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Bester R, Stander Z, Mason S, Keane KM, Howatson G, Clifford T, Stevenson EJ, Loots DT. The metabolic recovery of marathon runners: an untargeted 1H-NMR metabolomics perspective. Front Physiol 2023; 14:1117687. [PMID: 37215177 PMCID: PMC10192615 DOI: 10.3389/fphys.2023.1117687] [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: 12/06/2022] [Accepted: 04/20/2023] [Indexed: 05/24/2023] Open
Abstract
Introduction: Extreme endurance events may result in numerous adverse metabolic, immunologic, and physiological perturbations that may diminish athletic performance and adversely affect the overall health status of an athlete, especially in the absence of sufficient recovery. A comprehensive understanding of the post-marathon recovering metabolome, may aid in the identification of new biomarkers associated with marathon-induced stress, recovery, and adaptation, which can facilitate the development of improved training and recovery programs and personalized monitoring of athletic health/recovery/performance. Nevertheless, an untargeted, multi-disciplinary elucidation of the complex underlying biochemical mechanisms involved in recovery after such an endurance event is yet to be demonstrated. Methods: This investigation employed an untargeted proton nuclear magnetic resonance metabolomics approach to characterize the post-marathon recovering metabolome by systematically comparing the pre-, immediately post, 24, and 48 h post-marathon serum metabolite profiles of 15 athletes. Results and Discussion: A total of 26 metabolites were identified to fluctuate significantly among post-marathon and recovery time points and were mainly attributed to the recovery of adenosine triphosphate, redox balance and glycogen stores, amino acid oxidation, changes to gut microbiota, and energy drink consumption during the post-marathon recovery phase. Additionally, metabolites associated with delayed-onset muscle soreness were observed; however, the mechanisms underlying this commonly reported phenomenon remain to be elucidated. Although complete metabolic recovery of the energy-producing pathways and fuel substrate stores was attained within the 48 h recovery period, several metabolites remained perturbed throughout the 48 h recovery period and/or fluctuated again following their initial recovery to pre-marathon-related levels.
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Affiliation(s)
- Rachelle Bester
- Human Metabolomics, Department of Biochemistry, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom, South Africa
| | - Zinandré Stander
- Human Metabolomics, Department of Biochemistry, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom, South Africa
| | - Shayne Mason
- Human Metabolomics, Department of Biochemistry, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom, South Africa
| | - Karen M. Keane
- Department of Sport Exercise and Nutrition, School of Science and Computing, Atlantic Technological University, Galway, Ireland
| | - Glyn Howatson
- Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom
- Water Research Group, School of Environmental Sciences and Development, North-West University, Potchefstroom, South Africa
| | - Tom Clifford
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom
| | - Emma J. Stevenson
- Human and Exercise Nutrition Research Centre, School of Biomedical, Nutritional and Sport Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Du Toit Loots
- Human Metabolomics, Department of Biochemistry, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom, South Africa
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Dolan E, Dumas A, Keane KM, Bestetti GC, Freitas LHM, Gualano B, Kohrt WM, Kelley GA, Pereira RMR, Sale C, Swinton P. The Bone Biomarker Response To An Acute Bout Of Exercise: A Systematic Review With Meta-analysis. Med Sci Sports Exerc 2022. [DOI: 10.1249/01.mss.0000875508.70657.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Howatson G, Snaith GC, Kimble R, Cowper G, Keane KM. Improved Endurance Running Performance Following Haskap Berry ( Lonicera caerulea L.) Ingestion. Nutrients 2022; 14:780. [PMID: 35215430 PMCID: PMC8877138 DOI: 10.3390/nu14040780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/10/2022] [Accepted: 02/10/2022] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Food high in (poly)phenolic compounds, such as anthocyanins, have the potential to improve exercise recovery and exercise performance. Haskap berries are rich in anthocyanins, but no research has examined the potential to improve human performance. The aim of this study was to determine the influence of Haskap berry on parameters of endurance running performance. METHODS Using a double-blind, placebo controlled, independent groups design, 30 male recreational runners (mean ± SD age, 33 ± 7 years; stature, 178.2 ± 7.2 cm; mass, 77.7 ± 10.6 kg; V˙O2peak, 52.2 ± 6.6 mL/kg/min) volunteered to participate. Following familiarisation, volunteers visited the laboratory twice (separated by seven days) to assess submaximal, maximal and 5 km time trial running performance. After the first visit, volunteers were randomly assigned to consume either the Haskap berry intervention or an isocaloric placebo control. RESULTS There were modest changes in heart rate and V˙O2 at submaximal intensities (p < 0.05). Time to exhaustion during the V˙O2peak test was longer in the Haskap group by 20 s (p = 0.031). Additionally, 5 km time trial performance was improved in the Haskap group by ~21 s (p = 0.016), which equated to a 0.25 km/h increase in mean running speed compared to the placebo control; this represented a >2% improvement in running performance. CONCLUSIONS The application of this newly identified functional food to athletes has the capacity to improve endurance running performance.
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Affiliation(s)
- Glyn Howatson
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK; (G.C.S.); (G.C.); (K.M.K.)
- Water Research Group, School of Environmental Sciences and Development, Northwest University, Potchefstroom 2531, South Africa
| | - Gemma C. Snaith
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK; (G.C.S.); (G.C.); (K.M.K.)
| | - Rachel Kimble
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK;
| | - Gavin Cowper
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK; (G.C.S.); (G.C.); (K.M.K.)
| | - Karen M. Keane
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK; (G.C.S.); (G.C.); (K.M.K.)
- School of Science and Computing, Galway-Mayo Institute of Technology, H91 T8NW Galway, Ireland
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Kimble R, Keane KM, Lodge JK, Cheung W, Haskell-Ramsay CF, Howatson G. Polyphenol-rich tart cherries ( Prunus Cerasus, cv Montmorency) improve sustained attention, feelings of alertness and mental fatigue and influence the plasma metabolome in middle-aged adults: a randomised, placebo-controlled trial. Br J Nutr 2022; 128:1-12. [PMID: 35109960 PMCID: PMC9723490 DOI: 10.1017/s0007114522000460] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 06/17/2021] [Revised: 12/21/2021] [Accepted: 01/31/2022] [Indexed: 12/14/2022]
Abstract
Tart Montmorency cherries (MC) are a particularly rich source of anthocyanins and other polyphenols that have been shown to elicit antioxidant, anti-inflammatory and vasomodulatory actions. The current study aimed to determine the influence of chronic MC supplementation on cognitive function and mood. In a 3-month double-blinded, placebo-controlled parallel study, middle-aged adults (mean ± sd: 48 ± 6 years) were randomly assigned to either 30 ml twice daily of MC (n 25) or the same amount of an isoenergetic placebo (n 25). Cognitive function and mood were assessed before and after supplementation using a computerised cognitive task battery and visual analogue scales. Cerebral blood flow was also monitored by near-infrared spectroscopy during the task battery, and questionnaires were administered to determine subjective sleep and health status and plasma metabolomics were analysed before and after supplementation. After 3 months, the MC resulted in higher accuracy in digit vigilance (mean difference: 3·3, 95 % CI: 0·2, 6·4 %) with lower number of false alarms (mean difference: -1·2, 95 % CI: -2·0, -0·4) compared with the placebo. There was also a treatment effect for higher alertness (mean difference: 5·9, 95 % CI: 1·3, 10·5 %) and lower mental fatigue ratings (mean difference -9·5, 95 % CI: -16·5, -2·5 %) with MC. Plasma metabolomics revealed an increase in a number of amino acids in response to MC intake, but not placebo. These data suggest an anti-fatiguing effect of MC supplementation as well as the ability to improve sustained attention during times of high cognitive demand, this could be related to changes in amino acid metabolism.
