measuring serum endotoxin concentrations (lipopolysaccharides-LPS), IL-6, CD14, and i-FABP. In study A, nonspecifically trained participants (n = 24, males and females, age 26 ± 4) ran for one hour at 80% of their individual anaerobic threshold (IAT). After finishing, the runners consumed, in a crossover setup, either 500 mL of water, diluted cloudy apple juice (test drink), or an identical drink (placebo) without the fruit juice matrix (FJM). In study B, the participants (n = 30, males and females, age 50 ± 9) completed an ultra-marathon run, were divided into groups, and consumed one of the above-mentioned drinks. RESULTS Study A: Exercise resulted in a significant increase in serum LPS, i-FABP, and IL-6, which decreased fast after finishing. No impact of the different drinks on LPS i-FABP, or IL-6 could be observed, but there was an impact on CD14. Study B: The ultra-marathon resulted in a strong increase in serum LPS, which decreased fast after finishing in the water and test drink groups, but not in the placebo group. CONCLUSIONS The consumed drinks did not affect the kinetics of IB regeneration after moderate exercise, but impacted CD14 serum concentrations, indicating possible beneficial effects of the FJM on the immune system. After an ultra-marathon, IB function regenerates very fast. The intake of sugar (placebo) seems to have had a negative impact on IB regeneration, which was diminished by the presence of the FJM.
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Affiliation(s)
- Sarah Valder
- Department of Molecular and Cellular Sports Medicine, German Sports University Cologne, 50933 Cologne, Germany; (S.V.); (T.K.)
| | - Raphaela Staltner
- Department of Nutritional Sciences, Molecular Nutritional Science, University of Vienna, 1090 Vienna, Austria; (R.S.); (I.B.)
| | - Daniel Alexander Bizjak
- Division of Sports and Rehabilitation Medicine, University Hospital Ulm, 89075 Ulm, Germany;
| | - Tuba Esatbeyoglu
- Department of Molecular Food Chemistry and Food Development, Institute of Food and One Health, Gottfried Wilhelm Leibniz University Hannover, 30167 Hannover, Germany; (T.E.); (M.K.)
| | | | - Magdalena Köpsel
- Department of Molecular Food Chemistry and Food Development, Institute of Food and One Health, Gottfried Wilhelm Leibniz University Hannover, 30167 Hannover, Germany; (T.E.); (M.K.)
| | - Tihomir Kostov
- Department of Molecular and Cellular Sports Medicine, German Sports University Cologne, 50933 Cologne, Germany; (S.V.); (T.K.)
| | - Ina Bergheim
- Department of Nutritional Sciences, Molecular Nutritional Science, University of Vienna, 1090 Vienna, Austria; (R.S.); (I.B.)
| | - Patrick Diel
- Department of Molecular and Cellular Sports Medicine, German Sports University Cologne, 50933 Cologne, Germany; (S.V.); (T.K.)
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Fowler A, Knaus KR, Khuu S, Khalilimeybodi A, Schenk S, Ward SR, Fry AC, Rangamani P, McCulloch AD. Network model of skeletal muscle cell signalling predicts differential responses to endurance and resistance exercise training. Exp Physiol 2024. [PMID: 38643471 DOI: 10.1113/ep091712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 03/20/2024] [Indexed: 04/22/2024]
Abstract
Exercise-induced muscle adaptations vary based on exercise modality and intensity. We constructed a signalling network model from 87 published studies of human or rodent skeletal muscle cell responses to endurance or resistance exercise in vivo or simulated exercise in vitro. The network comprises 259 signalling interactions between 120 nodes, representing eight membrane receptors and eight canonical signalling pathways regulating 14 transcriptional regulators, 28 target genes and 12 exercise-induced phenotypes. Using this network, we formulated a logic-based ordinary differential equation model predicting time-dependent molecular and phenotypic alterations following acute endurance and resistance exercises. Compared with nine independent studies, the model accurately predicted 18/21 (85%) acute responses to resistance exercise and 12/16 (75%) acute responses to endurance exercise. Detailed sensitivity analysis of differential phenotypic responses to resistance and endurance training showed that, in the model, exercise regulates cell growth and protein synthesis primarily by signalling via mechanistic target of rapamycin, which is activated by Akt and inhibited in endurance exercise by AMP-activated protein kinase. Endurance exercise preferentially activates inflammation via reactive oxygen species and nuclear factor κB signalling. Furthermore, the expected preferential activation of mitochondrial biogenesis by endurance exercise was counterbalanced in the model by protein kinase C in response to resistance training. This model provides a new tool for investigating cross-talk between skeletal muscle signalling pathways activated by endurance and resistance exercise, and the mechanisms of interactions such as the interference effects of endurance training on resistance exercise outcomes.
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Affiliation(s)
- Annabelle Fowler
- Department of Bioengineering, University of California San, Diego, La Jolla, California, USA
| | - Katherine R Knaus
- Department of Bioengineering, University of California San, Diego, La Jolla, California, USA
| | - Stephanie Khuu
- Department of Bioengineering, University of California San, Diego, La Jolla, California, USA
| | - Ali Khalilimeybodi
- Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California, USA
| | - Simon Schenk
- Department of Orthopaedic Surgery, University of California San Diego, La Jolla, California, USA
| | - Samuel R Ward
- Department of Orthopaedic Surgery, University of California San Diego, La Jolla, California, USA
| | - Andrew C Fry
- Department of Health, Sport and Exercise Sciences, University of Kansas, Lawrence, Kansas, USA
| | - Padmini Rangamani
- Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California, USA
| | - Andrew D McCulloch
- Department of Bioengineering, University of California San, Diego, La Jolla, California, USA
- Department of Medicine, University of California San Diego, La Jolla, California, USA
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Moura F, Romeiro C, Petriz B, Cavichiolli N, Almeida JA, Castro A, Franco OL. Endurance exercise associated with a fructooligosaccharide diet modulates gut microbiota and increases colon absorptive area. J Gastroenterol Hepatol 2024. [PMID: 38642000 DOI: 10.1111/jgh.16563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 03/01/2024] [Accepted: 03/25/2024] [Indexed: 04/22/2024]
Abstract
BACKGROUND AND AIM Fructooligosaccharide (FOS) supplementation can stimulate beneficial intestinal bacteria growth, but little is known about its influence on training performance. Therefore, this study analyzed FOS and exercise effects on gut microbiota and intestinal morphology of C57Bl/6 mice. METHODS Forty male mice were divided into four groups: standard diet-sedentary (SDS), standard diet-exercised (SDE), FOS supplemented (7.5% FOS)-sedentary (FDS), and FOS supplemented-exercised (FDE), n = 10 each group. Exercise training consisted of 60 min/day, 3 days/week, for 12 weeks. RESULTS SDE and FDE groups had an increase in aerobic performance compared to the pretraining period and SDS and FDS groups (P < 0.01), respectively. Groups with FOS increased colonic crypts size (P < 0.05). The FDE group presented rich microbiota (α-diversity) compared to other groups. The FDE group also acquired a greater microbial abundance (β-diversity) than other groups. The FDE group had a decrease in the Ruminococcaceae (P < 0.002) and an increase in Roseburia (P < 0.003), Enterorhabdus (P < 0.004) and Anaerotruncus (P < 0.006). CONCLUSIONS These findings suggest that aerobic exercise associated with FOS supplementation modulates gut microbiota and can increase colonic crypt size without improving endurance exercise performance.
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Affiliation(s)
- Filipe Moura
- Postgraduate Program in Physical Education, Catholic University of Brasília, Brasília, Brazil
- Laboratory of Molecular Physiology of Exercise, University Center UDF, Brasília, Brazil
- Center for Proteomic and Biochemical Analysis, Postgraduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasília, Brasília, Brazil
| | - Caroline Romeiro
- Postgraduate Program in Physical Education, Catholic University of Brasília, Brasília, Brazil
| | - Bernardo Petriz
- Laboratory of Molecular Physiology of Exercise, University Center UDF, Brasília, Brazil
- Center for Proteomic and Biochemical Analysis, Postgraduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasília, Brasília, Brazil
| | - Nathalia Cavichiolli
- S-Inova Biotech, Postgraduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Brazil
| | | | - Alinne Castro
- S-Inova Biotech, Postgraduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Brazil
| | - Octavio L Franco
- Postgraduate Program in Physical Education, Catholic University of Brasília, Brasília, Brazil
- Center for Proteomic and Biochemical Analysis, Postgraduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasília, Brasília, Brazil
- S-Inova Biotech, Postgraduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Brazil
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Aragón-Vela J, González-Acevedo O, De la Cruz-Márquez JC, Rojas Ruíz FJ, Marín MM, Casuso RA, Plaza-Diaz J, Huertas JFR. The Effects of Acute Deep Seawater Supplementation on Muscle Function after Triathlon. J Clin Med 2024; 13:2258. [PMID: 38673531 PMCID: PMC11051008 DOI: 10.3390/jcm13082258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
(1) Background: Trainers and athletes have always sought to reduce the failure of muscle function during long endurance events. However, nowadays, it is a topic that is generating much debate in the scientific field. Currently, deep-sea water (DSW) intake seems to be a suitable hydration alternative for this type of endurance event. Therefore, the aim of this study was to determine whether DSW consumption during a triathlon event could preserve muscle function after exercise. (2) Methods: Nineteen trained male triathletes (age = 39.0 ± 4.25 years; BMI = 23.67 ± 1.81 kg/m2) randomly performed three triathlons, one of them consuming DSW (Totum SPORT 30 AB, Laboratories Quinton International, S.L., Spain), the other consuming isotonic placebo and the last with tap water-hydration. A vertical jump test with countermovement and an isometric muscle strength test were conducted before and after the triathlon test. (3) Results: There was a significant difference between treatment × time during the isometric muscle strength test. Based on the Tukey post hoc analysis, the peak net force decreased statistically in the placebo (p = 0.045) and control conditions (p = 0.026), but not in the experimental condition (p = 0.121). In addition, all of the conditions studied obtained similar results in the countermovement vertical jump after exercise. (4) Conclusions: As a result, consumption of DSW seems to delay the failure of muscle function specifically in isometric exercises but does not improve performance in sports. Thus, DSW does not alter muscle capacity in a negative way; therefore, its consumption may be recommended.
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Affiliation(s)
- Jerónimo Aragón-Vela
- Department of Health Sciences, Area of Physiology, Campus “Las Lagunillas”, Building B3, University of Jaen, 23071 Jaén, Spain;
| | - Olivia González-Acevedo
- Institute of Nutrition and Food Technology “José Mataix”, Biomedical Research Center, University of Granada, 18016 Granada, Spain; (O.G.-A.); (J.F.R.H.)
| | - Juan Carlos De la Cruz-Márquez
- Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain; (F.J.R.R.); (M.M.M.)
| | - Francisco Javier Rojas Ruíz
- Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain; (F.J.R.R.); (M.M.M.)
| | - Manuel Martínez Marín
- Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18071 Granada, Spain; (F.J.R.R.); (M.M.M.)
| | - Rafael A. Casuso
- Departamento de Ciencias de la Salud, Universidad Loyola Andalucía, 41704 Sevilla, Spain;
| | - Julio Plaza-Diaz
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, 18071 Granada, Spain
- Instituto de Investigación Biosanitaria IBS.GRANADA, Complejo Hospitalario Universitario de Granada, 18014 Granada, Spain
- Children’s Hospital of Eastern Ontario Research Institute, Ottawa, ON K1H 8L1, Canada
| | - Jesus F. Rodriguez Huertas
- Institute of Nutrition and Food Technology “José Mataix”, Biomedical Research Center, University of Granada, 18016 Granada, Spain; (O.G.-A.); (J.F.R.H.)
- Department of Physiology, School of Pharmacy, Campus de Cartuja s/n, University of Granada, 18071 Granada, Spain
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Moore DR, Gillen JB, West DWD, Kato H, Volterman KA. Protein requirements may be lower on a training compared to rest day but are not influenced by moderate training volumes in endurance trained males. Appl Physiol Nutr Metab 2024. [PMID: 38603808 DOI: 10.1139/apnm-2023-0297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
The impact of training volume on protein requirements in endurance trained males was investigated with indicator amino acid oxidation (IAAO) methodology on a recovery day (REST) or after a 10 or 20 km run while consuming a single suboptimal protein intake (0.93 g/kg/day). Phenylalanine excretion (F13CO2; inverse proxy for whole body protein synthesis) was greatest and phenylalanine net balance was lowest on REST compared to post-exercise recovery with no difference between training volumes. Single point F13CO2 was indistinguishable from past IAAO studies using multiple protein intakes. Our results suggest that protein requirements may be greatest on recovery days but are not influenced by moderate training volumes in endurance athletes.
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Affiliation(s)
- Daniel R Moore
- Faculty of Kinesiology and Physical Education, University of Toronto, ON, Canada
| | - Jenna B Gillen
- Faculty of Kinesiology and Physical Education, University of Toronto, ON, Canada
| | - Daniel W D West
- Faculty of Kinesiology and Physical Education, University of Toronto, ON, Canada
- KITE Research, Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada
| | | | - Kimberly A Volterman
- Faculty of Kinesiology and Physical Education, University of Toronto, ON, Canada
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Clauss M, Burkhardt M, Wöber S, Skålhegg BS, Jensen J. Corrigendum: Effect of five hours of mixed exercise on urinary nitrogen excretion in healthy moderate-to-well-trained young adults. Front Nutr 2024; 11:1406641. [PMID: 38655544 PMCID: PMC11036336 DOI: 10.3389/fnut.2024.1406641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 03/28/2024] [Indexed: 04/26/2024] Open
Abstract
[This corrects the article DOI: 10.3389/fnut.2024.1345922.].
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Affiliation(s)
- Matthieu Clauss
- Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
| | - Meike Burkhardt
- Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
- Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany
| | - Sophie Wöber
- Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
- Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany
| | - Bjørn Steen Skålhegg
- Department of Nutrition, Division for Molecular Nutrition, University of Oslo, Oslo, Norway
| | - Jørgen Jensen
- Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
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Codella R, Gallo G, Meloni A, Luzi L, Filipas L. Elite Cyclists with Type 1 Diabetes Show Acceptable Glycemic Excursions During a Time-Trial Performance Under High-Definition Transcranial Direct Current Stimulation. Endocr Pract 2024; 30:380-383. [PMID: 38307458 DOI: 10.1016/j.eprac.2024.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/12/2024] [Accepted: 01/18/2024] [Indexed: 02/04/2024]
Abstract
OBJECTIVE To evaluate the effects of bilateral dorsolateral prefrontal cortex high-definition transcranial direct current stimulation (HD-tDCS) on glycemic excursions during a time-trial performance in elite cyclists with type 1 diabetes (T1D). METHODS In a double-blind, randomized crossover order, 9 elite cyclists with T1D (no complications) underwent either HD-tDCS (F3 and F4) or control (SHAM) and completed a constant-load trial at 75% of the second ventilatory threshold plus a 15-km cycling time trial. RESULTS Real-time continuous glucose monitoring revealed similar glycemic variability between the 2 conditions, showing a significant effect of time but no interaction (stimulation × time) or stimulation effect. CONCLUSION Because glycemic control is crucial for both health and performance, these findings suggest that HD-tDCS could be safely used to enhance performance in athletes with T1D and potentially in a broader active T1D population.
