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Jiménez-Garduño A, Ramirez-Soto I, Miranda-Rodríguez I, Gitler S, Ortega A. SERCA-1 conformational change exerted by the Ca 2+-channel blocker diltiazem affects mammalian skeletal muscle function. Cell Calcium 2024; 119:102852. [PMID: 38412581 DOI: 10.1016/j.ceca.2024.102852] [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: 11/07/2023] [Revised: 01/26/2024] [Accepted: 01/27/2024] [Indexed: 02/29/2024]
Abstract
In skeletal muscle (SM), inward Ca2+-currents have no apparent role in excitation-contraction coupling (e-c coupling), however the Ca2+-channel blocker can affect twitch and tetanic muscle in mammalian SM. Experiments were conducted to study how diltiazem (DLZ) facilitates e-c coupling and inhibits contraction. 1) In complete Extensor Digitorum Longus (EDL) muscle and single intact fibres, 0.03 mM DLZ causes twitch potentiation and decreases force during tetanic activity, with increased fatigue. 2) In split open fibres isolated from EDL fibres, DLZ inhibits sarcoplasmic reticulum (SR) Ca2+-loading in a dose-dependent manner and has a potentiating effect on caffeine-induced SR Ca2+-release. 3) In isolated light SR (LSR) vesicles, SERCA1 hydrolytic activity is not affected by DLZ up to 0.2 mM. However, ATP-dependent Ca2+-uptake was inhibited in a dose-dependent manner at a concentration where e-c coupling is changed. 4) The passive Ca2+-efflux from LSR was reduced by half with 0.03 mM diltiazem, indicating that SR leaking does not account for the decreased Ca2+-uptake. 5) The denaturation profile of the SERCA Ca2+-binding domain has lower thermal stability in the presence of DLZ in a concentration-dependent manner, having no effect on the nucleotide-binding domain. We conclude that the effect of DLZ on SM is exerted by crossing the sarcolemma and interacting directly with the SERCA Ca2+-binding domain, affecting SR Ca2+-loading during relaxation, which has a consequence on SM contractility. Diltiazem effect on SM could be utilized as a tool to understand SM e-c coupling and muscle fatigue.
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Affiliation(s)
- Aura Jiménez-Garduño
- Department of Biochemistry, Facultad de Medicina, School of Medicine, Universidad Nacional Autónoma de México, México City, Mexico; Department of Health Sciences, Universidad de las Américas Puebla, San Andrés Cholula, Puebla, Mexico
| | - Ibrahim Ramirez-Soto
- Department of Biochemistry, Facultad de Medicina, School of Medicine, Universidad Nacional Autónoma de México, México City, Mexico; Department of Kinesiology and Health Sciences, University of Waterloo, Ontario, Canada
| | - Ileana Miranda-Rodríguez
- Department of Biochemistry, Facultad de Medicina, School of Medicine, Universidad Nacional Autónoma de México, México City, Mexico
| | - Sofía Gitler
- Department of Biochemistry, Facultad de Medicina, School of Medicine, Universidad Nacional Autónoma de México, México City, Mexico; Department of Internal Medicine, ABC Medical Center, Sur 136 166, Las Américas, Alvaro Obregon, 0112, Mexico City
| | - Alicia Ortega
- Department of Biochemistry, Facultad de Medicina, School of Medicine, Universidad Nacional Autónoma de México, México City, Mexico.