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Affiliation(s)
- Rachel Kimble
- Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne, UK
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Karen M. Keane
- School of Science and Computing, Galway-Mayo Institute of Technology, Galway, Ireland
| | - John K. Lodge
- Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne, UK
| | - William Cheung
- Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne, UK
| | | | - Glyn Howatson
- Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne, UK
- Water Research Group, School of Environmental Sciences and Development, Northwest University, Potchefstroom, South Africa
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Stander Z, Luies L, van Reenen M, Howatson G, Keane KM, Clifford T, Stevenson EJ, Loots DT. Beetroot juice - a suitable post-marathon metabolic recovery supplement? J Int Soc Sports Nutr 2021; 18:72. [PMID: 34861868 PMCID: PMC8642879 DOI: 10.1186/s12970-021-00468-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 10/28/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Red beetroot (Beta vulgaris L.) is a multifunctional functional food that reportedly exhibits potent anti-inflammatory, antioxidant, vasodilation, and cellular regulatory properties. This vegetable has gained a fair amount of scientific attention as a possible cost-effective supplement to enhance performance and expedite recovery after physical exercise. To date, no study has investigated the effects of incremental beetroot juice ingestion on the metabolic recovery of athletes after an endurance race. Considering this, as well as the beneficial glucose and insulin regulatory roles of beetroot, this study investigated the effects of beetroot juice supplementation on the metabolic recovery trend of athletes within 48 h after completing a marathon. METHODS By employing an untargeted two-dimensional gas chromatography time-of-flight mass spectrometry approach, serum samples (collected pre-, post-, 24 h post-, and 48 h post-marathon) of 31 marathon athletes that ingested a series (n = 7; 250 ml) of either beetroot juice (n = 15 athletes) or isocaloric placebo (n = 16 athletes) supplements within 48 h post-marathon, were analysed and statistically compared. RESULTS The metabolic profiles of the beetroot-ingesting cohort recovered to a pre-marathon-related state within 48 h post-marathon, mimicking the metabolic recovery trend observed in the placebo cohort. Since random inter-individual variation was observed immediately post-marathon, only metabolites with large practical significance (p-value ≤0.05 and d-value ≥0.5) within 24 h and 48 h post-marathon were considered representative of the effects of beetroot juice on metabolic recovery. These (n = 4) mainly included carbohydrates (arabitol and xylose) and odd-chain fatty acids (nonanoate and undecanoate). The majority of these were attributed to beetroot content and possible microbial fermentation thereof. CONCLUSION Apart from the global metabolic recovery trends of the two opposing cohorts, it appears that beetroot ingestion did not expedite metabolic recovery in athletes within 48 h post-marathon.
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Affiliation(s)
- Zinandré Stander
- Human Metabolomics, North-West University, Potchefstroom, 2531 South Africa
- North-West University, Potchefstroom Campus, Private Bag X6001, Box 269, Potchefstroom, 2520 South Africa
| | - Laneke Luies
- Human Metabolomics, North-West University, Potchefstroom, 2531 South Africa
| | - Mari van Reenen
- Human Metabolomics, North-West University, Potchefstroom, 2531 South Africa
| | - Glyn Howatson
- Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, NE1 8ST UK
- Water Research Group, School of Environmental Sciences and Development, North-West University, Potchefstroom, 2531 South Africa
| | - Karen M. Keane
- School of Science and computing, Department of Sport Exercise and Nutrition, Galway Mayo Institute of Technology, Galway, Republic of Ireland
| | - Tom Clifford
- Human Nutrition Research Centre, Faculty of Medicine, Newcastle University, Newcastle upon Tyne, England
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Emma J. Stevenson
- School of Science and computing, Department of Sport Exercise and Nutrition, Galway Mayo Institute of Technology, Galway, Republic of Ireland
| | - Du Toit Loots
- Human Metabolomics, North-West University, Potchefstroom, 2531 South Africa
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6
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Kimble R, Murray L, Keane KM, Haggerty K, Howatson G, Lodge JK. The influence of tart cherries ( Prunus Cerasus) on vascular function and the urinary metabolome: a randomised placebo-controlled pilot study. J Nutr Sci 2021; 10:e73. [PMID: 34589205 PMCID: PMC8453453 DOI: 10.1017/jns.2021.68] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 08/11/2021] [Accepted: 08/19/2021] [Indexed: 01/24/2023] Open
Abstract
Montmorency tart cherries (MC) have been found to modulate indices of vascular function with interventions of varying duration. The objective of this preliminary study was to identify the chronic effects of MC supplementation on vascular function and the potential for urinary metabolomics to provide mechanistic evidence. We performed a placebo-controlled, double-blind, randomised study on 23 healthy individuals (18M, 7F) that consumed 30 ml MC or a placebo twice daily for 28 days. Whole body measures of vascular function and spot urine collections were taken at baseline and after supplementation. There were no significant changes to vascular function including blood pressure and arterial stiffness. Urinary metabolite profiling highlighted significant changes (P < 0⋅001) with putative discriminatory metabolites related to tryptophan and histidine metabolism. Overall, MC supplementation for 28 days does not improve indices of vascular function but changes to the urinary metabolome could be suggestive of potential mechanisms.