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Affiliation(s)
- Roberto Codella
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; Department of Endocrinology, Nutrition and Metabolic Diseases, IRCCS MultiMedica, Milan, Italy.
| | - Gabriele Gallo
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy
| | - Andrea Meloni
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; Department of Endocrinology, Nutrition and Metabolic Diseases, IRCCS MultiMedica, Milan, Italy
| | - Livio Luzi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; Department of Endocrinology, Nutrition and Metabolic Diseases, IRCCS MultiMedica, Milan, Italy
| | - Luca Filipas
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy; Department of Endocrinology, Nutrition and Metabolic Diseases, IRCCS MultiMedica, Milan, Italy
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Lee SJL, Van Rens FECA, Peiffer JJ. Effects of In-Exercise Carbohydrate Supplementation on Prolonged High-Intensity Exercise Performance in Oral Contraceptive Users. Int J Sports Physiol Perform 2024; 19:356-364. [PMID: 38237580 DOI: 10.1123/ijspp.2023-0143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 11/28/2023] [Accepted: 12/07/2023] [Indexed: 03/23/2024]
Abstract
PURPOSE To examine the impact of oral contraceptive (OC) phases on performance, physiological, and subjective responses to prolonged, intensive exercise when carbohydrate (CHO) stores are reduced. METHODS Ten well-trained female cyclists using monophasic OC completed 4 identical trials (>150 min) under conditions of in-trial 60-g·h-1 CHO supplementation (CHO+) or placebo (CHO-) during the sugar- (SUG) and active-pill (ACT) phases of their OC cycle. Each trial comprised two 400-kcal time trials (TT) separated by 1 hour of submaximal cycling at first ventilatory threshold. RESULTS Change in completion time from TT1 to TT2 was minimized in CHO+ compared with CHO- (4.06 [2.55] vs 6.08 [5.33] min; P = .019, effect size = -0.36). An interaction effect of OC and CHO was observed for time to complete TT (P = .006), mean TT power (P = .002), mean TT heart rate (P = .002), and posttrial emotional balance (P = .020) and negative emotional state (P = .033). In ACT, mean TT power and heart rate were higher in CHO+ when compared with CHO-, resulting in faster TTs in CHO+ and improved posttrial emotional well-being. When CHO was not supplemented, TT power and heart rate were higher in SUG when compared with ACT, resulting in faster TTs in SUG and improved posttrial emotional balance. CONCLUSION CHO depletion during ACT negatively influenced TT performance and emotional well-being when compared with SUG. Irrespective of OC pill phase, CHO supplementation should be prioritized to sustain performance and improve postexercise recovery-stress balance.
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Affiliation(s)
- Serene J L Lee
- Center for Healthy Aging, Murdoch University, Perth, WA, Australia
- Murdoch Applied Sports Science Laboratory, Murdoch University, Perth, WA, Australia
| | | | - Jeremiah J Peiffer
- Center for Healthy Aging, Murdoch University, Perth, WA, Australia
- Murdoch Applied Sports Science Laboratory, Murdoch University, Perth, WA, Australia
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Scaricamazza S, Nesci V, Salvatori I, Fenili G, Rosina M, Gloriani M, Paronetto MP, Madaro L, Ferri A, Valle C. Endurance exercise has a negative impact on the onset of SOD1-G93A ALS in female mice and affects the entire skeletal muscle-motor neuron axis. Front Pharmacol 2024; 15:1360099. [PMID: 38590640 PMCID: PMC10999529 DOI: 10.3389/fphar.2024.1360099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 03/04/2024] [Indexed: 04/10/2024] Open
Abstract
Background Amyotrophic lateral sclerosis (ALS) is a fatal neuromuscular disease characterized by the degeneration of motor neurons that leads to muscle wasting and atrophy. Epidemiological and experimental evidence suggests a causal relationship between ALS and physical activity (PA). However, the impact of PA on motor neuron loss and sarcopenia is still debated, probably because of the heterogeneity and intensities of the proposed exercises. With this study, we aimed to clarify the effect of intense endurance exercise on the onset and progression of ALS in the SOD1-G93A mouse model. Methods We randomly selected four groups of twelve 35-day-old female mice. SOD1-G93A and WT mice underwent intense endurance training on a motorized treadmill for 8 weeks, 5 days a week. During the training, we measured muscle strength, weight, and motor skills and compared them with the corresponding sedentary groups to define the disease onset. At the end of the eighth week, we analyzed the skeletal muscle-motor neuron axis by histological and molecular techniques. Results Intense endurance exercise anticipates the onset of the disease by 1 week (age of the onset: trained SOD1-G93A = 63.17 ± 2.25 days old; sedentary SOD1-G93A = 70.75 ± 2.45 days old). In SOD1-G93A mice, intense endurance exercise hastens the muscular switch to a more oxidative phenotype and worsens the denervation process by dismantling neuromuscular junctions in the tibialis anterior, enhancing the Wallerian degeneration in the sciatic nerve, and promoting motor neuron loss in the spinal cord. The training exacerbates neuroinflammation, causing immune cell infiltration in the sciatic nerve and a faster activation of astrocytes and microglia in the spinal cord. Conclusion Intense endurance exercise, acting on skeletal muscles, worsens the pathological hallmarks of ALS, such as denervation and neuroinflammation, brings the onset forward, and accelerates the progression of the disease. Our findings show the potentiality of skeletal muscle as a target for both prognostic and therapeutic strategies; the preservation of skeletal muscle health by specific intervention could counteract the dying-back process and protect motor neurons from death. The physiological characteristics and accessibility of skeletal muscle further enhance its appeal as a therapeutic target.
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Affiliation(s)
| | - Valentina Nesci
- IRCCS Fondazione Santa Lucia, Rome, Italy
- Department of Systems Medicine, University of Roma “Tor Vergata”, Rome, Italy
| | - Illari Salvatori
- IRCCS Fondazione Santa Lucia, Rome, Italy
- Department of Experimental Medicine, University of Roma “La Sapienza”, Rome, Italy
| | - Gianmarco Fenili
- IRCCS Fondazione Santa Lucia, Rome, Italy
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
| | - Marco Rosina
- IRCCS Fondazione Santa Lucia, Rome, Italy
- Neurology Unit, PTV Foundation Tor Vergata University Hospital, Rome, Italy
| | - Michela Gloriani
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, University of Roma “La Sapienza”, Rome, Italy
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Maria Paola Paronetto
- IRCCS Fondazione Santa Lucia, Rome, Italy
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
| | - Luca Madaro
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, University of Roma “La Sapienza”, Rome, Italy
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
| | - Alberto Ferri
- IRCCS Fondazione Santa Lucia, Rome, Italy
- National Research Council (CNR), Institute of Translational Pharmacology (IFT), Rome, Italy
| | - Cristiana Valle
- IRCCS Fondazione Santa Lucia, Rome, Italy
- National Research Council (CNR), Institute of Translational Pharmacology (IFT), Rome, Italy
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Xia Q, Lan J, Pan Y, Wang Y, Song T, Yang Y, Tian X, Chen L, Gu Z, Ding YY. Effects of Dityrosine on Lactic Acid Metabolism in Mice Gastrocnemius Muscle During Endurance Exercise via the Oxidative Stress-Induced Mitochondria Damage. J Agric Food Chem 2024; 72:5269-5282. [PMID: 38439706 DOI: 10.1021/acs.jafc.3c09649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
Dityrosine (Dityr) has been detected in commercial food as a product of protein oxidation and has been shown to pose a threat to human health. This study aims to investigate whether Dityr causes a decrease in lactic acid metabolism in the gastrocnemius muscle during endurance exercise. C57BL/6 mice were administered Dityr or saline by gavage for 13 weeks and underwent an endurance exercise test on a treadmill. Dityr caused a severe reduction in motion displacement and endurance time, along with a significant increase in lactic acid accumulation in the blood and gastrocnemius muscle in mice after exercise. Dityr induced significant mitochondrial defects in the gastrocnemius muscle of mice. Additionally, Dityr induced serious oxidative stress in the gastrocnemius muscle, accompanied by inflammation, which might be one of the causes of mitochondrial dysfunction. Moreover, significant apoptosis in the gastrocnemius muscle increased after exposure to Dityr. This study confirmed that Dityr induced oxidative stress in the gastrocnemius muscle, which further caused significant mitochondrial damage in the gastrocnemius muscle cell, resulting in decreased capacity of lactic acid metabolism and finally affected performance in endurance exercise. This may be one of the possible mechanisms by which highly oxidized foods cause a decreased muscle energy metabolism.
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Affiliation(s)
- Qiudong Xia
- Department of Physical Education, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Jinchi Lan
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yuxiang Pan
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yuxin Wang
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Tianyuan Song
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Ying Yang
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Xu Tian
- Beijing Competitor Sports Nutrition Research Institute, Beijing 100027, China
| | - Longjun Chen
- Huzhou Shengtao Biotechnology LLC, Huzhou 313000, China
| | - Zhenyu Gu
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yin-Yi Ding
- Food Safety Key Laboratory of Zhejiang Province, National Experimental Teaching Demonstration Center for Food Engineering and Quality and Safety, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
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11
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de Oliveira NG, de Oliveira LF, da Silva RP, Oliveira TN, Möller GB, Murasaki J, Ramires MA, Azevedo RDA, Artioli GG, Roschel H, Gualano B, Saunders B. Trehalose Improved 20-min Cycling Time-Trial Performance After 100-min Cycling in Amateur Cyclists. Int J Sport Nutr Exerc Metab 2024:1-8. [PMID: 38458180 DOI: 10.1123/ijsnem.2023-0241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/10/2024] [Accepted: 01/30/2024] [Indexed: 03/10/2024]
Abstract
Carbohydrate (CHO) supplementation during endurance exercise can improve performance. However, it is unclear whether low glycemic index (GI) CHO leads to differential ergogenic and metabolic effects compared with a standard high GI CHO. This study investigated the ergogenic and metabolic effects of CHO supplementation with distinct GIs, namely, (a) trehalose (30 g/hr), (b) isomaltulose (30 g/hr), (c) maltodextrin (60 g/hr), and (d) placebo (water). In this double-blind, crossover, counterbalanced, placebo-controlled study, 13 male cyclists cycled a total of 100 min at varied exercise intensity (i.e., 10-min stages at 1.5, 2.0, and 2.5 W/kg; repeated three times plus two 5-min stages at 1.0 W/kg before and after the protocol), followed by a 20-min time trial on four separated occasions. Blood glucose and lactate (every 20 min), heart rate, and ratings of perceived exertion were collected throughout, and muscle biopsies were taken before and immediately after exercise. The results showed that trehalose improved time-trial performance compared with placebo (total work done 302 ± 39 vs. 287 ± 48 kJ; p = .01), with no other differences between sessions (all p ≥ .07). Throughout the 100-min protocol, blood glucose was higher with maltodextrin compared with the other supplements at all time points (all p < .05). Heart rate, ratings of perceived exertion, muscle glycogen content, blood glucose, and lactate were not different between conditions when considering the 20-min time trial (all p > .05). Trehalose supplementation throughout endurance exercise improved cycling performance and appears to be an appropriate CHO source for exercise tasks up to 2 hr. No ergogenic superiority between the different types of CHO was established.
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Affiliation(s)
- Nathan Gobbi de Oliveira
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Luana Farias de Oliveira
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Rafael Pires da Silva
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Tamires Nunes Oliveira
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Gabriella Berwig Möller
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Juliana Murasaki
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Manoel Antônio Ramires
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Rafael de Almeida Azevedo
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Guilherme Giannini Artioli
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Hamilton Roschel
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Bruno Gualano
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
- Food Research Center, University of São Paulo, Sao Paulo, SP, Brazil
| | - Bryan Saunders
- Applied Physiology and Nutrition Research Group - Center of Lifestyle Medicine, Faculdade de Medicina FMUSP, Universidade de São Paulo, Sao Paulo, SP, Brazil
- Institute of Orthopaedics and Traumatology, Faculty of Medicine FMUSP, University of São Paulo, Sao Paulo, SP, Brazil
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12
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Hasegawa J, Azevedo R, Silveira A, Lima-Silva A, Bertuzzi R. Wearable near-infrared spectroscopy: reliability and sensitivity among different endurance cycling exercise intensities. Braz J Med Biol Res 2024; 57:e13102. [PMID: 38451607 PMCID: PMC10913389 DOI: 10.1590/1414-431x2024e13102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/01/2024] [Indexed: 03/08/2024] Open
Abstract
The present study investigated the reliability and sensitivity of a wearable near-infrared spectroscopy (wNIRS) device in moderate and heavy exercise intensity domains. On three separate days, eleven males performed an incremental test to exhaustion, and in the following visits, four submaximal constant-load bouts (i.e., test and retest) were performed in the moderate-intensity domain (100 and 130 W) and heavy-intensity domain (160 and 190 W). The local tissue oxygen saturation index (SmO2) and pulmonary oxygen uptake (V̇O2) were measured continuously. The absolute SmO2 and V̇O2 values and the change (Δ) from the 3rd to 6th min of exercise were calculated. There was good reliability for SmO2 measurements, as indicated by the high intraclass correlation coefficient analysis (ICC ≥0.84 for all) and low coefficient of variation between the two trials (CV ≤4.1% for all). Steady-state responses were observed for SmO2 and V̇O2 from the 3rd to the 6th min in the two moderate-intensity bouts (P>0.05), whereas SmO2 decreased and V̇O2 increased from the 3rd to the 6th min in the two heavy-intensity bouts (P<0.05). Together, these findings suggested that the SmO2 measured with a wNIRS device is reliable and sensitive to track local metabolic changes provoked by slight increments in exercise intensity.
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Affiliation(s)
- J.S. Hasegawa
- Grupo de Estudos em Aptidão Aeróbia, Escola de Educação Física e Esporte, Universidade de São Paulo, São Paulo, SP, Brasil
| | - R.A. Azevedo
- Grupo de Estudos em Aptidão Aeróbia, Escola de Educação Física e Esporte, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A.C. Silveira
- Grupo de Estudos em Aptidão Aeróbia, Escola de Educação Física e Esporte, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A.E. Lima-Silva
- Grupo de Pesquisa em Desempenho Humano, Universidade Tecnológica Federal do Paraná, Curitiba, PR, Brasil
| | - R. Bertuzzi
- Grupo de Estudos em Aptidão Aeróbia, Escola de Educação Física e Esporte, Universidade de São Paulo, São Paulo, SP, Brasil
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13
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Clauss M, Burkhardt M, Wöber S, Skålhegg BS, Jensen J. Effect of five hours of mixed exercise on urinary nitrogen excretion in healthy moderate-to-well-trained young adults. Front Nutr 2024; 11:1345922. [PMID: 38450230 PMCID: PMC10914964 DOI: 10.3389/fnut.2024.1345922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/01/2024] [Indexed: 03/08/2024] Open
Abstract
Introduction Carbohydrates and fats are the primary energy substrates during exercise, but proteins can also contribute. When proteins are degraded in the body, the amino groups are mainly converted to urea and excreted. Therefore, nitrogen excretion has been used as a marker of protein degradation, but a clear conclusion has yet to be reached on the effect of exercise on nitrogen excretion. Thus, we tested whether exercise increases nitrogen excretion. Methods Fifteen young, healthy, moderate-to-well-trained participants (4 females, 11 males, VO2max 54.4 ± 1.7 mL·kg-1·min-1; mean ± SEM) participated in a randomized, balanced cross-over design investigation consisting of 1 day with 5 h of exercise (exercise day, EX) and 1 day with no exercise (control day, CON). The participants recorded their dietary intake the day before from 16:00 and throughout the intervention day. They then repeated these dietary intakes on the second trial day. A standardized lunch was provided on both days. In addition, participants were allowed to consume almost protein-free snacks in EX to ensure the same energy balance during both trial days. Urine was collected throughout the whole testing period, and urinary 3-methylhistidine (3-MH) excretion was measured to examine muscular catabolism. The sweat rate was calculated during the exercise period. Results and discussion The urinary nitrogen and 3-MH excretions did not differ significantly between EX and CON (p = 0.764 and p = 0.953). The sweat rate was 2.55 ± 0.25 L in EX and 0.14 ± 0.15 L in CON (p < 0.001), and by estimating sweat nitrogen excretion, total nitrogen excretion was shown to differ with exercise. Our results showed that 5 hours of mixed exercise did not significantly impact urinary nitrogen and 3-MH excretions in healthy moderate-to-well-trained young adults.
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Affiliation(s)
- Matthieu Clauss
- Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
| | - Meike Burkhardt
- Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
- Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany
| | - Sophie Wöber
- Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
- Department of Sport and Sport Science, University of Freiburg, Freiburg, Germany
| | - Bjørn Steen Skålhegg
- Department of Nutrition, Division for Molecular Nutrition, University of Oslo, Oslo, Norway
| | - Jørgen Jensen
- Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway
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14
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Peng T, Ding M, Yan H, Zhang P, Tian R, Guo Y, Zheng L. Endurance exercise upregulates mtp expression in aged Drosophila to ameliorate age-related diastolic dysfunction and extend lifespan. Physiol Rep 2024; 12:e15929. [PMID: 38307709 PMCID: PMC10837045 DOI: 10.14814/phy2.15929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/08/2024] [Accepted: 01/14/2024] [Indexed: 02/04/2024] Open
Abstract
Diastolic dysfunction is a major cardiac dysfunction, and an important predisposing factor is age. Although exercise training is often used for the prevention and treatment of cardiovascular disease nowadays, little is currently known about whether exercise interventions associated with the slowing of cardiac aging are related to mtp-related pathways. In the present study, the UAS/Tub-Gal4 system was used to knockdown whole-body mtp expression levels in Drosophila, which underwent 2 weeks of endurance training. By conducting different assays and quantifying different indicators, we sought to investigate the relationship between mtp, exercise, and age-related diastolic dysfunction. We found that (1) Drosophila in the mtpRNAi youth group exhibited age-related diastolic dysfunction and had a significantly shorter mean lifespan. (2) Endurance exercise could improve diastolic dysfunction and prolong lifespan in aged Drosophila. (3) Endurance exercise could increase the expression levels of apolpp and Acox3, and decrease the levels of TC, LDL-C, and TG in the aged group. In summary, aging causes age-associated diastolic dysfunction in Drosophila, and systemic knockdown of mtp causes premature age-associated diastolic dysfunction in young Drosophila. Besides, endurance exercise improves age-related diastolic dysfunction and prolongs lifespan.