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de Souza RF, de Matos DG, Lopes Dos Santos J, Andrade Lima C, Reis Pires Ferreira A, Moreno G, Santos Oliveira A, Dutra Pereira D, Knechtle B, Aidar FJ. Effects of ibuprofen during 42-km trail running on oxidative stress, muscle fatigue, muscle damage and performance: a randomized controlled trial. Res Sports Med 2024; 32:400-410. [PMID: 36154349 DOI: 10.1080/15438627.2022.2122826] [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: 10/14/2022]
Abstract
Up to 75% of marathon runners ingest non-steroidal anti-inflammatory drugs (NSAIDs) during competition. Despite the doubt whether or not they contribute to performance, the effect of NSAID in endurance sports is unclear. We evaluated the effect of ibuprofen (IBU) use on oxidative stress, muscle damage, physical performance, and vertical jump of runners participating in a 42-km-trail running. The sample consisted of 12 men randomly divided into 2 groups: a placebo group (placebo) and an ibuprofen group (IBG). A 400-mg IBU capsule was administered to the IBG 15 min prior to the start of the trial and during the course after 5 h. In the intergroup analysis, placebo 70.1% increase (p < 0.0001; Cohen's d = 4.77) of the thiobarbituric acid reactive substances (TBARS); the IBG exhibited a 31.46% increase of the sulphhydryl groups (SH) (p = 0.024, Cohen's d = 0.27), 55% of squat jump (SJ) (p < 0.01; Cohen's d = 1.41) with no significant effect on creatine kinase (CK), pace, speed, and finish time. In summary, IBU had positive evidence on oxidative stress and muscle fatigue, but had no effect on physical performance and muscle damage.
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Affiliation(s)
- Raphael Fabricio de Souza
- Department of Physical Education, Federal University of Sergipe - UFS, Sergipe, Brazil
- Group of Studies and Research of Performance, Sport, Health and Paralympic Sports - GEPEPS, the Federal University of Sergipe - UFS, Sergipe, Brazil
- Graduate Program in Master's level in Physical Education, Federal University of Sergipe - UFS, Sergipe, Brazil
| | - Dihogo Gama de Matos
- Group of Studies and Research of Performance, Sport, Health and Paralympic Sports - GEPEPS, the Federal University of Sergipe - UFS, Sergipe, Brazil
| | - Jymmys Lopes Dos Santos
- Department of Physical Education, Federal University of Sergipe - UFS, Sergipe, Brazil
- Department of Physiology and Pharmacology, Center of Biosciences, Federal University of Pernambuco, Recife, Brazil
| | - Clésio Andrade Lima
- Department of Physical Education, Federal University of Sergipe - UFS, Sergipe, Brazil
| | - Alexandre Reis Pires Ferreira
- Department of Physical Education, Federal University of Sergipe - UFS, Sergipe, Brazil
- Group of Studies and Research of Performance, Sport, Health and Paralympic Sports - GEPEPS, the Federal University of Sergipe - UFS, Sergipe, Brazil
| | - Giselle Moreno
- Department of Physiology and Pharmacology, Center of Biosciences, Federal University of Pernambuco, Recife, Brazil
| | - Alan Santos Oliveira
- Department of Physiology and Pharmacology Inflammatory Process, Federal University of Sergipe-UFS, Sergipe, Brazil
| | - Danielle Dutra Pereira
- Department of Physiology and Pharmacology, Center of Biosciences, Federal University of Pernambuco, Recife, Brazil
| | - Beat Knechtle
- Institute of Primary Care, University of Zurich, Zurich, Switzerland
| | - Felipe J Aidar
- Department of Physical Education, Federal University of Sergipe - UFS, Sergipe, Brazil
- Group of Studies and Research of Performance, Sport, Health and Paralympic Sports - GEPEPS, the Federal University of Sergipe - UFS, Sergipe, Brazil
- Graduate Program in Master's level in Physical Education, Federal University of Sergipe - UFS, Sergipe, Brazil
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Yasar MN, Sica M, O'Flynn B, Tedesco S, Menolotto M. A dataset for fatigue estimation during shoulder internal and external rotation movements using wearables. Sci Data 2024; 11:433. [PMID: 38678019 PMCID: PMC11055894 DOI: 10.1038/s41597-024-03254-8] [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: 10/23/2023] [Accepted: 04/11/2024] [Indexed: 04/29/2024] Open
Abstract
Wearable sensors have recently been extensively used in sports science, physical rehabilitation, and industry providing feedback on physical fatigue. Information obtained from wearable sensors can be analyzed by predictive analytics methods, such as machine learning algorithms, to determine fatigue during shoulder joint movements, which have complex biomechanics. The presented dataset aims to provide data collected via wearable sensors during a fatigue protocol involving dynamic shoulder internal rotation (IR) and external rotation (ER) movements. Thirty-four healthy subjects performed shoulder IR and ER movements with different percentages of maximal voluntary isometric contraction (MVIC) force until they reached the maximal exertion. The dataset includes demographic information, anthropometric measurements, MVIC force measurements, and digital data captured via surface electromyography, inertial measurement unit, and photoplethysmography, as well as self-reported assessments using the Borg rating scale of perceived exertion and the Karolinska sleepiness scale. This comprehensive dataset provides valuable insights into physical fatigue assessment, allowing the development of fatigue detection/prediction algorithms and the study of human biomechanical characteristics during shoulder movements within a fatigue protocol.