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Affiliation(s)
- Rachel Kimble
- Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne, UK
| | - Lucy Murray
- Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne, UK
| | - Karen M. Keane
- Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne, UK
| | - Karen Haggerty
- Department of Applied Sciences, Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne, UK
| | - Glyn Howatson
- Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne, UK
| | - John K. Lodge
- Department of Applied Sciences, Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne, UK
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7
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Costello R, Keane KM, Lee BJ, Willems MET, Myers SD, Myers F, Lewis NA, Blacker SD. Plasma uptake of selected phenolic acids following New Zealand blackcurrant extract supplementation in humans. J Diet Suppl 2021; 19:672-688. [PMID: 33949254 DOI: 10.1080/19390211.2021.1914802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 10/21/2022]
Abstract
New Zealand blackcurrant (NZBC) extract is a rich source of anthocyanins and in order to exert physiological effects, the anthocyanin-derived metabolites need to be bioavailable in vivo. We examined the plasma uptake of selected phenolic acids following NZBC extract supplementation alongside maintaining a habitual diet (i.e. not restricting habitual polyphenol intake). Twenty healthy volunteers (nine females, age: 28 ± 7 years, height 1.73 ± 0.09 m, body mass 73 ± 11 kg) consumed a 300 mg NZBC extract capsule (CurraNZ®; anthocyanin content 105 mg) following an overnight fast. Venous blood samples were taken pre and 1, 1.5, 2, 3, 4, 5, and 6 h post-ingestion of the capsule. Reversed-phase high-performance liquid chromatography (HPLC) was used for analysis of two dihydroxybenzoic acids [i.e. vanillic acid (VA) and protocatechuic acid (PCA)] and one trihydroxybenzoic acid [i.e. gallic acid (GA)] in plasma following NZBC extract supplementation. Habitual anthocyanin intake was 168 (95%CI:68-404) mg⋅day-1 and no associations were observed between this and VA, PCA, and GA plasma uptake by the NZBC extract intake. Plasma time-concentration curves revealed that GA, and PCA were most abundant at 4, and 1.5 h post-ingestion, representing a 261% and 320% increase above baseline, respectively, with VA remaining unchanged. This is the first study to demonstrate that an NZBC extract supplement increases the plasma uptake of phenolic acids GA, and PCA even when a habitual diet is followed in the days preceding the experimental trial, although inter-individual variability is apparent.
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Affiliation(s)
- Rianne Costello
- Institute of Sport, University of Chichester, Chichester, UK.,Oxford Brookes Centre for Nutrition and Health, Oxford Brookes University, Oxford, UK
| | - Karen M Keane
- Galway-Mayo Institute of Technology, Galway, Ireland.,Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle Upon Tyne, UK
| | - Ben J Lee
- Institute of Sport, University of Chichester, Chichester, UK.,Centre for Sport, Exercise and Life Sciences, Coventry University, Coventry, UK
| | | | - Stephen D Myers
- Institute of Sport, University of Chichester, Chichester, UK
| | - Fiona Myers
- School of Biological Sciences, University of Portsmouth, Portsmouth, UK
| | | | - Sam D Blacker
- Institute of Sport, University of Chichester, Chichester, UK
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Kimble R, Keane KM, Lodge JK, Howatson G. The Influence of Tart Cherry ( Prunus cerasus, cv Montmorency) Concentrate Supplementation for 3 Months on Cardiometabolic Risk Factors in Middle-Aged Adults: A Randomised, Placebo-Controlled Trial. Nutrients 2021; 13:1417. [PMID: 33922493 PMCID: PMC8145763 DOI: 10.3390/nu13051417] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Tart Montmorency cherries (MC) have been shown to be rich in anthocyanins and other phytochemicals known to have anti-inflammatory properties and influence pathways that might improve cardiometabolic health. However, there is limited evidence for the longer-term use of tart cherries on these indices. The aim of the current study was to investigate the influence of MC concentrate on cardiometabolic health indices following a 3-month supplementation period. METHODS Fifty middle-aged adults (34 males and 16 females; mean ± SD age: 48 ± 6 years and BMI: 27.6 ± 3.7 kg/m2) completed a randomised, placebo-controlled parallel study in which they either received MC or an isocaloric placebo. Participants drank 30 mL of their allocated treatment twice per day for 3 months. Vascular function (blood pressure [BP], heart rate [HR], pulse wave velocity and analysis [PWV/A], and flow mediated dilation [FMD]) as well as indices of metabolic health (insulin, glucose, lipid profiles, and high sensitivity C reactive protein) were measured following an overnight fast before and after the 3 months. RESULTS No effect of the intervention between the groups was observed for vascular function or metabolic health variables following the intervention (p > 0.05). However, MC concentrate was shown to be safe and well-tolerated and, importantly, did not have any deleterious effects on these outcomes. In conclusion, MC has no influence on cardiometabolic indices in middle-aged adults.
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Affiliation(s)
- Rachel Kimble
- Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne NE1 8ST, UK; (R.K.); (J.K.L.)
| | - Karen M. Keane
- Galway-Mayo Institute of Technology, School of Science and Computing, H91 T8NW Galway, Ireland;
| | - John K. Lodge
- Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne NE1 8ST, UK; (R.K.); (J.K.L.)
| | - Glyn Howatson
- Faculty of Health and Life Sciences, Northumbria University, Newcastle-upon-Tyne NE1 8ST, UK; (R.K.); (J.K.L.)
- Water Research Group, School of Environmental Sciences and Development, Northwest University, Potchefstroom 2520, South Africa
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9
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Dolan E, Dumas A, Keane KM, Bestetti G, Freitas LHM, Gualano B, Kohrt W, Kelley GA, Pereira RMR, Sale C, Swinton P. The influence of acute exercise on bone biomarkers: protocol for a systematic review with meta-analysis. Syst Rev 2020; 9:291. [PMID: 33308281 PMCID: PMC7733242 DOI: 10.1186/s13643-020-01551-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 11/30/2020] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Bone is a plastic tissue that is responsive to its physical environment. As a result, exercise interventions represent a potential means to influence the bone. However, little is currently known about how various exercise and participant characteristics interact to influence bone metabolism. Acute, controlled, interventions provide an in vivo model through which the acute bone response to exercise can be investigated, typically by monitoring circulating bone biomarkers. Currently, substantial heterogeneity in factors such as study design, quality, exercise, and participant characteristics render it difficult to synthesize and evaluate the available evidence. Using a systematic review and meta-analytic approach, the aim of this investigation is to quantify the effect of an acute exercise bout on circulating bone biomarkers as well as examine the potential factors that may moderate this response, e.g., variation in participant, exercise, and sampling characteristics. METHODS This protocol was designed in accordance with the PRISMA-P guidelines. Seven databases (MEDLINE, Embase, Sport Discus, Cochrane CENTRAL, PEDro, LILACS, and Ibec) will be systematically searched and supplemented by a secondary screening of the reference lists of all included articles. The PICOS (Population, Intervention, Comparator, Outcomes and Study Design) approach was used to guide the determination of the eligibility criteria. Participants of any age, sex, training, or health status will be considered for inclusion. We will select studies that have measured the bone biomarker response before and after an acute exercise session. All biomarkers considered to represent the bone metabolism will be considered for inclusion, and sensitivity analyses will be conducted using reference biomarkers for the measurement of bone resorption and formation (namely β-CTX-1 and P1NP). Multi-level, meta-regression models within a Bayesian framework will be used to explore the main effect of acute exercise on bone biomarkers as well as potential moderating factors. The risk of bias for each individual study will be evaluated using a modified version of the Downs and Black checklist while certainty in resultant outcomes will be assessed using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. DISCUSSION A better understanding of the bone metabolic response to an acute bout of exercise has the potential to advance our understanding of the mechanisms through which this stimulus impacts bone metabolism, including factors that may moderate this response. Additionally, we will identify current gaps in the evidence base and provide recommendations to inform future research. SYSTEMATIC REVIEW REGISTRATION This protocol was prospectively registered in the Open Science Framework Registry ( https://osf.io/6f8dz ).