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Affiliation(s)
- Tianhang Peng
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Meng Ding
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Hanhui Yan
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Ping Zhang
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Rui Tian
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Yin Guo
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Lan Zheng
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
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15
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Hyldahl RD, Gifford JR, Davidson LE, Hancock CR, Hafen PS, Parcell AC, Mack GW. Physiological assessment of a 16 day, 4385 km ultra-endurance mountain bike race: A case study. Exp Physiol 2024; 109:165-174. [PMID: 38189630 PMCID: PMC10988653 DOI: 10.1113/ep091260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 10/23/2023] [Indexed: 01/09/2024]
Abstract
The Tour Divide (TD) is a 4385 km ultra-endurance bicycle race that follows the continental divide from Canada to Mexico. In this case study, we performed a comprehensive molecular and physiological profile before and after the completion of the TD. Assessments were performed 35 days before the start (Pre-TD) and ∼36 h after the finish (Post-TD). Total energy expenditure was assessed during the first 9 days by doubly labelled water (2 H2 18 O), abdominal and leg tissue volumes via MRI, and graded exercise tests to quantify fitness and substrate preference. Vastus lateralis muscle biopsies were taken to measure mitochondrial function via respirometry, and vascular function was assessed using Doppler ultrasound. The 47-year-old male subject took 16 days 7 h 45 min to complete the route. He rode an average of 16.8 h/day. Neither maximal O2 uptake nor maximal power output changed pre- to post-TD. Measurement of total energy expenditure and dietary recall records suggested maintenance of energy balance, which was supported by the lack of change in body weight. The subject lost both appendicular and trunk fat mass and gained leg lean mass pre- to post-TD. Skeletal muscle mitochondrial and vascular endothelial function decreased pre- to post-TD. Overall, exercise performance was maintained despite reductions in muscle mitochondrial and vascular endothelial function post-TD, suggesting a metabolic reserve in our highly trained athlete.
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Affiliation(s)
| | | | | | - Chad R. Hancock
- Department of Nutrition, Dietetics & Food ScienceBrigham Young UniversityProvoUtahUSA
| | - Paul S. Hafen
- Department of Exercise SciencesBrigham Young UniversityProvoUtahUSA
| | - Allen C. Parcell
- Department of Exercise SciencesBrigham Young UniversityProvoUtahUSA
| | - Gary W. Mack
- Department of Exercise SciencesBrigham Young UniversityProvoUtahUSA
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16
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Christ T, Ringleb M, Haunhorst S, Fennen L, Jordan PM, Wagner H, Puta C. The acute effects of pre- and mid-exercise carbohydrate ingestion on the immunoregulatory stress hormone release in experienced endurance athletes-a systematic review. Front Sports Act Living 2024; 6:1264814. [PMID: 38362064 PMCID: PMC10868406 DOI: 10.3389/fspor.2024.1264814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 01/11/2024] [Indexed: 02/17/2024] Open
Abstract
Background In times of physical stress, the body orchestrates a multisystemic regulatory response. The hormones epinephrine and norepinephrine play a role in the immediate regulation chain, while cortisol is involved in delayed regulation. The release of those stress hormones in response to exercise has previously been reported to elicit diverse immune reactions. Objective The aim of this systematic review was to examine and present the acute effects of immediate pre- and mid-exercise carbohydrate ingestion on cortisol, epinephrine and norepinephrine levels in experienced endurance athletes. Methods A systematic literature search was conducted using PubMed, Cochrane Library and Web of Science in accordance with PRISMA guidelines up to February 2023. Randomized controlled trials in English or German language were included if baseline and at least two follow-up measures of blood plasma or serum of chosen stress hormones (cortisol, epinephrine, norepinephrine) were collected in response to prolonged continuous endurance activity. Eligibility furthermore required an acute carbohydrate ingestion of at least 30 g of carbohydrates per hour no more than 30 min before start of the exercise, as well as a placebo-controlled study design. Results Eleven studies of moderate to high quality were included in this review. Carbohydrate ingestion of at least 30 g per hour was able to attenuate rises in cortisol concentration in majority of the included studies. Epinephrine levels were considerably lower with ingestion of carbohydrates compared to placebo in all studies. Norepinephrine concentrations were largely unaffected by acute carbohydrate feeding. Conclusion Pre- and mid-exercise ingestion of carbohydrates seems an effective dietary strategy to attenuate rises in cortisol and epinephrine levels and, thus, an effective countermeasure for endurance exercise-induced increases in stress hormone levels.
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Affiliation(s)
- Tabea Christ
- Department of Movement Science, University of Münster, Münster, Germany
| | - Miriam Ringleb
- Department of Movement Science, University of Münster, Münster, Germany
- Department of Sports Medicine and Health Promotion, Friedrich Schiller University Jena, Jena, Germany
- NeuroPsycho Immunology Research Unit, Department for Molecular and Cellular Sports Medicine, Institute for Cardiovascular Research and Sports Medicine, German Sport University Cologne, Cologne, Germany
| | - Simon Haunhorst
- Department of Sports Medicine and Health Promotion, Friedrich Schiller University Jena, Jena, Germany
- Center for Interdisciplinary Prevention of Diseases Related to Professional Activities, Jena, Germany
| | - Lena Fennen
- Department of Movement Science, University of Münster, Münster, Germany
| | - Paul M. Jordan
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
| | - Heiko Wagner
- Department of Movement Science, University of Münster, Münster, Germany
| | - Christian Puta
- Department of Sports Medicine and Health Promotion, Friedrich Schiller University Jena, Jena, Germany
- Center for Interdisciplinary Prevention of Diseases Related to Professional Activities, Jena, Germany
- Center for Sepsis Control & Care (CSCC), Jena University Hospital/Friedrich Schiller University Jena, Jena, Germany
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Ubolsakka-Jones C, Jones DA, Pukdeechat M, Boonsawat W, Khrisanapant W, Phimphasak C. Effect of a Conical-PEP Mask on Exercise in Subjects With COPD. Respir Care 2024; 69:191-201. [PMID: 37816541 PMCID: PMC10898471 DOI: 10.4187/respcare.11016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
BACKGROUND Dynamic hyperinflation (DH) is a major pathophysiology of COPD that is directly related to dyspnea and exercise intolerance. Positive expiratory pressure (PEP) might reduce DH and dyspnea during exercise, but at present, there is insufficient evidence to conclude whether it is beneficial for DH, dyspnea, and exercise capacity in COPD. METHODS A randomized crossover trial with concealed allocation was conducted in 37 moderate to very severe subjects with COPD (34 males, age 66.6 ± 7.4 y, FEV1% of predicted 56.3 ± 13.7). The experimental condition was conical-PEP breathing with a PEP of around 5 cm H2O during a spot marching exercise at a constant speed, inducing 71 ± 9% age-predicted maximum heart rate to symptom limit or 25 min. The control condition was usual breathing. Exercise endurance time and end-exercise symptoms were recorded. Inspiratory capacity (IC) was measured pre-exercise and immediately post exercise. Cardiopulmonary function and breathlessness were monitored throughout the test and after 10 min of recovery. RESULTS There were no complications or adverse effects during exercise with a conical-PEP mask. Conical-PEP showed longer exercise times than control (median 11.0 [interquartile range 7.7-17.0] min vs 8 [6.0-11.5] min, respectively, P < .001). Most stopped exercising because of breathlessness and leg fatigue. At the end of exercise, IC and breathlessness showed non-significant differences between the conditions, but breathlessness was significantly lower in conical-PEP (median 4 [1.5-5.0] than control 5 [3-6] on Borg scale at isotime for control [8 min]). CONCLUSIONS Breathing with a 5 cm H2O conical-PEP mask improved exercise time (median 27.1% [0.6-52.9]) in subjects with COPD. The improvement in exercise with the conical-PEP mask was associated with slower development of breathlessness, possibly due to delays in DH development.
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Affiliation(s)
- Chulee Ubolsakka-Jones
- School of Physical Therapy, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - David A Jones
- Division of Health Science, School of Health Sciences, Manchester Metropolitan University, Manchester, United Kingdom; and Innovation to Improve Cardiopulmonary and Physical Performances Research Group, Khon Kaen University, Khon Kaen, Thailand
| | - Malipron Pukdeechat
- Faculty of Sport and Health Sciences, Thailand National Sports University Mahasarakham Campus, Mahasarakham, Thailand; and Innovation to Improve Cardiopulmonary and Physical Performances Research Group, Khon Kaen University, Khon Kaen, Thailand
| | - Watchara Boonsawat
- Department of Internal Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Wilaiwan Khrisanapant
- Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Chatchai Phimphasak
- School of Physical Therapy, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand; and Innovation to Improve Cardiopulmonary and Physical Performances Research Group, Khon Kaen University, Khon Kaen, Thailand.
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18
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Perrier J, Langeard A, Ouma CK, Sesboüé B, Clochon P, Prevost JN, Bertran F, Davenne D, Bessot N. Effects of acute bouts of evening resistance or endurance exercises on sleep EEG and salivary cortisol. Front Physiol 2024; 15:1313545. [PMID: 38322615 PMCID: PMC10844443 DOI: 10.3389/fphys.2024.1313545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 01/08/2024] [Indexed: 02/08/2024] Open
Abstract
Introduction: Deleterious effects of exercise close to bedtime could be due to increased physiological arousal that can be detected during sleep using sleep spectral analysis. Resistance and endurance exercises have different effects on cortisol release that may lead them to impact sleep spectral signatures differently. The present study aimed to investigate the effects of two types of evening exercise on sleep architecture, sleep spectral parameters and salivary cortisol. Methods: Young healthy participants came to our laboratory to undergo 3 counterbalanced pre-sleep conditions that started 1 h before bedtime (a resistance and an endurance exercise conditions of 30 min duration, identical in terms of workload; and a control condition) followed by polysomnographic recordings. Results were compared between the three conditions for 16 participants. Results: Sleep efficiency was lower after both endurance and resistance exercise than after the control condition. Total sleep time was lower after endurance exercise compared to the control condition. Sleep spectral analyses showed that both endurance and resistance exercises led to greater alpha power during N1 sleep stage and greater theta power during N2 sleep stage compared to the control condition. The endurance exercise led to greater beta power during N2 sleep stage, greater alpha power during REM sleep, and higher cortisol levels compared to the control condition (trend), and compared to the resistance exercise condition (significant). The resistance exercise led to lower beta power during N2 sleep stage than the control condition and lower cortisol levels than the endurance exercise condition. Discussion: This study underlines significant modifications of sleep quality and quantity after both moderate evening endurance and resistance exercises. Still, these effects cannot be considered as deleterious. In contrast to the resistance exercise, endurance exercise led to an increase in sleep EEG activity associated with hyperarousal during sleep and higher cortisol levels, suggesting an hyperarousal effect of endurance exercise performed in the evening. These results align with previous warning about the arousal effects of evening exercise but do not support the notion of deleterious effects on sleep. While these results provide support for the physiological effects of evening exercises on sleep, replication with larger sample size is needed.
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Affiliation(s)
- Joy Perrier
- Normandie University, UNICAEN, PSL Université, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France
- Normandie University, UNICAEN, INSERM, GIP Cyceron, UMR-S 1075—Mobilités: Vieillissement, Pathologie, Santé—Comete, Caen, France
| | - Antoine Langeard
- Normandie University, UNICAEN, INSERM, GIP Cyceron, UMR-S 1075—Mobilités: Vieillissement, Pathologie, Santé—Comete, Caen, France
| | - Chandrou Koumar Ouma
- Normandie University, UNICAEN, INSERM, GIP Cyceron, UMR-S 1075—Mobilités: Vieillissement, Pathologie, Santé—Comete, Caen, France
| | - Bruno Sesboüé
- Normandie University, UNICAEN, INSERM, GIP Cyceron, UMR-S 1075—Mobilités: Vieillissement, Pathologie, Santé—Comete, Caen, France
- Department of Clinical Physiology, CHU de Caen, Caen, France
| | - Patrice Clochon
- Normandie University, UNICAEN, PSL Université, EPHE, INSERM, U1077, CHU de Caen, GIP Cyceron, Neuropsychologie et Imagerie de la Mémoire Humaine, Caen, France
| | | | | | - Damien Davenne
- Normandie University, UNICAEN, INSERM, GIP Cyceron, UMR-S 1075—Mobilités: Vieillissement, Pathologie, Santé—Comete, Caen, France
| | - Nicolas Bessot
- Normandie University, UNICAEN, INSERM, GIP Cyceron, UMR-S 1075—Mobilités: Vieillissement, Pathologie, Santé—Comete, Caen, France
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Hong Y, Bao D, Manor B, Zhou Y, Zhou J. Effects of endurance exercise on physiologic complexity of the hemodynamics in prefrontal cortex. Neurophotonics 2024; 11:015009. [PMID: 38515930 PMCID: PMC10956706 DOI: 10.1117/1.nph.11.1.015009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/23/2024] [Accepted: 02/16/2024] [Indexed: 03/23/2024]
Abstract
Significance Prefrontal cortex (PFC) hemodynamics are regulated by numerous underlying neurophysiological components over multiple temporal scales. The pattern of output signals, such as functional near-infrared spectroscopy fluctuations (i.e., fNIRS), is thus complex. We demonstrate first-of-its-kind evidence that this fNIRS complexity is a marker that captures the influence of endurance capacity and the effects of hydrogen gas (H 2 ) on PFC regulation. Aim We aim to explore the effects of different physical loads of exercise as well as the intaking of hydrogen gas on the fNIRS complexity of the PFC. Approach Twenty-four healthy young men completed endurance cycling exercise from 0 (i.e., baseline) to 100% of their physical loads after intaking 20 min of either H 2 or placebo gas (i.e., control) on each of two separate visits. The fNIRS measuring the PFC hemodynamics and heart rate (HR) was continuously recorded throughout the exercise. The fNIRS complexity was quantified using multiscale entropy. Results The fNIRS complexity was significantly greater in the conditions from 25% to 100% of the physical load (p < 0.0005 ) compared with the baseline and after intaking H 2 before exercise; this increase of fNIRS complexity was significantly greater compared with the control (p = 0.001 ∼ 0.01 ). At the baseline, participants with a greater fNIRS complexity had a lower HR (β = - 0.35 ∼ - 0.33 , p = 0.008 ∼ 0.02 ). Those with a greater increase of complexity had a lower increase of the HR (β = - 0.30 ∼ - 0.28 , p = 0.001 ∼ 0.002 ) during exercise. Conclusions These observations suggest that fNIRS complexity would be a marker that captures the adaptive capacity of PFC to endurance exercise and to the effects of interventions on PFC hemodynamics.
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Affiliation(s)
- Yinglu Hong
- Beijing Sport University, School of Sport Medicine and Physical Therapy, Beijing, China
| | - Dapeng Bao
- Beijing Sport University, China Institute of Sport and Health Science, Beijing, China
| | - Brad Manor
- Hebrew Senior Life Hinda and Arthur Marcus Institute for Aging Research, Harvard Medical School, Boston, Massachusetts, United States
| | - Yuncong Zhou
- Beijing Sport University, School of Education, Beijing, China
| | - Junhong Zhou
- Hebrew Senior Life Hinda and Arthur Marcus Institute for Aging Research, Harvard Medical School, Boston, Massachusetts, United States
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20
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Nikolaidis PT, Knechtle B. Sedentarism in Recreational Marathon Runners. Open Access J Sports Med 2023; 14:103-109. [PMID: 38164226 PMCID: PMC10758157 DOI: 10.2147/oajsm.s444862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024] Open
Abstract
Aim Although it has been previously observed that sedentary behavior (SB) was not related to training duration in marathon runners, little information existed about the relationship of SB with training, anthropometric and physiological characteristics in this population. This study aimed to investigate the prevalence of SB and its correlation with performance parameters (such as body fat percentage, maximal oxygen uptake and weekly training volume) as well as its variation by sex and day (ie, weekdays versus weekend) in recreational marathon runners. Methods A total of 151 finishers (women, n = 29; men, n = 122; age 43.1 (8.7) years, mean (standard deviation)) in the Athens marathon 2017 performed a series of anthropometric and physiological tests, and completed the Multi-context sitting time questionnaire. Results SB did not correlate with anthropometric and physiological characteristics and no difference in these characteristics was shown between low and high sedentary participants (p > 0.05). SB did not differ between women and men (p > 0.05), but differed between working and non-working days (p < 0.05). Conclusion In contrast to previous findings on the general population indicating an association of a high SB with a low cardiorespiratory and muscular fitness, our finding of no correlation between SB and physical fitness in marathon runners suggested that endurance exercise might offset the negative effects of SB.