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Affiliation(s)
- Merve Nur Yasar
- Tyndall National Institute, University College Cork, Cork, T12 R5CP, Ireland.
| | - Marco Sica
- Tyndall National Institute, University College Cork, Cork, T12 R5CP, Ireland.
| | - Brendan O'Flynn
- Tyndall National Institute, University College Cork, Cork, T12 R5CP, Ireland
| | - Salvatore Tedesco
- Tyndall National Institute, University College Cork, Cork, T12 R5CP, Ireland
| | - Matteo Menolotto
- Tyndall National Institute, University College Cork, Cork, T12 R5CP, Ireland
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Zhang W, Bai Z, Yan P, Liu H, Shao L. Recognition of Human Lower Limb Motion and Muscle Fatigue Status Using a Wearable FES-sEMG System. Sensors (Basel) 2024; 24:2377. [PMID: 38610589 PMCID: PMC11014134 DOI: 10.3390/s24072377] [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] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/30/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024]
Abstract
Functional electrical stimulation (FES) devices are widely employed for clinical treatment, rehabilitation, and sports training. However, existing FES devices are inadequate in terms of wearability and cannot recognize a user's intention to move or muscle fatigue. These issues impede the user's ability to incorporate FES devices into their daily life. In response to these issues, this paper introduces a novel wearable FES system based on customized textile electrodes. The system is driven by surface electromyography (sEMG) movement intention. A parallel structured deep learning model based on a wearable FES device is used, which enables the identification of both the type of motion and muscle fatigue status without being affected by electrical stimulation. Five subjects took part in an experiment to test the proposed system, and the results showed that our method achieved a high level of accuracy for lower limb motion recognition and muscle fatigue status detection. The preliminary results presented here prove the effectiveness of the novel wearable FES system in terms of recognizing lower limb motions and muscle fatigue status.
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Affiliation(s)
| | - Ziqian Bai
- School of System Design and Intelligent Manufacturing, Southern University of Science and Technology, Shenzhen 518055, China (P.Y.); (L.S.)
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5
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Jacquet T, Poulin-Charronnat B, Bard P, Lepers R. Effect of mental fatigue on hand force production capacities. PLoS One 2024; 19:e0298958. [PMID: 38564497 PMCID: PMC10986955 DOI: 10.1371/journal.pone.0298958] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 02/01/2024] [Indexed: 04/04/2024] Open
Abstract
Mental fatigue is common in society, but its effects on force production capacities remain unclear. This study aimed to investigate the impact of mental fatigue on maximal force production, rate of force development-scaling factor (RFD-SF), and force steadiness during handgrip contractions. Fourteen participants performed two randomized sessions, during which they either carried out a cognitively demanding task (i.e., a visual attention task) or a cognitively nondemanding task (i.e., documentary watching for 62 min). The mental fatigue was evaluated subjectively and objectively (performances and electroencephalography). Maximal voluntary contraction (MVC) force, RFD-SF, and force steadiness (i.e., force coefficient of variation at submaximal intensities; 25, 50, and 75% of MVC) were recorded before and after both tasks. The feeling of mental fatigue was much higher after completing the cognitively demanding task than after documentary watching (p < .001). During the cognitively demanding task, mental fatigue was evidenced by increased errors, missed trials, and decreased N100 amplitude over time. While no effect was reported on force steadiness, both tasks induced a decrease in MVC (p = .040), a force RFD-SF lower slope (p = .011), and a reduction in the coefficient of determination (p = .011). Nevertheless, these effects were not explicitly linked to mental fatigue since they appeared both after the mentally fatiguing task and after watching the documentary. The study highlights the importance of considering cognitive engagement and mental load when optimizing motor performance to mitigate adverse effects and improve force production capacities.