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Affiliation(s)
- E Dolan
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Faculdade de Medicina FMUSP, University of Sao Paulo, Sao Paulo, Brazil.
| | - A Dumas
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Faculdade de Medicina FMUSP, University of Sao Paulo, Sao Paulo, Brazil
| | - K M Keane
- Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, UK
| | - G Bestetti
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Faculdade de Medicina FMUSP, University of Sao Paulo, Sao Paulo, Brazil
| | - L H M Freitas
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Faculdade de Medicina FMUSP, University of Sao Paulo, Sao Paulo, Brazil
| | - B Gualano
- Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Faculdade de Medicina FMUSP, University of Sao Paulo, Sao Paulo, Brazil.,Food Research Centre, University of São Paulo, Sao Paulo, SP, Brazil
| | - W Kohrt
- Centre for Women's Health Research, School of Medicine, University of Colorado, Aurora, USA
| | - G A Kelley
- Department of Biostatistics, West Virginia University, Morgantown, USA
| | - R M R Pereira
- Bone Metabolism Laboratory, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - C Sale
- Musculoskeletal Physiology Research Group, Sport, Health and Performance Enhancement (SHAPE) Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - P Swinton
- School of Health Sciences, Robert Gordon University, Aberdeen, UK
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10
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Kwiecien SY, McHugh MP, Hicks KM, Keane KM, Howatson G. Prolonging the duration of cooling does not enhance recovery following a marathon. Scand J Med Sci Sports 2020; 31:21-29. [PMID: 32901996 DOI: 10.1111/sms.13822] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 04/20/2020] [Revised: 08/19/2020] [Accepted: 08/31/2020] [Indexed: 12/14/2022]
Abstract
Runners commonly utilize cryotherapy as part of their recovery strategy. Cryotherapy has been ineffective in mitigating signs and symptoms of muscle damage following marathon running and is limited by its duration of application. Phase change material (PCM) packs can prolong the duration of cooling. This study aimed to test the efficacy of prolonging the duration of cooling using PCM on perceptual recovery, neuromuscular function, and blood markers following a marathon run. Thirty participants completed a marathon run and were randomized to receive three hours of 15°C PCM treatment covering the quadriceps or recover without an intervention (control). Quadriceps soreness, strength, countermovement jump (CMJ) height, creatine kinase (CK), and high sensitivity C-reactive protein (hsCRP) were recorded at baseline, 24, 48, and 72 hours after the marathon. Following the marathon, strength decreased in both groups (P < .0001), with no difference between groups. Compared to baseline, strength was reduced 24 (P = .004) and 48 hours after the marathon (P = .008) in the control group, but only 24 hours (P = .028) in the PCM group. Soreness increased (P < .0001) and CMJ height decreased (P < .0001) in both groups, with no difference between groups. Compared to baseline, CMJ height was not reduced on any days in the PCM group but was reduced in the control group 24 (P < .0001) and 48 hours (P = .003) after the marathon. CK and hsCRP increased in both groups (P < .0001). Although the marathon run induced significant muscle damage, prolonging the duration of cooling using PCM did not accelerate the resolution of any dependent variables.
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Affiliation(s)
- Susan Y Kwiecien
- Nicholas Institute of Sports Medicine and Athletic Trauma, Lenox Hill Hospital, New York, NY, USA.,Department of Sport, Exercise & Rehabilitation, Northumbria University, Newcastle upon Tyne, UK
| | - Malachy P McHugh
- Nicholas Institute of Sports Medicine and Athletic Trauma, Lenox Hill Hospital, New York, NY, USA.,Department of Sport, Exercise & Rehabilitation, Northumbria University, Newcastle upon Tyne, UK
| | - Kirsty M Hicks
- Department of Sport, Exercise & Rehabilitation, Northumbria University, Newcastle upon Tyne, UK
| | - Karen M Keane
- Department of Sport, Exercise & Rehabilitation, Northumbria University, Newcastle upon Tyne, UK
| | - Glyn Howatson
- Department of Sport, Exercise & Rehabilitation, Northumbria University, Newcastle upon Tyne, UK.,Water Research Group, North West University, Potchefstroom, South Africa
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Kimble R, Murray L, Keane KM, Haggerty K, Howatson G, Lodge JK. Montmorency Tart Cherries Influence The Urinary Metabolome But Not Vascular Function In Healthy Individuals. Med Sci Sports Exerc 2020. [DOI: 10.1249/01.mss.0000687308.34690.30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Abstract
There is a dearth of information regarding the reliability of non-invasive measures of vascular function taken in a single testing session. This study aimed to determine the test-retest reliability of a test battery of vascular function measures: automated blood pressure (BP), laser Doppler imaging with iontophoresis (LDI), digital volume pulse (DVP), pulse wave velocity (PWV), augmentation index (AIx) measured by pulse wave analysis (PWA) and flow-mediated dilation (FMD) taken within and between sessions. Measures were taken in 21 non-smoking males intra-session and again inter-session (one week apart) to determine repeatability and reproducibility, respectively. There was moderate to excellent repeatability (ICC: 0.53-0.93; CV=2.2-18.1%) and reproducibility (ICC: 0.71-0.96; CV 1.9-14.2%) for BP, DVP stiffness index, PWV, AIx, AIx normalised to heart rate (75 bpm), absolute and percentage FMD. Repeatability of the DVP reflection index was moderate (ICC: 0.64; CV=9.5%) but there was poor reproducibility (ICC: 0.17; CV=15.1%). Moreover, the repeatability and reproducibility of the LDI measures ranged from poor to good (ICC: 0.31-0.84; CV=28.4-36.7%). These data indicated that there was considerable variability in the repeatability and reproducibility of measurements of endothelial function and arterial stiffness taken in a battery of measurements, which needs careful consideration in future research designs.