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Affiliation(s)
- Pantelis T Nikolaidis
- School of Health and Caring Sciences, University of West Attica, Egaleo, Greece
- Exercise Physiology Laboratory, Nikaia, Greece
| | - Beat Knechtle
- Institute of Primary Care, University of Zurich, Zurich, Switzerland
- Medbase St. Gallen am Vadianplatz, St. Gallen, Switzerland
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21
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Fahrenholtz IL, Melin AK, Garthe I, Wasserfurth P, Ivarsson A, Hollekim-Strand SM, Koehler K, Logue D, Madigan S, Gräfnings M, Torstveit MK. Short-term effects and long-term changes of FUEL-a digital sports nutrition intervention on REDs related symptoms in female athletes. Front Sports Act Living 2023; 5:1254210. [PMID: 38164441 PMCID: PMC10757931 DOI: 10.3389/fspor.2023.1254210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 11/24/2023] [Indexed: 01/03/2024] Open
Abstract
Female endurance athletes are at high risk for developing Relative Energy Deficiency in Sport (REDs), resulting in symptoms such as menstrual dysfunction and gastrointestinal (GI) problems. The primary aim of this study was to investigate effects of the FUEL (Food and nUtrition for Endurance athletes-a Learning program) intervention consisting of weekly online lectures combined with individual athlete-centered nutrition counseling every other week for sixteen weeks on REDs related symptoms in female endurance athletes at risk of low energy availability [Low Energy Availability in Females Questionnaire (LEAF-Q) score ≥8]. Female endurance athletes from Norway (n = 60), Sweden (n = 84), Ireland (n = 17), and Germany (n = 47) were recruited. Fifty athletes with risk of REDs (LEAF-Q score ≥8) and with low risk of eating disorders [Eating Disorder Examination Questionnaire (EDE-Q) global score <2.5], with no use of hormonal contraceptives and no chronic diseases, were allocated to either the FUEL intervention (n = 32) (FUEL) or a sixteen-week control period (n = 18) (CON). All but one completed FUEL and n = 15 completed CON. While no evidence for difference in change in LEAF-Q total or subscale scores between groups was detected post-intervention (BFincl < 1), the 6- and 12-months follow-up revealed strong evidence for improved LEAF-Q total (BFincl = 123) and menstrual score (BFincl = 840) and weak evidence for improved GI-score (BFincl = 2.3) among FUEL athletes. In addition, differences in change between groups was found for EDE-Q global score post-intervention (BFincl = 1.9). The reduction in EDE-Q score remained at 6- and 12- months follow-up among FUEL athletes. Therefore, the FUEL intervention may improve REDs related symptoms in female endurance athletes. Clinical Trial Registration www.clinicaltrials.gov (NCT04959565).
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Affiliation(s)
- Ida Lysdahl Fahrenholtz
- Department of Sport Science and Physical Education, University of Agder, Kristiansand, Norway
| | | | - Ina Garthe
- The Norwegian Olympic and Paralympic Committee and Confederation of Sport, Oslo, Norway
| | - Paulina Wasserfurth
- Department Health and Sport Sciences, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Andreas Ivarsson
- Department of Sport Science and Physical Education, University of Agder, Kristiansand, Norway
- School of Health and Welfare, Halmstad University, Halmstad, Sweden
| | - Siri Marte Hollekim-Strand
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Karsten Koehler
- Department Health and Sport Sciences, School of Medicine and Health, Technical University of Munich, Munich, Germany
| | - Danielle Logue
- Sport Ireland Institute, National Sports Campus, Dublin, Ireland
| | - Sharon Madigan
- Sport Ireland Institute, National Sports Campus, Dublin, Ireland
| | - Maria Gräfnings
- Department of Medical Science, Dalarna University, Falun, Sweden
| | - Monica K. Torstveit
- Department of Sport Science and Physical Education, University of Agder, Kristiansand, Norway
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22
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Harrington RN. Effects of branched chain amino acids, l-citrulline, and alpha-glycerylphosphorylcholine supplementation on exercise performance in trained cyclists: a randomized crossover trial. J Int Soc Sports Nutr 2023; 20:2214112. [PMID: 37229544 DOI: 10.1080/15502783.2023.2214112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/19/2023] [Indexed: 05/27/2023] Open
Abstract
BACKGROUND Nutrition plays a key role in training and athletic performance and dietary supplements can make a small, but potentially valuable, contribution to achieving peak athletic performance. This study is the first to investigate the effects of supplementation from the combination of BCAAs, L-citrulline, and A-GPC on exercise performance. METHODS In this randomized, double-blind, crossover study 30 male trained cyclists (age: 43.7 ± 8.5 years) completed a 20 km cycling time trial (TT) test and a high intensity endurance cycling (HIEC) test following a 7-day supplementation period with either a supplement containing 8 g BCAAs, 6 g L-citrulline, and 300 mg A-GPC or a placebo (15 g maltodextrin). For each trial, mean values for time to completion, peak and average power output, OMNI rating of perceived exertion, and visual analogue scale (VAS) responses on perceived exertion were computed for the 20 km TT test. Mean values for time to fatigue and VAS responses on perceived exertion were computed for the HIEC test. Procedures for dietary intake and exercise patterns were implemented to achieve consistency throughout the study period. RESULTS There was a significant increase (p = .003) in peak power in the 20 km TT (354.27 ± 87.88 and 321.67 ± 63.65, for supplement and placebo trials, respectively) and a significant increase (p = .001) in time to fatigue in the HIEC test (0:19:49 ± 0:11:13 min and 0:14:33 ± 0:09:59 min, for supplement and placebo trials, respectively) with the test supplement compared to the placebo. With the test supplement, there was an average increase in TT peak power of 11% and an average increase in time to fatigue of 36.2% in the HIEC test compared to the placebo. There was no significant improvement in time to completion, average power, OMNI rating of perceived exertion, or VAS responses on perceived exertion in the TT test and no significant improvement in VAS measures of perceived exertion in the HIEC test. CONCLUSIONS The combination of BCAAs, L-citrulline, and A-GPC used in this study improves cycling performance and may be useful for individuals seeking to improve athletic performance, particularly in disciplines requiring lower body muscular strength and endurance.
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Affiliation(s)
- Renee Nicole Harrington
- Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, USA
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23
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Nakamura S, Miyachi Y, Shinjo A, Yokomizo H, Takahashi M, Nakatani K, Izumi Y, Otsuka H, Sato N, Sakamoto R, Miyazawa T, Bamba T, Ogawa Y. Improved endurance capacity of diabetic mice during SGLT2 inhibition: Role of AICARP, an AMPK activator in the soleus. J Cachexia Sarcopenia Muscle 2023; 14:2866-2881. [PMID: 37941098 PMCID: PMC10751436 DOI: 10.1002/jcsm.13350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 08/02/2023] [Accepted: 09/11/2023] [Indexed: 11/10/2023] Open
Abstract
BACKGROUND Diabetes is associated with an increased risk of deleterious changes in muscle mass and function or sarcopenia, leading to physical inactivity and worsening glycaemic control. Given the negative energy balance during sodium-glucose cotransporter-2 (SGLT2) inhibition, whether SGLT2 inhibitors affect skeletal muscle mass and function is a matter of concern. However, how SGLT2 inhibition affects the skeletal muscle function in patients with diabetes remains insufficiently explored. We aimed to explore the effects of canagliflozin (CANA), an SGLT2 inhibitor, on skeletal muscles in genetically diabetic db/db mice focusing on the differential responses of oxidative and glycolytic muscles. METHODS Db/db mice were treated with CANA for 4 weeks. We measured running distance and handgrip strength to assess skeletal muscle function during CANA treatment. At the end of the experiment, we performed a targeted metabolome analysis of the skeletal muscles. RESULTS CANA treatment improved the reduced endurance capacity, as revealed by running distance in db/db mice (414.9 ± 52.8 vs. 88.7 ± 22.7 m, P < 0.05). Targeted metabolome analysis revealed that 5-aminoimidazole-4-carboxamide-1-β-D-ribofuranosyl 5'-monophosphate (AICARP), a naturally occurring AMP-activated protein kinase (AMPK) activator, increased in the oxidative soleus muscle (P < 0.05), but not in the glycolytic extensor digitorum longus muscle (P = 0.4376), with increased levels of AMPK phosphorylation (P < 0.01). CONCLUSIONS This study highlights the potential role of the AICARP/AMPK pathway in oxidative rather than glycolytic skeletal muscles during SGLT2 inhibition, providing novel insights into the mechanism by which SGLT2 inhibitors improve endurance capacity in patients with type 2 diabetes.
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Affiliation(s)
- Shintaro Nakamura
- Department of Medicine and Bioregulatory Science, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Yasutaka Miyachi
- Department of Medicine and Bioregulatory Science, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Akihito Shinjo
- Department of Medicine and Bioregulatory Science, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Hisashi Yokomizo
- Department of Medicine and Bioregulatory Science, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Masatomo Takahashi
- Division of Metabolomics/Mass Spectrometry Center, Medical Research Center for High Depth Omics, Medical Institute of BioregulationKyushu UniversityFukuokaJapan
| | - Kohta Nakatani
- Division of Metabolomics/Mass Spectrometry Center, Medical Research Center for High Depth Omics, Medical Institute of BioregulationKyushu UniversityFukuokaJapan
| | - Yoshihiro Izumi
- Division of Metabolomics/Mass Spectrometry Center, Medical Research Center for High Depth Omics, Medical Institute of BioregulationKyushu UniversityFukuokaJapan
| | - Hiroko Otsuka
- Department of Medicine and Bioregulatory Science, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Naoichi Sato
- Department of Medicine and Bioregulatory Science, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Ryuichi Sakamoto
- Department of Medicine and Bioregulatory Science, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Takashi Miyazawa
- Department of Medicine and Bioregulatory Science, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Takeshi Bamba
- Division of Metabolomics/Mass Spectrometry Center, Medical Research Center for High Depth Omics, Medical Institute of BioregulationKyushu UniversityFukuokaJapan
| | - Yoshihiro Ogawa
- Department of Medicine and Bioregulatory Science, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
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24
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Van Hooren B, Mennen B, Gronwald T, Bongers BC, Rogers B. Correlation properties of heart rate variability to assess the first ventilatory threshold and fatigue in runners. J Sports Sci 2023:1-10. [PMID: 37916488 DOI: 10.1080/02640414.2023.2277034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 10/22/2023] [Indexed: 11/03/2023]
Abstract
PURPOSE The short-term scaling exponent alpha1 of detrended fluctuation analysis (DFA-a1) of heart rate variability (HRV) has shown potential to delineate the first ventilatory threshold (VT1). The aims of this study were to investigate the accuracy of this method for VT1 determination in runners using a consumer grade chest belt and to explore the effects of acute fatigue. METHODS We compared oxygen uptake (V̇O2) and heart rate (HR) at gas exchange VT1 to V̇O2 and HR at a DFA-a1 value of 0.75. Gas exchange and HRV data were obtained from 14 individuals during a treadmill run involving two incremental ramps. Agreement was assessed using Bland-Altman analysis and linear regression. RESULTS Bland-Altman analysis between gas exchange and HRV V̇O2 and HR at VT1 during the first ramp showed a mean (95% limits of agreement) bias of -0.5 (-6.8 to 5.8) ml∙kg-1∙min-1, and -0.9 (-12.2 to 10.5) beats∙min-1, with R2 of 0.83 and 0.56, respectively. During the second ramp, the differences were -7.3 (-18.1 to 3.5) ml∙kg-1∙min-1 and -12.3 (-30.4 to 5.9) beats∙min-1, with R2 of 0.62 and 0.43, respectively. CONCLUSION A chest-belt derived DFA-a1 of 0.75 is closely related to gas exchange VT1, with the variability in accuracy at an individual level being similar to gas exchange methods. This suggests this to be a useful method for exercise intensity demarcation. The altered relationship during the second ramp indicates that DFA-a1 is only able to accurately demarcate exercise intensity thresholds in a non-fatigued state, but also opens opportunities for fatigue-based training prescription.
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Affiliation(s)
- Bas Van Hooren
- Department of Nutrition and Movement Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
| | - Bram Mennen
- Department of Nutrition and Movement Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
| | - Thomas Gronwald
- MSH Medical School Hamburg, Institute of Interdisciplinary Exercise Science and Sports Medicine, Hamburg, Germany
| | - Bart C Bongers
- Department of Nutrition and Movement Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
- Department of Surgery, School of Nutrition and Translational Research in Metabolism (NUTRIM), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
| | - Bruce Rogers
- College of Medicine, University of Central Florida, Orlando, Florida, USA
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25
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Yue Y, Yue Y, Fan Z, Meng Y, Wen C, An Y, Yao Y, Li X. The long noncoding RNA lnc-H19 is important for endurance exercise by maintaining slow muscle fiber types. J Biol Chem 2023; 299:105281. [PMID: 37742921 PMCID: PMC10598739 DOI: 10.1016/j.jbc.2023.105281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/28/2023] [Accepted: 09/13/2023] [Indexed: 09/26/2023] Open
Abstract
Skeletal muscle consists of different muscle fiber types whose heterogeneity is characterized by different metabolic patterns and expression of MyHC isomers. The transformation of muscle fiber types is regulated by a complex molecular network in which long noncoding (lnc) RNAs play an important role. In this study, we found that lnc-H19 is more enriched in slow muscle fibers. In vitro, interference of lnc-H19 by siRNA significantly promoted the expression of fast muscle fiber gene MyHC IIB and inhibited the expression of the slow muscle fiber gene MyHC I, thereby leading to a fast muscle fiber phenotype. In addition, interference of lnc-H19 significantly inhibited mRNA expression of the mitochondrial genes, such as COX5A, COX-2, UQCRFSL, FABP3, and CD36. Overexpression of lnc-H19 resulted in an opposite result. In vivo, knockdown of lnc-H19 by AAV-shRNA-H19 suppressed the mRNA expression of the slow muscle fiber gene MyHC I and the protein expression of slow-MyHC. Simultaneously, mitochondria were reduced in number, swollen, and vacuolated. The activities of succinate dehydrogenase, lactic dehydrogenase, and superoxide dismutase were significantly inhibited, and malondialdehyde content was significantly increased, indicating that deficiency of lnc-H19 leads to decreased oxidative metabolism and antioxidant capacity in muscle. Furthermore, inhibition of lnc-H19 decreased the weight-bearing swimming time and limb suspension time of mice. In conclusion, our results revealed the role of lnc-H19 in maintaining slow muscle fiber types and maintaining exercise endurance, which may help to further improve the regulatory network of lnc-H19 in muscle function.
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Affiliation(s)
- Yongqi Yue
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Shaanxi, China
| | - Yanru Yue
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Shaanxi, China
| | - Zeyu Fan
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Shaanxi, China
| | - Yingying Meng
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Shaanxi, China
| | - Chenglong Wen
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Shaanxi, China
| | - Yalong An
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Shaanxi, China
| | - Ying Yao
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Shaanxi, China
| | - Xiao Li
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Shaanxi, China; Key Laboratory of Livestock Biology, Northwest A&F University, Shaanxi, China.