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Affiliation(s)
- Thomas Jacquet
- Faculté des Sciences du Sport, CAPS, Inserm U1093, BP 27877 UFR STAPS, Université de Bourgogne, Dijon, France
| | | | - Patrick Bard
- LEAD – CNRS UMR5022, Université de Bourgogne, Dijon, France
| | - Romuald Lepers
- Faculté des Sciences du Sport, CAPS, Inserm U1093, BP 27877 UFR STAPS, Université de Bourgogne, Dijon, France
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6
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Cardoso MR, Armstrong DP, Fischer SL, Albert WJ. Differential effects of sex on upper body kinematics and kinetics during fatiguing, Asymmetric lifting. Appl Ergon 2024; 116:104203. [PMID: 38101162 DOI: 10.1016/j.apergo.2023.104203] [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] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
This study quantified sex-specific biomechanical adaptations to fatigue in asymmetric lifting. Twenty-one females and fifteen males performed a prolonged asymmetric lifting protocol while upper body, trunk and pelvis kinematics were collected. Features of movement identified with principal component analysis, and peak joint angular velocities and moments were calculated. Sex-specific kinematic adaptations to fatigue included females adopting a 'stoop-like' lifting strategy to a greater extent than males. Additionally, females exhibited higher vertical elbow positions during load rotation, moved their body toward the destination for load deposit, and did not reduce peak right shoulder flexion velocities, in contrast to male participants. Females also had greater low back and shoulder peak normalized joint moments. When fatigued, females adopted an asymmetric lifting strategy that minimized metabolic demand as supported by smaller decreases in maximum voluntary contractions. However, females' fatigue-related adaptations increased biomechanical exposures associated with injury risk.
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Affiliation(s)
| | - Daniel P Armstrong
- Department of Kinesiology and Health Sciences, Faculty of Health, University of Waterloo, Waterloo, ON, Canada
| | - Steven L Fischer
- Department of Kinesiology and Health Sciences, Faculty of Health, University of Waterloo, Waterloo, ON, Canada
| | - Wayne J Albert
- Faculty of Kinesiology, University of New Brunswick, Fredericton, NB, Canada
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Tran P, Linekar A, Dandekar U, Barker T, Balasubramanian S, Bhaskara-Pillai J, Shelley S, Maddock H, Banerjee P. Profiling the Biomechanical Responses to Workload on the Human Myocyte to Explore the Concept of Myocardial Fatigue and Reversibility: Rationale and Design of the POWER Heart Failure Study. J Cardiovasc Transl Res 2024; 17:275-286. [PMID: 37126208 PMCID: PMC10150683 DOI: 10.1007/s12265-023-10391-9] [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: 11/24/2022] [Accepted: 04/20/2023] [Indexed: 05/02/2023]
Abstract
It remains unclear why some patients develop heart failure without evidence of structural damage. One theory relates to impaired myocardial energetics and ventricular-arterial decoupling as the heart works against adverse mechanical load. In this original study, we propose the novel concept of myocardial fatigue to capture this phenomenon and aim to investigate this using human cardiomyocytes subjected to a modern work-loop contractility model that closely mimics in vivo cardiac cycles. This proof-of-concept study (NCT04899635) will use human myocardial tissue samples from patients undergoing cardiac surgery to develop a reproducible protocol to isolate robust calcium-tolerant cardiomyocytes. Thereafter, work-loop contractility experiments will be performed over a range of preload, afterload and cycle frequency as a function of time to elicit any reversible reduction in contractile performance (i.e. fatigue). This will provide novel insight into mechanisms behind heart failure and myocardial recovery and serve as a valuable research platform in translational cardiovascular research.