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Affiliation(s)
- Rachel Kimble
- Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, United Kingdom of Great Britain and Northern Ireland
| | - Karen M Keane
- Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, United Kingdom of Great Britain and Northern Ireland
| | - John K Lodge
- Applied Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom of Great Britain and Northern Ireland
| | - Glyn Howatson
- Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, United Kingdom of Great Britain and Northern Ireland
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Stander Z, Luies L, Mienie LJ, Keane KM, Howatson G, Clifford T, Stevenson EJ, Loots DT. The altered human serum metabolome induced by a marathon. Metabolomics 2018; 14:150. [PMID: 30830390 DOI: 10.1007/s11306-018-1447-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [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: 08/24/2018] [Accepted: 10/29/2018] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Endurance races have been associated with a substantial amount of adverse effects which could lead to chronic disease and long-term performance impairment. However, little is known about the holistic metabolic changes occurring within the serum metabolome of athletes after the completion of a marathon. OBJECTIVES Considering this, the aim of this study was to better characterize the acute metabolic changes induced by a marathon. METHODS Using an untargeted two dimensional gas chromatography time-of-flight mass spectrometry metabolomics approach, pre- and post-marathon serum samples of 31 athletes were analyzed and compared to identify those metabolites varying the most after the marathon perturbation. RESULTS Principle component analysis of the comparative groups indicated natural differentiation due to variation in the total metabolite profiles. Elevated concentrations of carbohydrates, fatty acids, tricarboxylic acid cycle intermediates, ketones and reduced concentrations of amino acids indicated a metabolic shift between various fuel substrate systems. Additionally, elevated odd-chain fatty acids and α-hydroxy acids indicated the utilization of α-oxidation and autophagy as alternative energy-producing mechanisms. Adaptations in gut microbe-associated markers were also observed and correlated with the metabolic flexibility of the athlete. CONCLUSION From these results it is evident that a marathon places immense strain on the energy-producing pathways of the athlete, leading to extensive protein degradation, oxidative stress, mammalian target of rapamycin complex 1 inhibition and autophagy. A better understanding of this metabolic shift could provide new insights for optimizing athletic performance, developing more efficient nutrition regimens and identify strategies to improve recovery.
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Affiliation(s)
- Zinandré Stander
- Human Metabolomics, North-West University, Private Bag X6001, Box 269, Potchefstroom, 2531, South Africa
| | - Laneke Luies
- Human Metabolomics, North-West University, Private Bag X6001, Box 269, Potchefstroom, 2531, South Africa
- SAMRC/NHLS/UCT Molecular Mycobacteriology Research Unit, Institute of Infectious Disease and Molecular Medicine, Division of Medical Microbiology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Rondebosch, 7700, South Africa
| | - Lodewyk J Mienie
- Human Metabolomics, North-West University, Private Bag X6001, Box 269, Potchefstroom, 2531, South Africa
| | - Karen M Keane
- Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, NE1 8ST, Newcastle upon Tyne, UK
| | - Glyn Howatson
- Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, NE1 8ST, Newcastle upon Tyne, UK
- Water Research Group, School of Environmental Sciences and Development, North-West University, Potchefstroom, 2531, South Africa
| | - Tom Clifford
- Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, NE1 8ST, Newcastle upon Tyne, UK
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Emma J Stevenson
- Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Du Toit Loots
- Human Metabolomics, North-West University, Private Bag X6001, Box 269, Potchefstroom, 2531, South Africa.
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Kimble R, Keane KM, Lodge JK, Howatson G. Dietary intake of anthocyanins and risk of cardiovascular disease: A systematic review and meta-analysis of prospective cohort studies. Crit Rev Food Sci Nutr 2018; 59:3032-3043. [PMID: 30277799 DOI: 10.1080/10408398.2018.1509835] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [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: 12/19/2022]
Abstract
Accumulating evidence suggests flavonoid intake is associated with reduced risk of non-communicable diseases. We aimed to systematically determine and quantify the potential association between dietary anthocyanin intake and risk of cardiovascular diseases (CVD). A systematic literature search of studies reporting anthocyanin intake and risk of fatal or nonfatal CVD was performed using SCOPUS, MEDLINE, CINAHL and Cochrane Library. The relative risk (RR) or hazard ratio (HR) of highest category of anthocyanin foods were pooled in a random-effects meta-analysis. Subgroup analysis were conducted to determine possible sources of heterogeneity. The meta-analysis suggested intake of dietary anthocyanins and reduced risk of CHD (RR = 0.91, 95% CI: 0.83, 0.99; I2 = 12.0, Ph = 0.337) and CVD mortality (RR = 0.92, 95% CI: 0.87, 0.97; I2 = 0.0, Ph = 0.584). However, there was no relationship between the intake of these compounds and reduced risk of MI, stroke or total CVD. Subgroup analysis determined reduced risk of CHD and CVD mortality was more prominent for anthocyanidin intake, as opposed to anthocyanin or berries. Our systematic review and meta-analysis provides evidence that anthocyanins, specifically anthocyanidins, reduce the risk of CHD and CVD mortality. Further randomized controlled trials on anthocyanin intake and CVD risk factors are needed to support these findings.
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Affiliation(s)
- Rachel Kimble
- Department of Sport Exercise and Rehabilitation Faculty of Health and Life Sciences, Northumbria University , Newcastle-upon-Tyne , UK
| | - Karen M Keane
- Department of Sport Exercise and Rehabilitation Faculty of Health and Life Sciences, Northumbria University , Newcastle-upon-Tyne , UK
| | - John K Lodge
- Department of Applied Sciences Faculty of Health and Life Sciences, Northumbria University , Newcastle-upon-Tyne , UK
| | - Glyn Howatson
- Department of Sport Exercise and Rehabilitation Faculty of Health and Life Sciences, Northumbria University , Newcastle-upon-Tyne , UK.,Water Research Group, School of Environmental Sciences and Development, Northwest University , Potchefstroom , South Africa
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15
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Keane KM, Bailey SJ, Vanhatalo A, Jones AM, Howatson G. Effects Of Montmorency Tart Cherry (L. Prunus Cerasus) Consumption On Nitric Oxide Biomarkers And Exercise Performance. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000538373.09813.39] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Keane KM, Bailey SJ, Vanhatalo A, Jones AM, Howatson G. Effects of montmorency tart cherry (L. Prunus Cerasus) consumption on nitric oxide biomarkers and exercise performance. Scand J Med Sci Sports 2018; 28:1746-1756. [PMID: 29566443 DOI: 10.1111/sms.13088] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2018] [Indexed: 12/20/2022]
Abstract
The purpose of this study was to investigate the effects of Montmorency tart cherry juice (MC) on nitric oxide (NO) biomarkers, vascular function, and exercise performance. In a randomized, double-blind, placebo (PLA)-controlled, crossover study, 10 trained cyclists (mean ± SD; V˙O2peak 59.0 ± 7.0 mL/kg/min) acutely ingested 30 mL of either MC or PLA following dietary restrictions of polyphenol-rich compounds and completed 6-minutes moderate- and severe-intensity cycling bouts 1.5 hour post-ingestion on 2 occasions for each experimental condition. The severe-intensity cycling test was continued to exhaustion on 1 occasion and immediately followed by a 60-seconds all-out sprint on the other occasion. Blood pressure, pulse wave measures, tissue oxygenation index, and plasma nitrite concentration were assessed pre- and 1.5 hour post-ingestion. Time to exhaustion was not different between conditions (P > .05), but peak power over the first 20 seconds (363 ± 42 vs 330 ± 26 W) and total work completed during the 60-seconds all-out sprint (21 ± 3 vs 19 ± 3 kJ) were 10% higher in the MC trial compared to the PLA trial (P < .05). Systolic blood pressure was 5 ± 2 mm Hg lower 1.5 hour post-MC supplementation compared to PLA supplementation (P < .05). There were no differences in pulse wave measures, plasma nitrite concentration, or tissue oxygenation between the MC and PLA trials (P > .05). These results suggest that acute supplementation with MC can lower blood pressure and improve some aspects of exercise performance, specifically end-sprint performance, in trained cyclists.