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26
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Wang JF, Wen DT, Wang SJ, Gao YH, Yin XY. Muscle-specific overexpression of Atg2 gene and endurance exercise delay age-related deteriorations of skeletal muscle and heart function via activating the AMPK/Sirt1/PGC-1α pathway in male Drosophila. FASEB J 2023; 37:e23214. [PMID: 37773768 DOI: 10.1096/fj.202301312r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/29/2023] [Accepted: 09/08/2023] [Indexed: 10/01/2023]
Abstract
Atg2 is a key gene in autophagy formation and plays an important role in regulating aging progress. Exercise is an important tool to resist oxidative stress in cells and delay muscle aging. However, the relationship between exercise and the muscle Atg2 gene in regulating skeletal muscle aging remains unclear. Here, overexpression or knockdown of muscle Atg2 gene was achieved by constructing the AtgUAS/MhcGal4 system in Drosophila, and these flies were also subjected to an exercise intervention for 2 weeks. The results showed that both overexpression of Atg2 and exercise significantly increased the climbing speed, climbing endurance, cardiac function, and lifespan of aging flies. They also significantly up-regulated the expression of muscle Atg2, AMPK, Sirt1, and PGC-1α genes, and they significantly reduced muscle malondialdehyde and triglyceride. These positive benefits were even more pronounced when the two were combined. However, the effects of Atg2 knockdown on skeletal muscle, heart, and lifespan were reversed compared to its overexpression. Importantly, exercise ameliorated age-related changes induced by Atg2 knockdown. Therefore, current results confirmed that both overexpression of muscle Atg2 and exercise delayed age-related deteriorations of skeletal muscle, the heart function, and lifespan, and exercise could also reverse age-related changes induced by Atg2 knockdown. The molecular mechanism is related to the overexpression of the Atg2 gene and exercise, which increase the activity of the AMPK/Sirt1/PGC-1α pathway, oxidation and antioxidant balance, and lipid metabolism in aging muscle.
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Affiliation(s)
- Jing-Feng Wang
- School of Physical Education, Ludong University, Yantai, P.R. China
| | - Deng-Tai Wen
- School of Physical Education, Ludong University, Yantai, P.R. China
| | - Shi-Jie Wang
- School of Physical Education, Ludong University, Yantai, P.R. China
| | - Ying-Hui Gao
- School of Physical Education, Ludong University, Yantai, P.R. China
| | - Xin-Yuan Yin
- School of Physical Education, Ludong University, Yantai, P.R. China
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27
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Shirai T, Uemichi K, Takemasa T. Effects of the order of endurance and high-intensity interval exercise in combined training on mouse skeletal muscle metabolism. Am J Physiol Regul Integr Comp Physiol 2023; 325:R593-R603. [PMID: 37746708 DOI: 10.1152/ajpregu.00077.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 09/26/2023]
Abstract
Endurance exercise (EE) mainly improves oxidative capacity, whereas high-intensity interval exercise (HIIE) also improves glycolytic capacity. There is growing evidence that suggests that combining EE with HIIE can lead to improved athletic performance and fitness outcomes compared with either form of exercise alone. This study aimed to elucidate whether the order in which EE and HIIE are performed in combined training affects oxidative metabolism and glycolysis in mouse skeletal muscle. Male ICR mice at 7 wk of age were divided into three groups: control (CON), EE-HIIE, and HIIE-EE. The total training period was 3 wk (3 times/week). Mice performed running on a treadmill as endurance exercise and swimming with a weight load of 10% of body weight as high-intensity interval exercise. EE before HIIE (EE-HIIE) improved running performance in the maximal EE capacity test (all-out test) and partly enhanced the expression levels of molecular signals involved in glycolysis compared with HIIE before EE (HIIE-EE). The order of exercise did not, however, impact the expression of proteins related to mitochondrial dynamics, including those involved in the morphological changes of mitochondria through repeated fusion and fission, as well as oxidative energy metabolism. The findings suggest that the order of exercise has no significant impact on the expression of proteins associated with glycolytic and oxidative energy metabolism. Nevertheless, our results indicate that the order of EE-HIIE may enhance running performance.
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Affiliation(s)
- Takanaga Shirai
- Institute of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Japan Society for Promotion Science, Chiyoda-ku, Tokyo, Japan
| | - Kazuki Uemichi
- Institute of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Japan Society for Promotion Science, Chiyoda-ku, Tokyo, Japan
| | - Tohru Takemasa
- Institute of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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28
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Romero-Arenas S, Quero-Calero CD, Abellan-Aynes O, Andreu-Caravaca L, Fernandez-Calero M, Manonelles P, Lopez-Plaza D. Assessment of Intercostal Muscle Near-Infrared Spectroscopy for Estimating Respiratory Compensation Point in Trained Endurance Athletes. Sports (Basel) 2023; 11:212. [PMID: 37999429 PMCID: PMC10675049 DOI: 10.3390/sports11110212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/16/2023] [Accepted: 10/30/2023] [Indexed: 11/25/2023] Open
Abstract
This study aimed to assess the reliability and validity of estimating the respiratory compensation point (RCP) in trained endurance athletes by analyzing intercostal muscles' NIRS-derived tissue oxygenation dynamics. Seventeen experienced trail runners underwent an incremental treadmill protocol on two separate occasions, with a 7-day gap between assessments. Gas exchange and muscle oxygenation data were collected, and the oxygen saturation breakpoint (SmO2BP) measured in the intercostal muscles was compared to the RCP, which was identified by the increase in the VE/V.CO2 slope and the point at which the PetCO2 started to decrease. No statistically significant differences were observed between the two methods for any of the variables analyzed. Bland-Altman analysis showed significant agreement between the NIRS and gas analyzer methods for speed (r = 0.96, p < 0.05), HR (r = 0.98, p < 0.05), V.O2 relative to body mass (r = 0.99, p < 0.05), and %SmO2 (r = 0.98, p < 0.05). The interclass correlation coefficient values showed moderate to good reliability (0.60 to 0.86), and test-retest analysis revealed mean differences within the confidence intervals for all variables. These findings suggest that the SmO2BP measured using a portable NIRS device in the intercostal muscles is a reliable and valid tool for estimating the RCP for experienced trail runners and might be useful for coaches and athletes to monitor endurance training.
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Affiliation(s)
- Salvador Romero-Arenas
- Facultad de Deporte, UCAM, Universidad Católica de Murcia, 30107 Murcia, Spain; (S.R.-A.); (C.D.Q.-C.); (L.A.-C.)
| | - Carmen Daniela Quero-Calero
- Facultad de Deporte, UCAM, Universidad Católica de Murcia, 30107 Murcia, Spain; (S.R.-A.); (C.D.Q.-C.); (L.A.-C.)
- International Chair of Sport Medicine, UCAM, Universidad Católica de Murcia, 30107 Murcia, Spain; (M.F.-C.); (P.M.); (D.L.-P.)
| | - Oriol Abellan-Aynes
- Facultad de Deporte, UCAM, Universidad Católica de Murcia, 30107 Murcia, Spain; (S.R.-A.); (C.D.Q.-C.); (L.A.-C.)
- International Chair of Sport Medicine, UCAM, Universidad Católica de Murcia, 30107 Murcia, Spain; (M.F.-C.); (P.M.); (D.L.-P.)
| | - Luis Andreu-Caravaca
- Facultad de Deporte, UCAM, Universidad Católica de Murcia, 30107 Murcia, Spain; (S.R.-A.); (C.D.Q.-C.); (L.A.-C.)
- Sports Physiology Department, Faculty of Heatlh Sciences, Catholic Univeristy of Murcia, 30107 Murcia, Spain
| | - Marta Fernandez-Calero
- International Chair of Sport Medicine, UCAM, Universidad Católica de Murcia, 30107 Murcia, Spain; (M.F.-C.); (P.M.); (D.L.-P.)
- Faculty of Physiotherapy, Podiatry and Occupational Therapy, UCAM Universidad Católica de Murcia, 30107 Murcia, Spain
| | - Pedro Manonelles
- International Chair of Sport Medicine, UCAM, Universidad Católica de Murcia, 30107 Murcia, Spain; (M.F.-C.); (P.M.); (D.L.-P.)
| | - Daniel Lopez-Plaza
- International Chair of Sport Medicine, UCAM, Universidad Católica de Murcia, 30107 Murcia, Spain; (M.F.-C.); (P.M.); (D.L.-P.)
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Safdar M, Wessells RJ. Octopamine Rescues Endurance and Climbing Speed in Drosophila Clkout Mutants with Circadian Rhythm Disruption. Cells 2023; 12:2515. [PMID: 37947593 PMCID: PMC10648926 DOI: 10.3390/cells12212515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 11/12/2023] Open
Abstract
Circadian rhythm disturbances are associated with various negative health outcomes, including an increasing incidence of chronic diseases with high societal costs. While exercise can protect against the negative effects of rhythm disruption, it is not available to all those impacted by sleep disruptions, in part because sleep disruption itself reduces exercise capacity. Thus, there is a need for therapeutics that bring the benefits of exercise to this population. Here, we investigate the relationship between exercise and circadian disturbances using a well-established Drosophila model of circadian rhythm loss, the Clkout mutant. We find that Clkout causes reduced exercise capacity, measured as post-training endurance, flight performance, and climbing speed, and these phenotypes are not rescued by chronic exercise training. However, exogenous administration of a molecule known to mediate the effects of chronic exercise, octopamine (OA), was able to effectively rescue mutant exercise performance, including the upregulation of other known exercise-mediating transcripts, without restoring the circadian rhythms of mutants. This work points the way toward the discovery of novel therapeutics that can restore exercise capacity in patients with rhythm disruption.
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Affiliation(s)
| | - Robert J. Wessells
- Department of Physiology, School of Medicine, Wayne State University, Detroit, MI 48201, USA;
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Kelly MR, Emerson DM, McDermott BP, Atkins WC, Butts CL, Laursen RM, Troyanos C, Duckett A, Siedlik J. Gastrointestinal cell injury and perceived symptoms after running the Boston Marathon. Front Physiol 2023; 14:1268306. [PMID: 37908334 PMCID: PMC10615131 DOI: 10.3389/fphys.2023.1268306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/22/2023] [Indexed: 11/02/2023] Open
Abstract
Gastrointestinal (GI) disturbances are a prevalent cause of marathon related complaints, and in extreme cases can promote life-threatening conditions such as exertional heat stroke. Our aim was to study intestinal cell injury [via intestinal fatty acid binding protein (I-FABP)] and perceived GI distress symptoms among marathon runners. We also examined potential risk factors (e.g., inadequate sleep) that could exacerbate GI disturbances in healthy, trained endurance runners. This was a parallel mixed-methods study design. 2019 Boston Marathon participants were recruited via email and subjects completed surveys before the race describing demographics and training history. Participants completed a GI questionnaire to assess presence and severity of symptoms, a survey regarding risk factors (e.g., recent illness, medications) that could promote GI disturbances, and provided a urine sample at three time points (immediately pre-race, post-race, and 24-h post-race). Due to weather, blood samples were only collected immediately and 24-h post-race. A total of 40 runners (males: n = 19, age = 44.9 ± 10.8 years; females: n = 21, age = 44.8 ± 10.6 years) completed this study. I-FABP significantly decreased from post-race (3367.5 ± 2633.5 pg/mL) to 24-h post-race (1657.3 ± 950.7 pg/mL, t (39) = -4.228, p < .001, d = -.669). There was a significant difference in overall GI symptom scores across the three time points (F (2, 39) = 41.37, p < .001). The highest average score occurred post-race (.84 ± .68), compared to pre-race (.09 ± .12) and 24-h post-race (.44 ± .28). Post-race I-FABP (r = .31, p = .048) and post-race urine specific gravity (r = .33, p = .041) were significantly correlated with post-race GI symptom scores. Our study provides further support to the individualized nature of GI disturbances, with participants experiencing a wide range of risk factors that can influence the extent of GI damage and perceived symptoms during and after exercise.
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Affiliation(s)
- Melani R. Kelly
- Department of Health, Sport, and Exercise Sciences, University of Kansas, Lawrence, KS, United States
- Department of Exercise Science and Outdoor Recreation, Utah Valley University, Orem, UT, United States
| | - Dawn M. Emerson
- Department of Health, Sport, and Exercise Sciences, University of Kansas, Lawrence, KS, United States
- Department of Exercise Science, University of South Carolina, Columbia, SC, United States
| | - Brendon P. McDermott
- Department of Health, Human Performance and Recreation, University of Arkansas, Fayetteville, AR, United States
| | - Whitley C. Atkins
- Department of Health, Human Performance and Recreation, University of Arkansas, Fayetteville, AR, United States
| | - Cory L. Butts
- Department of Exercise and Nutrition Sciences, Weber State University, Ogden, UT, United States
| | - R. Mark Laursen
- Sargent College of Health and Rehabilitation Sciences, Boston University, Boston, MA, United States
| | | | - Andrew Duckett
- Department of Athletics, Boston University, Boston, MA, United States
| | - Jacob Siedlik
- Department of Exercise Science and Pre-Health Professions, Creighton University, Omaha, NE, United States
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Margolis LM, Pasiakos SM, Howard EE. High-fat ketogenic diets and ketone monoester supplements differentially affect substrate metabolism during aerobic exercise. Am J Physiol Cell Physiol 2023; 325:C1144-C1153. [PMID: 37721006 PMCID: PMC10635661 DOI: 10.1152/ajpcell.00359.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/07/2023] [Accepted: 09/07/2023] [Indexed: 09/19/2023]
Abstract
Chronically adhering to high-fat ketogenic diets or consuming ketone monoester supplements elicits ketosis. Resulting changes in substrate metabolism appear to be drastically different between ketogenic diets and ketone supplements. Consuming a ketogenic diet increases fatty acid oxidation with concomitant decreases in endogenous carbohydrate oxidation. Increased fat oxidation eventually results in an accumulation of circulating ketone bodies, which are metabolites of fatty acids that serve as an alternative source of fuel. Conversely, consuming ketone monoester supplements rapidly increases circulating ketone body concentrations that typically exceed those achieved by adhering to ketogenic diets. Rapid increases in ketone body concentrations with ketone monoester supplementation elicit a negative feedback inhibition that reduces fatty acid mobilization during aerobic exercise. Supplement-derived ketosis appears to have minimal impact on sparing of muscle glycogen or minimizing of carbohydrate oxidation during aerobic exercise. This review will discuss the substrate metabolic and associated aerobic performance responses to ketogenic diets and ketone supplements.
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Affiliation(s)
- Lee M Margolis
- Military Nutrition Division, US Army Research Institute of Environmental Medicine, Natick, Massachusetts, United States
| | - Stefan M Pasiakos
- Office of Dietary Supplements, U.S. Department of Health and Human Services, National Institutes of Health, Bethesda, Maryland, United States
| | - Emily E Howard
- Military Nutrition Division, US Army Research Institute of Environmental Medicine, Natick, Massachusetts, United States
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Grosicki GJ, Pugh J, Wosinska L, Quilter K, Mattimoe D, Allen J, Joyce SA, O'Sullivan O, Close GL. Ultra-Endurance triathlon competition shifts fecal metabolome independent of changes to microbiome composition. J Appl Physiol (1985) 2023; 135:549-558. [PMID: 37391884 DOI: 10.1152/japplphysiol.00024.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 05/22/2023] [Accepted: 06/19/2023] [Indexed: 07/02/2023] Open
Abstract
Understanding changes to gut microbiota composition and metabolic output in response to acute exercise may be necessary for understanding the mechanisms mediating the long-term health and performance benefits of exercise. Our primary objective was to characterize acute changes in the fecal microbiome and metabolome following participation in an ultra-endurance (3.9 km swim, 180.2 km bike, 42.2 km run) triathlon. An exploratory aim was to determine associations between athlete-specific factors [race performance (i.e., completion time) and lifetime years of endurance training] with pre-race gut microbiota and metabolite profiles. Stool samples from 12 triathletes (9 males/3 females; 43 ± 14 yr, 23 ± 2 kg/m2) were collected ≤48 h before and the first bowel movement following race completion. Intra- and inter-individual diversity of bacterial species and individual bacterial taxa were unaltered following race completion (P > 0.05). However, significant reductions (P < 0.05) in free and secondary bile acids [deoxycholic acid (DCA), 12-keto-lithocholic acid (12-ketoLCA)] and short-chain fatty acids (butyric and pivalic acids), and significant increases (P < 0.05) in long-chain fatty acids (oleic and palmitoleic acids) were observed. Exploratory analyses revealed several associations between pre-race bacterial taxa and fecal metabolites with race performance and lifetime history of endurance training (P < 0.05). These findings suggest that 1) acute ultra-endurance exercise shifts microbial metabolism independent of changes to community composition and 2) athlete performance level and training history relate to resting-state gut microbial ecology.NEW & NOTEWORTHY This is the first study to characterize acute changes in gut microbial ecology and metabolism following an ultra-endurance triathlon. We demonstrate changes in gut microbial community function, but not structure, as well as several associations between gut microbiome and fecal metabolome characteristics with race completion time and lifetime history of endurance training. These data add to a small but growing body of literature seeking to characterize the acute and chronic effects of exercise on the gut microbial ecosystem.