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Affiliation(s)
- Patrick Tran
- Centre for Sport, Exercise & Life Sciences, Faculty of Health & Life Sciences, Coventry University, Coventry, UK.
- Cardiology Department, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry, UK.
| | - Adam Linekar
- Centre for Sport, Exercise & Life Sciences, Faculty of Health & Life Sciences, Coventry University, Coventry, UK
- InoCardia Ltd, TechnoCentre, Puma Way, Coventry, UK
| | - Uday Dandekar
- Cardiology Department, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry, UK
- Warwick Medical School, University of Warwick, Coventry, UK
| | - Thomas Barker
- Centre for Sport, Exercise & Life Sciences, Faculty of Health & Life Sciences, Coventry University, Coventry, UK
- Cardiology Department, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry, UK
- Warwick Medical School, University of Warwick, Coventry, UK
| | - Sendhil Balasubramanian
- Cardiology Department, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry, UK
- Warwick Medical School, University of Warwick, Coventry, UK
| | - Jain Bhaskara-Pillai
- Cardiology Department, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry, UK
- Warwick Medical School, University of Warwick, Coventry, UK
| | - Sharn Shelley
- Centre for Sport, Exercise & Life Sciences, Faculty of Health & Life Sciences, Coventry University, Coventry, UK
- InoCardia Ltd, TechnoCentre, Puma Way, Coventry, UK
| | - Helen Maddock
- Centre for Sport, Exercise & Life Sciences, Faculty of Health & Life Sciences, Coventry University, Coventry, UK
- InoCardia Ltd, TechnoCentre, Puma Way, Coventry, UK
| | - Prithwish Banerjee
- Centre for Sport, Exercise & Life Sciences, Faculty of Health & Life Sciences, Coventry University, Coventry, UK
- Cardiology Department, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry, UK
- Warwick Medical School, University of Warwick, Coventry, UK
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8
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Frasie A, Bertrand-Charette M, Compagnat M, Bouyer LJ, Roy JS. Validation of the Borg CR10 Scale for the evaluation of shoulder perceived fatigue during work-related tasks. Appl Ergon 2024; 116:104200. [PMID: 38091692 DOI: 10.1016/j.apergo.2023.104200] [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] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/25/2023] [Accepted: 12/04/2023] [Indexed: 01/16/2024]
Abstract
Work-related upper extremity disorders (WRUEDs) are highly prevalent and costly. Development of fatigue is thought to be one of the causes of WRUEDs. Perceived fatigue can be assessed with the Borg CR Scale® (Borg CR10). The objective was to validate the Borg CR10 for the evaluation of shoulder perceived fatigue during lifting tasks. Seventy adults in working age performed three rhythmic lifting tasks with two loads (15% and 30% of maximal voluntary contraction). Using generalized repeated-measures ANOVA (Generalized Estimating Equations), statistically significant Task and Load effects (p < 0.001), as well as Task × Load interaction effects (p < 0.0001) were observed on Borg CR10, without any influence of sex. The Borg CR10 is a valid tool to assess shoulder perceived fatigue as it can discriminate between tasks of different difficulty levels in term of complexity, height, and resistance, regardless of sex.