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Affiliation(s)
- K M Keane
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
| | - S J Bailey
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - A Vanhatalo
- Sport and Health Sciences, St. Luke's Campus, University of Exeter, Exeter, UK
| | - A M Jones
- Sport and Health Sciences, St. Luke's Campus, University of Exeter, Exeter, UK
| | - G Howatson
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK.,Water Research Group, School of Environmental Sciences and Development, Northwest University, Potchefstroom, South Africa
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Keane KM, Haskell-Ramsay CF, Veasey RC, Howatson G. Tart Montmorency Cherries (prunus Cerasus L.) Acutely Modulate Vascular Function In The Absence Of Improvements In Cognition. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000516987.46506.60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Clifford T, Allerton D, Brown M, Harper L, Horsburgh S, Keane KM, Stevenson EJ, Howatson G. Muscle Damage and Inflammation Following a Marathon. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000519549.44129.f6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Clifford T, Allerton DM, Brown MA, Harper L, Horsburgh S, Keane KM, Stevenson EJ, Howatson G. Minimal muscle damage after a marathon and no influence of beetroot juice on inflammation and recovery. Appl Physiol Nutr Metab 2016; 42:263-270. [PMID: 28165768 DOI: 10.1139/apnm-2016-0525] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [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: 12/24/2022]
Abstract
This study examined whether beetroot juice (BTJ) would attenuate inflammation and muscle damage following a marathon. Using a double blind, independent group design, 34 runners (each having completed ca. ∼16 previous marathons) consumed either BTJ or an isocaloric placebo (PLA) for 3 days following a marathon. Maximal isometric voluntary contractions (MIVC), countermovement jumps (CMJ), muscle soreness, serum cytokines, leucocytosis, creatine kinase (CK), high sensitivity C-reactive protein (hs-CRP), and aspartate aminotransferase (AST) were measured pre, post, and 2 days after the marathon. CMJ and MIVC were reduced after the marathon (P < 0.05), but no group differences were observed (P > 0.05). Muscle soreness was increased in the day after the marathon (BTJ; 45 ± 48 vs. PLA; 46 ± 39 mm) and had returned to baseline by day 2, irrespective of supplementation (P = 0.694). Cytokines (interleukin-6; IL-6, interleukin-8, tumour necrosis factor-α) were increased immediately post-marathon but apart from IL-6 had returned to baseline values by day 1 post. No interaction effects were evident for IL-6 (P = 0.213). Leucocytes increased 1.7-fold after the race and remained elevated 2 days post, irrespective of supplement (P < 0.0001). CK peaked at 1 day post marathon (BTJ: 965 ± 967, and PLA: 1141 ± 979 IU·L-1) and like AST and hs-CRP, was still elevated 2 days after the marathon (P < 0.05); however, no group differences were present for these variables. Beetroot juice did not attenuate inflammation or reduce muscle damage following a marathon, possibly because most of these indices were not markedly different from baseline values in the days after the marathon.
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Affiliation(s)
- Tom Clifford
- a Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle NE1 8ST, UK
| | - Dean M Allerton
- a Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle NE1 8ST, UK
| | - Meghan A Brown
- a Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle NE1 8ST, UK
| | - Liam Harper
- a Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle NE1 8ST, UK
| | - Steven Horsburgh
- a Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle NE1 8ST, UK
| | - Karen M Keane
- a Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle NE1 8ST, UK
| | - Emma J Stevenson
- b Human Nutrition Research Centre, Institute of Cellular Medicine, Newcastle University, Newcastle NE1 7RU, UK
| | - Glyn Howatson
- a Faculty of Health and Life Sciences, Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle NE1 8ST, UK.,c Water Research Group, School of Environmental Sciences and Development, Northwest University, Potchefstroom 2520, South Africa
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21
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Keane KM, Salicki R, Goodall S, Thomas K, Howatson G. Muscle Damage Response in Female Collegiate Athletes After Repeated Sprint Activity. J Strength Cond Res 2016; 29:2802-7. [PMID: 25853920 DOI: 10.1519/jsc.0000000000000961] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Exercise-induced muscle damage (EIMD) is a well-investigated area, however there is a paucity of data surrounding the damage response in females. The aim of this study was to examine the damage responses from a sport-specific bout of repeated sprints in female athletes. Eleven well-trained females (mean ± SD; age: 22 ± 3 years; height: 166.6 ± 5.7 cm; mass: 62.7 ± 4.5 kg) in the luteal phase of the menstrual cycle completed a repeated sprint protocol designed to induce EIMD (15 × 30 m sprints). Creatine kinase, countermovement jump height, knee extensor maximal voluntary isometric contraction (MVIC) force, delayed onset muscle soreness (DOMS), 30-m sprint time, and limb girth were recorded before, after, 24, 48, and 72 hours after exercise. Creatine kinase was elevated at 24, 48, and 72 hours (p ≤ 0.05), peaking at 24 hours (+418%) and returning toward baseline at 72 hours. Countermovement jump height was reduced immediately after, 24, and 48 hours (p ≤ 0.05). Sprint performance was also negatively affected immediately after, 24, 48, and 72 hours after exercise. Muscle soreness peaked at 48 hours (p < 0.01) and remained significantly elevated at 72 hours after exercise (p < 0.01). Limb girth and MVIC did not alter over time. This study provides new information on the EIMD response in trained females after a sport-specific bout of repeated sprints. Importantly, this damage response has the potential to negatively affect performance for several days after exercise.