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Affiliation(s)
- Gregory J Grosicki
- Biodynamics and Human Performance Center, Georgia Southern University - Armstrong Campus, Savannah, Georgia, United States
| | - Jamie Pugh
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - Laura Wosinska
- Teagasc Food Research Centre, Moorepark, Fermoy, Ireland
| | - Karina Quilter
- School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Darragh Mattimoe
- School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Jacob Allen
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Champaign, Illinois, United States
| | - Susan A Joyce
- School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Orla O'Sullivan
- Teagasc Food Research Centre, Moorepark, Fermoy, Ireland
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- VistaMilk SFI Research Centre, Fermoy, Ireland
| | - Graeme L Close
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
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Flockhart M, Tischer D, Nilsson LC, Blackwood SJ, Ekblom B, Katz A, Apró W, Larsen FJ. Reduced glucose tolerance and insulin sensitivity after prolonged exercise in endurance athletes. Acta Physiol (Oxf) 2023; 238:e13972. [PMID: 37017615 DOI: 10.1111/apha.13972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/30/2023] [Accepted: 03/31/2023] [Indexed: 04/06/2023]
Abstract
AIM The purpose of this study was to 1. investigate if glucose tolerance is affected after one acute bout of different types of exercise; 2. assess if potential differences between two exercise paradigms are related to changes in mitochondrial function; and 3. determine if endurance athletes differ from nonendurance-trained controls in their metabolic responses to the exercise paradigms. METHODS Nine endurance athletes (END) and eight healthy nonendurance-trained controls (CON) were studied. Oral glucose tolerance tests (OGTT) and mitochondrial function were assessed on three occasions: in the morning, 14 h after an overnight fast without prior exercise (RE), as well as after 3 h of prolonged continuous exercise at 65% of VO2 max (PE) or 5 × 4 min at ~95% of VO2 max (HIIT) on a cycle ergometer. RESULTS Glucose tolerance was markedly reduced in END after PE compared with RE. END also exhibited elevated fasting serum FFA and ketones levels, reduced insulin sensitivity and glucose oxidation, and increased fat oxidation during the OGTT. CON showed insignificant changes in glucose tolerance and the aforementioned measurements compared with RE. HIIT did not alter glucose tolerance in either group. Neither PE nor HIIT affected mitochondrial function in either group. END also exhibited increased activity of 3-hydroxyacyl-CoA dehydrogenase activity in muscle extracts vs. CON. CONCLUSION Prolonged exercise reduces glucose tolerance and increases insulin resistance in endurance athletes the following day. These findings are associated with an increased lipid load, a high capacity to oxidize lipids, and increased fat oxidation.
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Affiliation(s)
- Mikael Flockhart
- Department of Physiology, Nutrition and Biomechanics, The Swedish School of Sport and Health Sciences, GIH, Stockholm, Sweden
| | - Dominik Tischer
- Department of Physiology, Nutrition and Biomechanics, The Swedish School of Sport and Health Sciences, GIH, Stockholm, Sweden
| | - Lina C Nilsson
- Department of Physiology, Nutrition and Biomechanics, The Swedish School of Sport and Health Sciences, GIH, Stockholm, Sweden
| | - Sarah J Blackwood
- Department of Physiology, Nutrition and Biomechanics, The Swedish School of Sport and Health Sciences, GIH, Stockholm, Sweden
| | - Björn Ekblom
- Department of Physiology, Nutrition and Biomechanics, The Swedish School of Sport and Health Sciences, GIH, Stockholm, Sweden
| | - Abram Katz
- Department of Physiology, Nutrition and Biomechanics, The Swedish School of Sport and Health Sciences, GIH, Stockholm, Sweden
| | - William Apró
- Department of Physiology, Nutrition and Biomechanics, The Swedish School of Sport and Health Sciences, GIH, Stockholm, Sweden
- Department of Clinical Sciences, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Filip J Larsen
- Department of Physiology, Nutrition and Biomechanics, The Swedish School of Sport and Health Sciences, GIH, Stockholm, Sweden
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Fleitas‐Paniagua PR, de Almeida Azevedo R, Trpcic M, Murias JM, Rogers B. Effect of ramp slope on intensity thresholds based on correlation properties of heart rate variability during cycling. Physiol Rep 2023; 11:e15782. [PMID: 37549966 PMCID: PMC10406567 DOI: 10.14814/phy2.15782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 08/09/2023] Open
Abstract
An index of heart rate variability (HRV), detrended fluctuation analysis (DFA a1) has gathered interest as a surrogate marker of exercise intensity boundaries. The aim of this report was to examine heart rate variability threshold (HRVT) behavior across different ramp incremental (RI) slopes. Seventeen participants completed a series of three RI (15, 30, and 45 W · min-1 slopes) with monitoring of gas exchange parameters, heart rate (HR) and HRV. HRVT1 was defined as the V̇O2 or HR at which DFA a1 reached 0.75 and the HRVT2 at which these values reached 0.5. HRVTs were compared by Pearson's r, Bland-Altman analysis, ICC3,1 , ANOVA, and paired t-testing. An excellent degree of reliability was seen across all three ramps, with an ICC3,1 of 0.93 and 0.88 for the HRVT1 V̇O2 and HR, respectively, and 0.90 and 0.92 for the HRVT2 V̇O2 and HR, respectively. Correlations between HRVT1/2 of the individual ramps were high with r values 0.84-0.95 for both HR and V̇O2 . Bland-Altman differences ranged between -1.4 and 1.2 mL · kg-1 · min-1 and -2 and +2 bpm. Paired t-testing showed no mean differences between any HRVT1/2 ramp comparisons. Cycling ramp slope does not appear to affect either HRVT1 or HRVT2 in terms of HR or V̇O2 .
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Affiliation(s)
| | - Rafael de Almeida Azevedo
- Applied Physiology and Nutrition Research Group ‐ Center of Lifestyle Medicine, Faculdade de Medicina FMUSPUniversidade de São PauloSão PauloBrazil
| | | | - Juan M. Murias
- Faculty of KinesiologyUniversity of CalgaryCalgaryCanada
- College of Health and Life SciencesHamad Bin Khalifa UniversityDohaQatar
| | - Bruce Rogers
- College of MedicineUniversity of Central FloridaOrlandoFloridaUSA
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Luo X, Zhang H, Cao X, Yang D, Yan Y, Lu J, Wang X, Wang H. Endurance Exercise-Induced Fgf21 Promotes Skeletal Muscle Fiber Conversion through TGF-β1 and p38 MAPK Signaling Pathway. Int J Mol Sci 2023; 24:11401. [PMID: 37511159 PMCID: PMC10379449 DOI: 10.3390/ijms241411401] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Fgf21 has been identified as playing a regulatory role in muscle growth and function. Although the mechanisms through which endurance training regulates skeletal muscle have been widely studied, the contribution of Fgf21 remains poorly understood. Here, muscle size and function were measured, and markers of fiber type were evaluated using immunohistochemistry, immunoblots, or qPCR in endurance-exercise-trained wild-type and Fgf21 KO mice. We also investigated Fgf21-induced fiber conversion in C2C12 cells, which were incubated with lentivirus and/or pathway inhibitors. We found that endurance exercise training enhanced the Fgf21 levels of liver and GAS muscle and exercise capacity and decreased the distribution of skeletal muscle fiber size, and fast-twitch fibers were observed converting to slow-twitch fibers in the GAS muscle of mice. Fgf21 promoted the markers of fiber-type transition and eMyHC-positive myotubes by inhibiting the TGF-β1 signaling axis and activating the p38 MAPK signaling pathway without apparent crosstalk. Our findings suggest that the transformation and function of skeletal muscle fiber types in response to endurance training could be mediated by Fgf21 and its downstream signaling pathways. Our results illuminate the mechanisms of Fgf21 in endurance-exercise-induced fiber-type conversion and suggest a potential use of Fgf21 in improving muscle health and combating fatigue.
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Affiliation(s)
- Xiaomao Luo
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Huiling Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Xiaorui Cao
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Ding Yang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Yi Yan
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Jiayin Lu
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Xiaonan Wang
- Renal Division, Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Haidong Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
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Bloomfield SA, Swift SN, Metzger CE, Baek K, De Souza MJ, Lenfest S, Shirazi-Fard Y, Hogan HA. Exercise training modifies the bone and endocrine response to graded reductions in energy availability in skeletally mature female rodents. Front Endocrinol (Lausanne) 2023; 14:1141906. [PMID: 37455901 PMCID: PMC10338226 DOI: 10.3389/fendo.2023.1141906] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 05/23/2023] [Indexed: 07/18/2023] Open
Abstract
Introduction Reductions in energy availability leading to weight loss can induce loss of bone and impact important endocrine regulators of bone integrity. We sought to elucidate whether endurance exercise (EX) can mitigate bone loss observed in sedentary (SED) skeletally mature rodents subjected to graded energy deficits. Methods Female virgin rats (n=84, 5-mo-old; 12/group) were randomized to baseline controls and either sedentary (SED) or exercise (EX) conditions, and within each exercise status to adlib-fed (ADLIB), or moderate (MOD) or severe (SEV) energy restriction diets for 12 weeks. Rats assigned to EX groups performed treadmill running to increase weekly energy expenditure by 10%. MOD-ER-SED, SEV-ER-SED, MOD-ER-EX and SEV-ER-EX were fed modified AIN93M diets with 20%, 40% 10%, and 30% less energy content, respectively, with 100% of all other nutrients provided. Results Energy availability (EA) was effectively reduced by ~14% and ~30% in the MOD-ER and SEV-ER groups, respectively. MOD-ER for 12 weeks resulted in few negative impacts on bone and, except for serum leptin in MOD-ER-SED rats, no significant changes in endocrine factors. By contrast, SEV-ER in SED rats resulted in significantly lower total body and femoral neck bone mass, and reduced serum estradiol, IGF-1 and leptin. EX rats experiencing the same reduction in energy availability as SEV-ER-SED exhibited higher total body mass, lean mass, total BMC, and higher serum IGF-1 at the end of 12 weeks. Bone mechanical properties at 3 bone sites (mid-femur, distal femur, femoral neck) were minimally impacted by ER but positively affected by EX. Discussion These findings indicate that combining increased EX energy expenditure with smaller reductions in energy intake to achieve a targeted reduction in EA provides some protection against loss of bone mass and lean mass in skeletally mature female rats, likely due to better preservation of circulating IGF-1, and that bone mechanical integrity is not significantly degraded with either moderate or severe reduced EA.
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Affiliation(s)
- Susan A. Bloomfield
- Bone Biology Laboratory, Department of Kinesiology & Sport Management, Texas A&M University, College Station, TX, United States
- Bone Biology Laboratory, Department of Nutrition, Texas A&M University, College Station, TX, United States
| | - Sibyl N. Swift
- Bone Biology Laboratory, Department of Nutrition, Texas A&M University, College Station, TX, United States
| | - Corinne E. Metzger
- Bone Biology Laboratory, Department of Kinesiology & Sport Management, Texas A&M University, College Station, TX, United States
| | - Kyunghwa Baek
- Bone Biology Laboratory, Department of Nutrition, Texas A&M University, College Station, TX, United States
| | - Mary Jane De Souza
- Women’s Health and Exercise Laboratory, Department of Kinesiology, The Pennsylvania State University, University Park, PA, United States
- Women’s Health and Exercise Laboratory, Department of Physiology, The Pennsylvania State University, University Park, PA, United States
| | - Scott Lenfest
- Bone Mechanics Laboratory, Department of Mechanical Engineering, Texas A&M University, College Station, TX, United States
| | - Yasaman Shirazi-Fard
- Bone Mechanics Laboratory, Department of Mechanical Engineering, Texas A&M University, College Station, TX, United States
| | - Harry A. Hogan
- Bone Mechanics Laboratory, Department of Mechanical Engineering, Texas A&M University, College Station, TX, United States
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Alves MDDJ, Knechtle B, Silva DDS, Fernandes MSDS, Gomes JH, Thuany M, Aidar FJ, Weiss K, De Souza RF. Effects of High-Intensity Warm-Up on 5000-Meter Performance Time in Trained Long-Distance Runners. J Sports Sci Med 2023; 22:254-262. [PMID: 37293424 PMCID: PMC10245000 DOI: 10.52082/jssm.2023.254] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 04/27/2023] [Indexed: 06/10/2023]
Abstract
Warm-up protocols with high intensities before continuous running provide potential benefits for middle-distance runners. Nevertheless, the effect of high-intensity warm-ups on long-distance runners remains unclear. The purpose of this study was to verify the effect of a high-intensity warm-up protocol on 5000 m performance in trained runners. Thirteen male runners (34 ± 10 years, 62 ± 6 kg, 62.7 ± 5.5 ml/kg/min) performed two 5000 m time trials, preceded by two different warm-ups. One high-intensity warm up (HIWU: 1x 500 m (70% of the running intensity) + 3x 250 m (100% of the running intensity) and one low-intensity warm up (LIWU: 1x 500 m (70% of the running intensity) + 3x 250 m (70% of the running intensity)), where the running intensities were calculated using the results obtained in the Cooper test. Physiological and metabolic responses, and endurance running performance parameters, were evaluated by the Counter Movement Jump (CMJ), running rating of perceived exertion (RPE), blood lactate concentration (BLa), and performance running. Total time for the 5000 m was lower using HIWU when compared to LIWU (1141.4 ± 110.4 s vs. 1147.8 ± 111.0 s; p = 0.03; Hedges' g = 0.66). The HIWU warm-up led to an improvement in pacing strategy during the time trial. After warm-up protocols, the performance on the CMJ was improved only when applying HIWU (p = 0.008). Post warm-up BLa was significantly higher for HIWU vs. LIWU (3.5 ± 1.0 mmol·L-1 vs. 2.3 ± 1.0 mmol·L-1; p = 0.02), with similar behavior for the RPE (p = 0.002), internal load of the session (p = 0.03). The study showed that a high-intensity warm-up protocol can improve performance in the 5000 m in trained endurance runners.
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Affiliation(s)
- Micael D D J Alves
- Department of Physical Education, Federal University of Sergipe (UFS), São Cristóvão, Brazil
- Graduate Program in Physical Education, Postgraduate Program in Physical Education, Federal University of Sergipe (UFS), São Cristóvão, Brazil
- Group of Studies and Research of Performance, Sport, Health and Paralympic Sports-GEPEPS, Federal University of Sergipe, UFS, Sergipe, Brazil
| | - Beat Knechtle
- Institute of Primary Care, University of Zurich, Switzerland
- Medbase St. Gallen Am Vadianplatz, St. Gallen, Switzerland
| | - Devisson D S Silva
- Department of Physical Education, Federal University of Sergipe (UFS), São Cristóvão, Brazil
- Graduate Program in Physical Education, Postgraduate Program in Physical Education, Federal University of Sergipe (UFS), São Cristóvão, Brazil
- Group of Studies and Research of Performance, Sport, Health and Paralympic Sports-GEPEPS, Federal University of Sergipe, UFS, Sergipe, Brazil
| | - Matheus S D S Fernandes
- Graduate Program, Postgraduate Program in Neuropsychiatry and Behavioral Sciences, Federal University of Pernambuco (UFPE), Recife, Brazil
| | - João H Gomes
- Department of Physical Education, Federal University of Sergipe (UFS), São Cristóvão, Brazil
| | - Mabliny Thuany
- Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D), Faculty of Sports, University of Porto, Portugal
| | - Felipe J Aidar
- Department of Physical Education, Federal University of Sergipe (UFS), São Cristóvão, Brazil
- Graduate Program in Physical Education, Postgraduate Program in Physical Education, Federal University of Sergipe (UFS), São Cristóvão, Brazil
- Group of Studies and Research of Performance, Sport, Health and Paralympic Sports-GEPEPS, Federal University of Sergipe, UFS, Sergipe, Brazil
| | - Katja Weiss
- Institute of Primary Care, University of Zurich, Switzerland
| | - Raphael F De Souza
- Department of Physical Education, Federal University of Sergipe (UFS), São Cristóvão, Brazil
- Graduate Program in Physical Education, Postgraduate Program in Physical Education, Federal University of Sergipe (UFS), São Cristóvão, Brazil
- Group of Studies and Research of Performance, Sport, Health and Paralympic Sports-GEPEPS, Federal University of Sergipe, UFS, Sergipe, Brazil
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Hayashi N, Nagastuka H, Sato M, Goto K. Effect of long-term carnosine/anserine supplementation on iron regulation after a prolonged running session. Phys Act Nutr 2023; 27:70-77. [PMID: 37583074 PMCID: PMC10440176 DOI: 10.20463/pan.2023.0020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/08/2023] [Accepted: 06/26/2023] [Indexed: 08/17/2023] Open
Abstract
PURPOSE Exercise-induced hemolysis, which is caused by metabolic and/or mechanical stress during exercise, is considered a potential factor for upregulating hepcidin. Intramuscular carnosine has multiple effects including antioxidant activity. Therefore, this study aimed to determine whether long-term carnosine/anserine supplementation modulates exercise-induced hemolysis and subsequent hepcidin elevation. METHODS Seventeen healthy male participants were allocated to two different groups: participants consuming 1,500 mg/day of carnosine/anserine supplements (n = 9, C+A group) and participants consuming placebo powder supplements (n = 8, PLA group). The participants consumed carnosine/anserine or placebo supplements daily for 30.7 ± 0.4 days. They performed an 80-running session at 70% VO2peak pre-and post-supplementation. Iron regulation and inflammation in response to exercise were evaluated. RESULTS Serum iron concentrations significantly increased after exercise (p < 0.01) and serum haptoglobin concentrations decreased after exercise in both groups (p < 0.01). No significant differences in these variables were observed between pre-and post-supplementation. Serum hepcidin concentration significantly increased 180 min after exercise in both groups (p < 0.01). The integrated area under the curve of hepcidin significantly decreased after supplementation (p = 0.011) but did not vary between the C+A and PLA groups. CONCLUSION Long-term carnosine/anserine supplementation does not affect iron metabolism after a single endurance exercise session.