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Affiliation(s)
- Karen M Keane
- 1Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle, United Kingdom; and 2Water Research Group, School of Environmental Sciences and Development, Northwest University, Potchefstroom, South Africa
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Keane KM, George TW, Constantinou CL, Brown MA, Clifford T, Howatson G. Effects of Montmorency tart cherry (Prunus Cerasus L.) consumption on vascular function in men with early hypertension. Am J Clin Nutr 2016; 103:1531-9. [PMID: 27146650 DOI: 10.3945/ajcn.115.123869] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [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: 09/18/2015] [Accepted: 03/31/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Tart cherries contain numerous polyphenolic compounds that could potentially improve endothelial function and reduce cardiovascular disease risk. OBJECTIVE We sought to examine the acute effects of Montmorency tart cherry (MC) juice on vascular function in subjects with early hypertension. DESIGN A placebo-controlled, blinded, crossover, randomized Latin square design study with a washout period of ≥14 d was conducted. Fifteen men with early hypertension [systolic blood pressure (SBP) ≥130 mm Hg, diastolic blood pressure ≥80 mm Hg, or both] received either a 60-mL dose of MC concentrate or placebo. Microvascular reactivity (laser Doppler imaging with iontophoresis), arterial stiffness (pulse wave velocity and analysis), blood pressure, and phenolic acid absorption were assessed at baseline and at 1, 2, 3, 5, and 8 h postconsumption. RESULTS MC consumption significantly lowered SBP (P < 0.05) over a period of 3 h, with peak reductions of mean ± SEM 7 ± 3 mm Hg 2 h after MC consumption relative to the placebo. Improvements in cardiovascular disease risk factors were closely linked to increases in circulating protocatechuic and vanillic acid at 1-2 h. CONCLUSIONS MC intake acutely reduces SBP in men with early hypertension. These benefits may be mechanistically linked to the actions of circulating phenolic acids. This study provides information on a new application of MCs in health maintenance, particularly in positively modulating SBP. This trial was registered at clinicaltrials.gov as NCT02234648.
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Affiliation(s)
- Karen M Keane
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom; and
| | - Trevor W George
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom; and
| | - Costas L Constantinou
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom; and
| | - Meghan A Brown
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom; and
| | - Tom Clifford
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom; and
| | - Glyn Howatson
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom; and Water Research Group, School of Environmental Sciences and Development, Northwest University, Potchefstroom, South Africa
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Keane KM, George TW, Constantinou CL, Brown MA, Clifford T, Howatson G. Effects Of Montmorency Tart Cherry (Prunus Cerasus L.) Consumption On Vascular Function In Males With Early Hypertension. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000487513.24999.bb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
The ICE family of cysteine proteases mediates necrotic or apoptotic events in the nervous system as well as in other tissues. This suggests that inhibitors may be of therapeutic value in acute and, perhaps, chronic neurodegenerative disease. In addition, some members of this family may respond to intercellular signals controlling proliferation or differentiation. This possibility should be kept in mind as therapeutics are pursued.
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Affiliation(s)
- B D Shivers
- Parke-Davis Pharmaceutical Research Division, Warner-Lambert Company, Ann Arbor, Michigan 48105, USA.
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25
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Abstract
The interleukin-1 beta converting enzyme (ICE) family of cysteine proteases has been implicated in apoptosis. This study tested the effects of a novel pan-ICE family inhibitor, bocaspartyl(OMe)-fluoromethylketone (boc-Asp-CH2F), against low potassium-induced apoptosis of cultured rat cerebellar granule neurons (CGN). A single application of this cell-permeant compound (20 microM) inhibited apoptotic cell death up to 48 h. Classical apoptotic changes were monitored by fluorescence microscopy, DNA fragmentation and scanning electron microscopy (SEM). A control peptidic fluoromethylketone (boc-Thr-CH2F), and inhibitors to calpain (Ac-Leu-Leu-norleucinal), cathepsin B (Z-Phe-Ala-CH2F), and CPP32-like proteases (Z-DEVD-CH2F), failed to prevent apoptotic death. An 35S-methionine incorporation assay verified that, unlike cycloheximide, boc-Asp-CH2F did not inhibit protein synthesis, hence excluding this as a rescuing mechanism. Although ICE was not detected by northern blot analysis, both CPP32 and Nedd2 expression were found to increase during apoptosis. Kinetic assays with cell extracts from boc-Asp-CH2F-treated neurons measured reduced rates of cleavage for DEVD-pNA and LEVD-pNA. At present, ICE-like proteases remain viable candidates for mediating neuronal death.
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Affiliation(s)
- T Lynch
- Department of Neurology, University of Michigan, Ann Arbor 48109, USA
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26
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Vasilakos JP, Ghayur T, Carroll RT, Giegel DA, Saunders JM, Quintal L, Keane KM, Shivers BD. IL-1 beta converting enzyme (ICE) is not required for apoptosis induced by lymphokine deprivation in an IL-2-dependent T cell line. The Journal of Immunology 1995. [DOI: 10.4049/jimmunol.155.7.3433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Clonal T cells undergo programmed cell death (PCD) or apoptosis when cultured without the appropriate cytokines. The cysteine protease, IL-1 beta converting enzyme (ICE), is implicated in apoptosis based on its structural similarity to the PCD gene, ced-3, in Caenorhabditis elegans and the induction of PCD in fibroblasts transfected with recombinant ICE. We show that the murine IL-2-dependent CTLL T cell line expresses ICE but not IL-1 beta. Interestingly, ICE mRNA and protein levels increase during apoptosis. Yet inhibition of ICE enzymatic activity (> 90%) with either of two cell-permeable ICE inhibitors does not abrogate or delay apoptosis following IL-2 deprivation, as measured by DNA fragmentation and viability. Our results suggest that ICE is not required for apoptosis in lymphokine-deprived T cells.