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Affiliation(s)
- Nanako Hayashi
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Haruna Nagastuka
- Faculty of Sports and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Mikako Sato
- NH Foods Ltd. R&D Center, Midorigahara, Tsukuba, Ibaraki, Japan
| | - Kazushige Goto
- Faculty of Sports and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
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Kyun S, Kim J, Hwang D, Jang I, Choi J, Kim J, Jung WS, Hwang H, Kim SW, Kim J, Jung K, Seo J, Sun Y, Park HY, Lim K. Exogenous lactate intake immediately after endurance exercise increases time to exhaustion in VO2max measurements in mice. Phys Act Nutr 2023; 27:13-18. [PMID: 37583067 PMCID: PMC10440182 DOI: 10.20463/pan.2023.0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/05/2023] [Accepted: 06/13/2023] [Indexed: 08/17/2023] Open
Abstract
PURPOSE The purpose of the study was to investigate the effects of 4 weeks of lactate intake immediately after endurance exercise on maximal oxygen uptake (VO2max) in exercise performance. METHODS Seven-week-old mice from the Institute of Cancer Research (ICR) were randomly divided into four groups: vehicle intake (SE/CON), lactate intake (SE/LAC), endurance exercise with vehicle intake (EX/ CON), and lactate intake with endurance exercise (EX/ LAC). Mice were subjected to 60-70% VO2max endurance exercise with or without oral lactate intake 5 days/ week for 4 weeks. VO2max measurements (VO2max, time to exhaustion (TTE), respiratory exchange rate, fat oxidation, and carbohydrate oxidation) were recorded at the end of the study period. After 48 h of VO2max measurement, the mice were sacrificed, and three different abdominal fat samples (epididymal, perirenal, and mesenteric) were collected. RESULTS Body weight and abdominal fat mass did not differ between the groups. When measuring VO2max, endurance exercise raised VO2max, and lactate intake after endurance exercise increased TTE. The change in energy substrate utilization during VO2max measurement demonstrated that although the respiratory exchange rate and fat oxidation were enhanced by lactate intake, there were no synergistic effects of lactate intake and endurance exercise. CONCLUSION Lactate intake immediately after endurance exercises can improve exercise performance, indicating the benefit of long-term exogenous lactate intake as an exercise supplement.
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Affiliation(s)
- Sunghwan Kyun
- Department of Sports Medicine and Science, Konkuk Unisersity, Seoul, Republic of Korea
| | - Jisu Kim
- Department of Sports Medicine and Science, Konkuk Unisersity, Seoul, Republic of Korea
| | - Deunsol Hwang
- Department of Sports Medicine and Science, Konkuk Unisersity, Seoul, Republic of Korea
| | - Inkwon Jang
- Department of Sports Medicine and Science, Konkuk Unisersity, Seoul, Republic of Korea
| | - Jeehee Choi
- Department of Sports Medicine and Science, Konkuk Unisersity, Seoul, Republic of Korea
| | - Jongwon Kim
- Department of Sports Medicine and Science, Konkuk Unisersity, Seoul, Republic of Korea
| | - Won-Sang Jung
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Republic of Korea
| | - Hyejung Hwang
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Republic of Korea
| | - Sung-Woo Kim
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Republic of Korea
| | - Jeeyoung Kim
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Republic of Korea
| | - Kyunghwa Jung
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Republic of Korea
| | - Jisoo Seo
- Department of Sports Medicine and Science, Konkuk Unisersity, Seoul, Republic of Korea
| | - Yerin Sun
- Department of Sports Medicine and Science, Konkuk Unisersity, Seoul, Republic of Korea
| | - Hun-Young Park
- Department of Sports Medicine and Science, Konkuk Unisersity, Seoul, Republic of Korea
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Republic of Korea
| | - Kiwon Lim
- Department of Sports Medicine and Science, Konkuk Unisersity, Seoul, Republic of Korea
- Department of Physical Education, Konkuk Unisersity, Seoul, Republic of Korea
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Republic of Korea
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Leuchtmann AB, Afifi Y, Ritz D, Handschin C. Effects of high-resistance wheel running on hallmarks of endurance and resistance training adaptations in mice. Physiol Rep 2023; 11:e15701. [PMID: 37280719 DOI: 10.14814/phy2.15701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 06/08/2023] Open
Abstract
Exercise effectively promotes and preserves cardiorespiratory, neuromuscular, metabolic, and cognitive functions throughout life. The molecular mechanisms underlying the beneficial adaptations to exercise training are, however, still poorly understood. To improve the mechanistic study of specific exercise training adaptations, standardized, physiological, and well-characterized training interventions are required. Therefore, we performed a comprehensive interrogation of systemic changes and muscle-specific cellular and molecular adaptations to voluntary low-resistance wheel running (Run) and progressive high-resistance wheel running (RR) in young male mice. Following 10 weeks of training, both groups showed similar improvements in body composition and peak oxygen uptake (V̇O2peak ), as well as elevated mitochondrial proteins and capillarization markers in the M. plantaris. Run mice clearly outperformed RR mice in a forced treadmill running capacity test, while RR mice displayed increased grip strength as well as superior mass gains in the M. soleus, associated with distinct proteomic changes specifying the two paradigms. Thus, even though both training modalities induce overlapping adaptations, Run interventions preferably improve submaximal running performance, while progressive RR is a valid model to study training-induced gains in grip strength and plantar flexor hypertrophy.
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Affiliation(s)
| | | | - Danilo Ritz
- Proteomics Core Facility, Biozentrum, University of Basel, Basel, Switzerland
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Bennett S, Brocherie F, Phelan MM, Tiollier E, Guibert E, Morales‐Artacho AJ, Lalire P, Morton JP, Louis JB, Owens DJ. Acute heat stress amplifies exercise-induced metabolomic perturbations and reveals variation in circulating amino acids in endurance-trained males. Exp Physiol 2023; 108:838-851. [PMID: 36691850 PMCID: PMC10988456 DOI: 10.1113/ep090911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 01/03/2023] [Indexed: 01/25/2023]
Abstract
NEW FINDINGS What is the central question of this study? Whole-body substrate utilisation is altered during exercise in hot environments, characterised by increased glycolytic metabolism: does heat stress alter the serum metabolome in response to high intensity exercise? What are the main finding and its importance? Alongside increases in glycolytic metabolite abundance, circulating amino acid concentrations are reduced following exercise under heat stress. Prior research has overlooked the impact of heat stress on protein metabolism during exercise, raising important practical implications for protein intake recommendations in the heat. ABSTRACT Using untargeted metabolomics, we aimed to characterise the systemic impact of environmental heat stress during exercise. Twenty-three trained male triathletes (V ̇ O 2 peak ${\dot V_{{{\rm{O}}_2}{\rm{peak}}}}$ = 64.8 ± 9.2 ml kg min-1 ) completed a 30-min exercise test in hot (35°C) and temperate (21°C) conditions. Venous blood samples were collected immediately pre- and post-exercise, and the serum fraction was assessed via untargeted 1 H-NMR metabolomics. Data were analysed via uni- and multivariate analyses to identify differences between conditions. Mean power output was higher in temperate (231 ± 36 W) versus hot (223 ± 31 W) conditions (P < 0.001). Mean heart rate (temperate, 162 ± 10 beats min-1 , hot, 167 ± 9 beats min-1 , P < 0.001), peak core temperature (Trec ), core temperature change (ΔTrec ) (P < 0.001) and peak rating of perceived exertion (P = 0.005) were higher in hot versus temperate conditions. Change in metabolite abundance following exercise revealed distinct clustering following multivariate analysis. Six metabolites increased (2-hydroxyvaleric acid, acetate, alanine, glucarate, glucose, lactate) in hot relative to temperate (P < 0.05) conditions. Leucine and lysine decreased in both conditions but to a greater extent in temperate conditions (P < 0.05). Citrate (P = 0.04) was greater in temperate conditions whilst creatinine decreased in hot conditions only (P > 0.05). Environmental heat stress increased glycolytic metabolite abundance and led to distinct alterations in the circulating amino acid availability, including increased alanine, glutamine, leucine and isoleucine. The data highlight the need for additional exercise nutrition and metabolism research, specifically focusing on protein requirements for exercise under heat stress.
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Affiliation(s)
- Samuel Bennett
- Research Institute of Sport and Exercise Science (RISES)Liverpool John Moores UniversityLiverpoolUK
- Laboratory SportExpertise and Performance (EA 7370)French Institute of SportParisFrance
| | - Franck Brocherie
- Laboratory SportExpertise and Performance (EA 7370)French Institute of SportParisFrance
| | - Marie M. Phelan
- NMR Metabolomics Shared Research FacilityTechnology DirectorateUniversity of LiverpoolLiverpoolUK
| | - Eve Tiollier
- Laboratory SportExpertise and Performance (EA 7370)French Institute of SportParisFrance
| | - Elodie Guibert
- Laboratory SportExpertise and Performance (EA 7370)French Institute of SportParisFrance
| | | | - Paul Lalire
- French Triathlon Federation (FFTri)Saint Denis La PlaineFrance
| | - James P. Morton
- Research Institute of Sport and Exercise Science (RISES)Liverpool John Moores UniversityLiverpoolUK
| | - Julien B. Louis
- Research Institute of Sport and Exercise Science (RISES)Liverpool John Moores UniversityLiverpoolUK
| | - Daniel J. Owens
- Research Institute of Sport and Exercise Science (RISES)Liverpool John Moores UniversityLiverpoolUK
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Baum O, Huber-Abel FAM, Flück M. nNOS Increases Fiber Type-Specific Angiogenesis in Skeletal Muscle of Mice in Response to Endurance Exercise. Int J Mol Sci 2023; 24:ijms24119341. [PMID: 37298293 DOI: 10.3390/ijms24119341] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/23/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
We studied the relationship between neuronal NO synthase (nNOS) expression and capillarity in the tibialis anterior (TA) muscle of mice subjected to treadmill training. The mRNA (+131%) and protein (+63%) levels of nNOS were higher (p ≤ 0.05) in the TA muscle of C57BL/6 mice undergoing treadmill training for 28 days than in those of littermates remaining sedentary, indicating an up-regulation of nNOS by endurance exercise. Both TA muscles of 16 C57BL/6 mice were subjected to gene electroporation with either the pIRES2-ZsGreen1 plasmid (control plasmid) or the pIRES2-ZsGreen1-nNOS gene-inserted plasmid (nNOS plasmid). Subsequently, one group of mice (n = 8) underwent treadmill training for seven days, while the second group of mice (n = 8) remained sedentary. At study end, 12-18% of TA muscle fibers expressed the fluorescent reporter gene ZsGreen1. Immunofluorescence for nNOS was 23% higher (p ≤ 0.05) in ZsGreen1-positive fibers than ZsGreen1-negative fibers from the nNOS-transfected TA muscle of mice subjected to treadmill training. Capillary contacts around myosin heavy-chain (MHC)-IIb immunoreactive fibers (14.2%; p ≤ 0.05) were only higher in ZsGreen1-positive fibers than ZsGreen1-negative fibers in the nNOS-plasmid-transfected TA muscles of trained mice. Our observations are in line with an angiogenic effect of quantitative increases in nNOS expression, specifically in type-IIb muscle fibers after treadmill training.
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Affiliation(s)
- Oliver Baum
- Institute of Physiology, Charité-Universitätsmedizin, 10117 Berlin, Germany
| | | | - Martin Flück
- Heart Repair and Regeneration Laboratory, Department EMC, Faculty of Science and Medicine, University of Fribourg, 1700 Fribourg, Switzerland
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Jaguri A, Al Thani AA, Elrayess MA. Exercise Metabolome: Insights for Health and Performance. Metabolites 2023; 13:694. [PMID: 37367852 DOI: 10.3390/metabo13060694] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/14/2023] [Accepted: 05/23/2023] [Indexed: 06/28/2023] Open
Abstract
Exercise has many benefits for physical and mental well-being. Metabolomics research has allowed scientists to study the impact of exercise on the body by analyzing metabolites released by tissues such as skeletal muscle, bone, and the liver. Endurance training increases mitochondrial content and oxidative enzymes, while resistance training increases muscle fiber and glycolytic enzymes. Acute endurance exercise affects amino acid metabolism, fat metabolism, cellular energy metabolism, and cofactor and vitamin metabolism. Subacute endurance exercise alters amino acid metabolism, lipid metabolism, and nucleotide metabolism. Chronic endurance exercise improves lipid metabolism and changes amino acid metabolism. Acute resistance exercise changes several metabolic pathways, including anaerobic processes and muscular strength. Chronic resistance exercise affects metabolic pathways, resulting in skeletal muscle adaptations. Combined endurance-resistance exercise alters lipid metabolism, carbohydrate metabolism, and amino acid metabolism, increasing anaerobic metabolic capacity and fatigue resistance. Studying exercise-induced metabolites is a growing field, and further research can uncover the underlying metabolic mechanisms and help tailor exercise programs for optimal health and performance.
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Affiliation(s)
- Aayami Jaguri
- Weill Cornell Medicine-Qatar, Doha P.O. Box 24811, Qatar
- Biomedical Research Center, Qatar University, Doha P.O. Box 2713, Qatar
| | - Asmaa A Al Thani
- Biomedical Research Center, Qatar University, Doha P.O. Box 2713, Qatar
- QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| | - Mohamed A Elrayess
- Biomedical Research Center, Qatar University, Doha P.O. Box 2713, Qatar
- QU Health, Qatar University, Doha P.O. Box 2713, Qatar
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Beckner ME, Thompson L, Radcliffe PN, Cherian R, Wilson M, Barringer N, Margolis LM, Karl JP. Sex differences in body composition and serum metabolome responses to sustained, physical training suggest enhanced fat oxidation in women compared with men. Physiol Genomics 2023; 55:235-247. [PMID: 37012051 PMCID: PMC10190831 DOI: 10.1152/physiolgenomics.00180.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/02/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023] Open
Abstract
Sex differences in energy metabolism during acute, submaximal exercise are well documented. Whether these sex differences influence metabolic and physiological responses to sustained, physically demanding activities is not well characterized. This study aimed to identify sex differences within changes in the serum metabolome in relation to changes in body composition, physical performance, and circulating markers of endocrine and metabolic status during a 17-day military training exercise. Blood was collected, and body composition and lower body power were measured before and after the training on 72 cadets (18 women). Total daily energy expenditure (TDEE) was assessed using doubly labeled water in a subset throughout. TDEE was greater in men (4,085 ± 482 kcal/d) than in women (2,982 ± 472 kcal/d, P < 0.001), but not after adjustment for dry lean mass (DLM). Men tended to lose more DLM than women (mean change [95% CI]: -0.2[-0.3, -0.1] vs. -0.0[-0.0, 0.0] kg, P = 0.063, Cohen's d = 0.50) and have greater reductions in lower body power (-244[-314, -174] vs. -130[-209, -51] W, P = 0.085, d = 0.49). Reductions in DLM and lower body power were correlated (r = 0.325, P = 0.006). Women demonstrated greater fat oxidation than men (Δfat mass/DLM: -0.20[-0.24, -0.17] vs. -0.15[-0.17, -0.13] kg, P = 0.012, d = 0.64). Metabolites within pathways of fatty acid, endocannabinoid, lysophospholipid, phosphatidylcholine, phosphatidylethanolamine, and plasmalogen metabolism increased in women relative to men. Independent of sex, changes in metabolites related to lipid metabolism were inversely associated with changes in body mass and positively associated with changes in endocrine and metabolic status. These data suggest that during sustained military training, women preferentially mobilize fat stores compared with men, which may be beneficial for mitigating loss of lean mass and lower body power.NEW & NOTEWORTHY Women preferentially mobilize fat stores compared with men in response to sustained, physically demanding military training, as evidenced by increased lipid metabolites and enhanced fat oxidation, which may be beneficial for mitigating loss of lean mass and lower body power.