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Affiliation(s)
- J P Vasilakos
- Neuroscience Therapeutics, Parke-Davis Pharmaceutical Research Company, Ann Arbor, MI 48105, USA
| | - T Ghayur
- Neuroscience Therapeutics, Parke-Davis Pharmaceutical Research Company, Ann Arbor, MI 48105, USA
| | - R T Carroll
- Neuroscience Therapeutics, Parke-Davis Pharmaceutical Research Company, Ann Arbor, MI 48105, USA
| | - D A Giegel
- Neuroscience Therapeutics, Parke-Davis Pharmaceutical Research Company, Ann Arbor, MI 48105, USA
| | - J M Saunders
- Neuroscience Therapeutics, Parke-Davis Pharmaceutical Research Company, Ann Arbor, MI 48105, USA
| | - L Quintal
- Neuroscience Therapeutics, Parke-Davis Pharmaceutical Research Company, Ann Arbor, MI 48105, USA
| | - K M Keane
- Neuroscience Therapeutics, Parke-Davis Pharmaceutical Research Company, Ann Arbor, MI 48105, USA
| | - B D Shivers
- Neuroscience Therapeutics, Parke-Davis Pharmaceutical Research Company, Ann Arbor, MI 48105, USA
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27
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Vasilakos JP, Ghayur T, Carroll RT, Giegel DA, Saunders JM, Quintal L, Keane KM, Shivers BD. IL-1 beta converting enzyme (ICE) is not required for apoptosis induced by lymphokine deprivation in an IL-2-dependent T cell line. J Immunol 1995; 155:3433-42. [PMID: 7561038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Clonal T cells undergo programmed cell death (PCD) or apoptosis when cultured without the appropriate cytokines. The cysteine protease, IL-1 beta converting enzyme (ICE), is implicated in apoptosis based on its structural similarity to the PCD gene, ced-3, in Caenorhabditis elegans and the induction of PCD in fibroblasts transfected with recombinant ICE. We show that the murine IL-2-dependent CTLL T cell line expresses ICE but not IL-1 beta. Interestingly, ICE mRNA and protein levels increase during apoptosis. Yet inhibition of ICE enzymatic activity (> 90%) with either of two cell-permeable ICE inhibitors does not abrogate or delay apoptosis following IL-2 deprivation, as measured by DNA fragmentation and viability. Our results suggest that ICE is not required for apoptosis in lymphokine-deprived T cells.
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Affiliation(s)
- J P Vasilakos
- Neuroscience Therapeutics, Parke-Davis Pharmaceutical Research Company, Ann Arbor, MI 48105, USA
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28
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Abstract
Using oligomer primers based on the cDNA sequence of human interleukin 1 beta converting enzyme (ICE), we have employed the RT-PCR method and rat spleen RNA to clone and sequence rat ICE. We report here that the predicted amino acid sequence of rat ICE proenzyme consists of 402 amino acids (p45) and shares 61% and 90% identity, respectively, with human and mouse ICE amino acid sequences. The active site cysteine (Cys284) and 3 or 3 potential processing sites are conserved suggesting that their the rat ICE heterodimer consists of a p22 (Ser104-Asp296) and a p10 (Gly315-His402) subunit or a cryptic processing site creates a smaller heterodimer. Northern blot analysis has revealed a approximately 2.2 kb and a more abundant approximately 1.45 kb ICE transcript both widely expressed in the rat with the highest expression in spleen and intestine and lowest in brain. IL-1 beta mRNA was similarly distributed. Injection of the immunostimulant, lipopolysaccharide (0.2 mg/kg, i.p.), increased rICE mRNA content between 2- to 3-fold in the rat brain with smaller increases measured in testis and spleen. The structural conservation of this enzyme suggests that rat models of inflammation will be useful for evaluating the therapeutic potential of ICE inhibitors in humans.
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Affiliation(s)
- K M Keane
- Department of Neuroscience Pharmacology, Parke-Davis Pharmaceutical Research, Division of Warner-Lambert Co., Ann Arbor, MI 48105, USA
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Tavakkol A, Elder JT, Griffiths CE, Cooper KD, Talwar H, Fisher GJ, Keane KM, Foltin SK, Voorhees JJ. Expression of growth hormone receptor, insulin-like growth factor 1 (IGF-1) and IGF-1 receptor mRNA and proteins in human skin. J Invest Dermatol 1992; 99:343-9. [PMID: 1324963 DOI: 10.1111/1523-1747.ep12616668] [Citation(s) in RCA: 152] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A cDNA corresponding to the membrane receptor for growth hormone (GH) was amplified by polymerase chain reaction (PCR) directly from human skin. The cDNA was cloned and found to have complete sequence homology to the extracellular domain of human liver GH receptor (GH-R). Northern analysis, using the cloned GH-R as probe, revealed relatively higher levels of GH-R transcripts in cultured human dermal fibroblasts compared to cultured keratinocytes or keratome biopsies. Semi-quantitative PCR analysis indicated that the level of GH-R mRNA in cultured melanocytes was similar to that in fibroblasts. The receptor protein encoded by GH-R mRNA in fibroblasts was shown by affinity cross-linking to have an apparent M(r) of 115-120 kDa, similar to that of 3T3-F442A fibroblasts used as a control. mRNA transcripts for the major mediator of GH actions, insulin-like growth factor 1 (IGF-1), were detected by PCR in fibroblasts, melanocytes, and keratome biopsies, but not in keratinocytes. In contrast, IGF-1 receptor mRNA were abundant in cultured keratinocytes and skin biopsies, as determined by Northern analysis. IGF-1 but not GH (5-50 ng/ml) promoted clonal proliferation of cultured keratinocytes. In contrast, GH (10 ng/ml) after 5 d markedly increased fibroblast cell numbers (70%, p less than 0.009) over 0.2% serum control. These data indicate that human skin cells possess the molecular elements necessary to respond to GH and raise the possibility that GH may influence skin growth in vivo.
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Affiliation(s)
- A Tavakkol
- Department of Dermatology, University of Michigan Medical School, Ann Arbor
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Tavakkol A, Griffiths CE, Keane KM, Palmer RD, Voorhees JJ. Cellular localization of mRNA for cellular retinoic acid-binding protein II and nuclear retinoic acid receptor-gamma 1 in retinoic acid-treated human skin. J Invest Dermatol 1992; 99:146-50. [PMID: 1378478 DOI: 10.1111/1523-1747.ep12616781] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We have previously shown that cellular retinoic acid-binding protein II (CRABP-II), but not cellular retinoic acid-binding protein I (CRABP-I), mRNA expression is markedly induced in human skin by topical retinoic acid. In the present study, we have investigated the pattern of expression of CRABP-II transcripts in 4-d RA-treated human skin by non-radioactive in situ hybridization (n = 5) and Northern analysis (n = 4). RA induced accumulation of CRABP-II transcripts throughout the epidermis, dermal fibroblasts, and endothelial cells as determined by in situ hybridization. In skin treated with vehicle, a faint hybridization signal was observed only in basal layers of the epidermis consistent with low-level expression of CRABP-II mRNA. RA-mediated accumulation of CRABP-II transcripts in skin was also confirmed by Northern analysis. Neither RA nor vehicle induced significant changes in nuclear RA receptor-gamma 1 or keratin 5 gene expression in skin as determined by in situ or Northern hybridization. These results indicate that RA-induced CRABP-II mRNA accumulation is primarily localized to spinous and granular layers in epidermis, and in superficial dermis.
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Affiliation(s)
- A Tavakkol
- Department of Dermatology, University of Michigan Medical Center, Ann Arbor 48109-0528
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