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Affiliation(s)
- Meaghan E Beckner
- U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts, United States
- Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee, United States
| | - Lauren Thompson
- U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts, United States
| | - Patrick N Radcliffe
- U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts, United States
- Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee, United States
| | - Rebecca Cherian
- U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts, United States
| | - Marques Wilson
- U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts, United States
| | - Nicholas Barringer
- Medical Center of Excellence, Joint Base San Antonio-Fort Sam Houston, Texas, United States
| | - Lee M Margolis
- U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts, United States
| | - J Philip Karl
- U.S. Army Research Institute of Environmental Medicine, Natick, Massachusetts, United States
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Wang Y, Li J, Zhang Z, Wang R, Bo H, Zhang Y. Exercise Improves the Coordination of the Mitochondrial Unfolded Protein Response and Mitophagy in Aging Skeletal Muscle. Life (Basel) 2023; 13:life13041006. [PMID: 37109535 PMCID: PMC10142204 DOI: 10.3390/life13041006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
The mitochondrial unfolded protein response (UPRmt) and mitophagy are two mitochondrial quality control (MQC) systems that work at the molecular and organelle levels, respectively, to maintain mitochondrial homeostasis. Under stress conditions, these two processes are simultaneously activated and compensate for each other when one process is insufficient, indicating mechanistic coordination between the UPRmt and mitophagy that is likely controlled by common upstream signals. This review focuses on the molecular signals regulating this coordination and presents evidence showing that this coordination mechanism is impaired during aging and promoted by exercise. Furthermore, the bidirectional regulation of reactive oxygen species (ROS) and AMPK in modulating this mechanism is discussed. The hierarchical surveillance network of MQC can be targeted by exercise-derived ROS to attenuate aging, which offers a molecular basis for potential therapeutic interventions for sarcopenia.
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Affiliation(s)
- Yan Wang
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China
- School of Physical Education, Guangdong Institute of Petrochemical Technology, Maoming 525000, China
| | - Jialin Li
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China
| | - Ziyi Zhang
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China
| | - Runzi Wang
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China
| | - Hai Bo
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China
- Department of Military Training Medicines, Logistics University of Chinese People's Armed Police Force, Tianjin 300162, China
| | - Yong Zhang
- Tianjin Key Laboratory of Exercise Physiology and Sports Medicine, School of Exercise and Health, Tianjin University of Sport, Tianjin 301617, China
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Andiana O, Welis W, Taufik MS, Widiastuti, Siregar AH, Raharjo S. Effects of weight-bearing vs. non-weight-bearing endurance exercise on reducing body fat and inflammatory markers in obese females. J Basic Clin Physiol Pharmacol 2023; 34:215-225. [PMID: 36123345 DOI: 10.1515/jbcpp-2022-0158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/29/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Endurance exercise is an effective strategy for maintaining an anti-inflammatory environment and weight management. However, the effect of this type of exercise on decreasing body fat and TNF-α levels and increasing adiponectin levels is controversial. The aims of this study was to prove the effects of weight-bearing vs. non-weight-bearing endurance exercise on reducing body fat and inflammatory markers in obese females. METHODS 24 obese adolescents were recruited from female students from the State University of Malang. The interventions given in this study were weight-bearing endurance exercise (WBEE), and non-weight-bearing endurance exercise (NWBEE). Serum TNF-α levels and serum adiponectin levels were evaluated using enzyme-linked immunosorbent assay (ELISA). Statistical analysis techniques use paired sample T-test with a significant level of 5%. RESULTS Results of the statistical analysis show that the average body fat (PBF, FM, FFM) and TNF-α levels before endurance exercise vs. after endurance exercise in both types of exercise experienced a significant decrease (p≤0.05), while average adiponectin levels in both types of exercise experienced a significant increase before endurance exercise vs. after endurance exercise (p≤0.001). CONCLUSIONS In general, it can be concluded that weight-bearing and non-weight-bearing endurance exercise with moderate-intensity for 40 min/exercise session reduce body fat and TNF-α levels and increase adiponectin levels as a marker of inflammation in obese female.
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Affiliation(s)
- Olivia Andiana
- Department of Sport Science, Faculty of Sport Science, Universitas Negeri Malang, East Java, Malang, Indonesia
| | - Wilda Welis
- Department of Sport Science, Faculty of Sport Science, State University of Padang, Padang, West Sumatra, Indonesia
| | - Muhamad Syamsul Taufik
- Department of Physical Education, Health and Recreation, Faculty of Teacher and Education, University of Suryakancana, Cianjur, West Java, Indonesia
| | - Widiastuti
- Department of Sport Science, Faculty of Sport Science, State University of Jakarta, East Jakarta, Special Capital Region of Jakarta, Indonesia
| | - Abdul Hakim Siregar
- Department of Physical Education, Health and Recreation, Faculty of Sports Sciences, State University of Medan, Medan, North Sumatra, Indonesia
| | - Slamet Raharjo
- Department of Sport Science, Faculty of Sport Science, Universitas Negeri Malang, East Java, Malang, Indonesia
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47
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Muñoz-Gómez E, Mollà-Casanova S, Sempere-Rubio N, Serra-Añó P, Aguilar-Rodríguez M, Alonso-Aubin DA, Chulvi-Medrano I, Inglés M. Potential Benefits of a Single Session of Remote Ischemic Preconditioning and Walking in Sedentary Older Adults: A Pilot Study. Int J Environ Res Public Health 2023; 20:3515. [PMID: 36834210 PMCID: PMC9966602 DOI: 10.3390/ijerph20043515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/10/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Ischemic preconditioning (IPC) has shown positive effects in endurance-type sports among healthy young individuals; however, its effects in endurance-type exercises in older adults have not been explored. We aimed to examine the acute effects of a single session of IPC prior to an endurance-type exercise on cardiovascular- and physical-function-related parameters in sedentary older adults. A pilot study with a time-series design was carried out. Nine participants were enrolled consecutively in the following intervention groups: (i) SHAM (sham IPC + walking) and (ii) IPC (IPC + walking) groups. The main outcomes were resting systolic (SBP) and diastolic (DBP) blood pressure, heart rate (HR), peripheral oxygen saturation (SpO2), maximum isometric voluntary contraction (MIVC), endurance performance, and perceived fatigue. After the intervention, the IPC group showed a significant reduction in SBP, whereas SpO2 decreased in the SHAM group. The IPC group maintained quadriceps MIVC levels, whereas these levels dropped in the SHAM group. No changes in DBP, resting HR, endurance, or fatigue in any group were observed. These findings are of interest for the promotion of cardiovascular and physical health in older people.
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Affiliation(s)
- Elena Muñoz-Gómez
- Research Unit in Clinical Biomechanics (UBIC), Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain
| | - Sara Mollà-Casanova
- Research Unit in Clinical Biomechanics (UBIC), Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain
| | - Núria Sempere-Rubio
- Research Unit in Clinical Biomechanics (UBIC), Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain
| | - Pilar Serra-Añó
- Research Unit in Clinical Biomechanics (UBIC), Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain
| | - Marta Aguilar-Rodríguez
- Research Unit in Clinical Biomechanics (UBIC), Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain
| | - Diego A. Alonso-Aubin
- Strength Training and Neuromuscular Performance Research Group (STreNgthP), Faculty of Health, Camilo José Cela University, 28692 Madrid, Spain
| | - Iván Chulvi-Medrano
- UIRFIDE Research Group, Physical Education and Sport Department, University of Valencia, 46010 Valencia, Spain
| | - Marta Inglés
- Research Unit in Clinical Biomechanics (UBIC), Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain
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48
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Beckner ME, Thompson L, Radcliffe PN, Cherian RV, Wilson M, Barringer N, Margolis LM, Karl JP. Sex differences in body composition and serum metabolome responses to sustained, physical training suggest enhanced fat oxidation in women compared with men. Physiol Genomics 2023. [PMID: 36779667 DOI: 10.1152/physiolgenomics.00169.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023] Open
Abstract
Sex differences in energy metabolism during acute, sub-maximal exercise are well documented. Whether these sex differences influence metabolic and physiologic responses to sustained, physically demanding activities is not well characterized. This study aimed to identify sex differences within changes in the serum metabolome in relation to changes in body composition, physical performance, and endocrine status during a 17-day military training exercise. Blood was collected, and body composition and lower-body power were measured before and after the training on 72 cadets (18 women). Total daily energy expenditure (TDEE) was assessed in a subset throughout. TDEE was greater in men (4,085±482kcal/d) than women (2,982±472kcal/d, p<0.001), but not after adjustment for dry lean mass (DLM). Men tended to lose more DLM than women (-0.2[-0.3,-0.1] vs. -0.0[-0.0,0.0] kg, p=0.063, Cohen's d=0.50) and have greater reductions in lower body power (-244[-314,-174] vs. -130[-209,-51] Watts, p=0.085, d=0.49). Reductions in DLM and lower body power were correlated (r=0.325, p=0.006). Women demonstrated greater fat oxidation than men (Δfat mass/DLM: -0.20[-0.24,-0.17] vs. -0.15[-0.17,-0.13] kg, p=0.012, d=0.64). Metabolites within pathways of fatty acid, endocannabinoid, lysophospholipid, phosphatidylcholine, phosphatidylethanolamine, and plasmalogen metabolism increased in women relative to men. Independent of sex, changes in metabolites related to lipid metabolism were inversely associated with changes in body mass and positively associated with changes in endocrine and metabolic status. These data suggest that during sustained military training, women preferentially mobilize fat stores compared with men, which may be beneficial for mitigating loss of lean mass and lower body power.
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Affiliation(s)
- Meaghan E Beckner
- U.S. Army Research Institute of Environmental Medicine, Natick, MA, United States.,Oak Ridge Institute for Science and Education, Oak Ridge, TN, United States
| | - Lauren Thompson
- U.S. Army Research Institute of Environmental Medicine, Natick, MA, United States
| | - Patrick N Radcliffe
- U.S. Army Research Institute of Environmental Medicine, Natick, MA, United States.,Oak Ridge Institute for Science and Education, Oak Ridge, TN, United States
| | - Rebecca V Cherian
- U.S. Army Research Institute of Environmental Medicine, Natick, MA, United States
| | - Marques Wilson
- U.S. Army Research Institute of Environmental Medicine, Natick, MA, United States
| | - Nicholas Barringer
- Medical Center of Excellence Joint Base San Antonio-Fort Sam Houston, TX, United States
| | - Lee M Margolis
- U.S. Army Research Institute of Environmental Medicine, Natick, MA, United States
| | - J Philip Karl
- U.S. Army Research Institute of Environmental Medicine, Natick, MA, United States
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49
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Corbí-Santamaría P, Herrero-Molleda A, García-López J, Boullosa D, García-Tormo V. Variable Pacing Is Associated with Performance during the OCC ® Ultra-Trail du Mont-Blanc ® (2017-2021). Int J Environ Res Public Health 2023; 20:3297. [PMID: 36833992 PMCID: PMC9962197 DOI: 10.3390/ijerph20043297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/01/2023] [Accepted: 02/11/2023] [Indexed: 06/18/2023]
Abstract
The current evidence suggests that pacing may not be affected by performance level or sex in trail-running races as may occur in road running races. However, the previous studies included races of >100 km. Therefore, we aimed to verify the influence of performance level and sex on pacing in the last four (2017, 2018, 2019, and 2021) editions of a shorter (56.3 km) ultra-trail running race (i.e., Orsières-Champex-Chamonix; OCC®) that maintained the same race profile. The mean finishing time for the 5656 participants was 10 h 20 min 33 s ± 2 h 01 min 19 s. Pacing variability (CV%) was higher in high-level participants, thus showing a greater ability to adapt their pace to the race profile than low-level runners. Males also had a higher pacing variability than females although the effect sizes were small. Based on the current findings, we may recommend for non-elite OCC® participants to adapt their pace to the race profile with a slower pace during uphills and a faster pace during downhills. Further studies including participants' experience are necessary to confirm the effectiveness of this suggestion in trail-running races of variable distances.
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Affiliation(s)
| | - Alba Herrero-Molleda
- Faculty of Physical Activity and Sports Sciences, AMRED, Human Movement and Sports Performance Analysis, Universidad de León, 24071 León, Spain
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50
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Rogers B, Schaffarczyk M, Gronwald T. Improved Estimation of Exercise Intensity Thresholds by Combining Dual Non-Invasive Biomarker Concepts: Correlation Properties of Heart Rate Variability and Respiratory Frequency. Sensors (Basel) 2023; 23:1973. [PMID: 36850571 PMCID: PMC9967516 DOI: 10.3390/s23041973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Identifying exercise intensity boundaries has been shown to be important during endurance training for performance enhancement and rehabilitation. Unfortunately, even though surrogate markers show promise when assessed on a group level, substantial deviation from gold standards can be present in each individual. The aim of this study was to evaluate whether combining two surrogate intensity markers improved this agreement. Electrocardiogram (ECG) and gas exchange data were obtained from 21 participants who performed an incremental cycling ramp to exhaustion and evaluated for first (VT1) and second (VT2) ventilatory thresholds, heart rate (HR) variability (HRV), and ECG derived respiratory frequency (EDR). HRV thresholds (HRVT) were based on the non-linear index a1 of a Detrended Fluctuation Analysis (DFA a1) and EDR thresholds (EDRT) upon the second derivative of the sixth-order polynomial of EDR over time. The average of HRVT and EDRT HR was set as the combined threshold (Combo). Mean VT1 was reached at a HR of 141 ± 15, HRVT1 at 152 ± 14 (p < 0.001), EDRT1 at 133 ± 12 (p < 0.001), and Combo1 at 140 ± 13 (p = 0.36) bpm with Pearson's r of 0.83, 0.78, and 0.84, respectively, for comparisons to VT1. A Bland-Altman analysis showed mean biases of 8.3 ± 7.9, -8.3 ± 9.5, and -1.7 ± 8.3 bpm, respectively. A mean VT2 was reached at a HR of 165 ± 13, HRVT2 at 167 ± 10 (p = 0.89), EDRT2 at 164 ± 14 (p = 0.36), and Combo2 at 164 ± 13 (p = 0.59) bpm with Pearson's r of 0.58, 0.95, and 0.94, respectively, for comparisons to VT2. A Bland-Altman analysis showed mean biases of -0.3 ± 8.9, -1.0 ± 4.6, and -0.6 ± 4.6 bpm, respectively. Both the DFA a1 and EDR intensity thresholds based on HR taken individually had moderate agreement to targets derived through gas exchange measurements. By combining both non-invasive approaches, there was improved correlation, reduced bias, and limits of agreement to the respective corresponding HRs at VT1 and VT2.
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Affiliation(s)
- Bruce Rogers
- College of Medicine, University of Central Florida, 6850 Lake Nona Boulevard, Orlando, FL 32827-7408, USA
| | - Marcelle Schaffarczyk
- Interdisciplinary Institute of Exercise Science and Sports Medicine, MSH Medical School Hamburg, University of Applied Sciences and Medical University, Am Kaiserkai 1, 20457 Hamburg, Germany
| | - Thomas Gronwald
- Interdisciplinary Institute of Exercise Science and Sports Medicine, MSH Medical School Hamburg, University of Applied Sciences and Medical University, Am Kaiserkai 1, 20457 Hamburg, Germany
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