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Affiliation(s)
- Antoine Frasie
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (Cirris). Québec, QC, Canada; Department of Rehabilitation, Faculty of Medicine, Université Laval. Québec, QC, Canada
| | - Michaël Bertrand-Charette
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (Cirris). Québec, QC, Canada; Department of Rehabilitation, Faculty of Medicine, Université Laval. Québec, QC, Canada
| | - Maxence Compagnat
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (Cirris). Québec, QC, Canada; HAVAE EA6310 (Handicap, Aging, Autonomy, Environment), IFRH, University of Limoges, Department of Physical Medicine and Rehabilitation in the University Hospital Center of Limoges: Limoges, France
| | - Laurent J Bouyer
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (Cirris). Québec, QC, Canada; Department of Rehabilitation, Faculty of Medicine, Université Laval. Québec, QC, Canada
| | - Jean-Sébastien Roy
- Center for Interdisciplinary Research in Rehabilitation and Social Integration (Cirris). Québec, QC, Canada; Department of Rehabilitation, Faculty of Medicine, Université Laval. Québec, QC, Canada.
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9
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Magdalena PG, Bartłomiej B, Robert T, Małgorzata S, Hsing-Kuo W, Sebastian K. Acute fatigue-induced alterations in hamstring muscle properties after repeated Nordic hamstring exercises. Sci Prog 2024; 107:368504241242934. [PMID: 38592327 PMCID: PMC11005512 DOI: 10.1177/00368504241242934] [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: 04/10/2024]
Abstract
This study aimed to investigate the impact of the Nordic hamstring exercises (NHE) on acute fatigue-induced alterations in the mechanical and morphological properties of hamstring muscles. The second aim was to define the blood flow and perfusion after NHE in recreational active volunteers. Twenty-two individuals volunteered to participate in the study. This study investigated fatigue outcomes: rate of perceived exertion (RPE) scale and average force generated during NHE; mechanical properties (stiffness); morphological properties (thickness, pennation angle, and fascicle length), and vascularity index (VI) of the semitendinosus (ST) and biceps femoris long head (BFLH) at baseline, immediately post-exercise and 1-h post-exercise. The NHE fatigue procedure consisted of six bouts of five repetitions. The results showed an increase in thickness and pennation angle of BFLH and ST immediately post-exercise and a decrease in thickness and pennation angle of BFLH and ST 1-h post-exercise. While the fascicle length of BFLH and ST decreased immediately post-exercise and increased 1-h post-exercise. The VI for two muscles increased immediately post-exercise and after 1-h post-exercise. Moreover, we found a relationship between RPE and average force, that is, as RPE increased during NHE, average force decreased. In conclusion, eccentric NHE exercises significantly and acutely affect BFLH and ST. The NHE fatigue protocol significantly affected the mechanical and morphological properties of BFLH and ST muscles, changing their thickness, fascicle length, pennation angle, and VI.
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Affiliation(s)
| | - Bogdański Bartłomiej
- Doctoral School, Gdansk University of Physical Education and Sport, Gdańsk, Poland
| | - Trybulski Robert
- ProvitaZory Medical Center, Zory, Poland
- Department of Medical Sciences, The Wojciech Korfanty Upper Silesian Academy, Katowice, Poland
| | - Smoter Małgorzata
- Department of Basic Physiotherapy, Gdansk University of Physical Education and Sport, Gdansk, Poland
| | - Wang Hsing-Kuo
- School and Graduate Institute of Physical Therapy, National Taiwan University, Taipei, Taiwan
- Center of Physical Therapy, National Taiwan University Hospital, Taipei, Taiwan
| | - Klich Sebastian
- Department of Paralympic Sport, Wrocław University of Health and Sport Sciences, Wrocław, Poland
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Brotherton EJ, Sabapathy S, Dempsey LM, Kavanagh JJ. Short-latency afferent inhibition is reduced in people with multiple sclerosis during fatiguing muscle contractions. Eur J Neurosci 2024; 59:2087-2101. [PMID: 38234172 DOI: 10.1111/ejn.16253] [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: 10/18/2023] [Revised: 12/31/2023] [Accepted: 01/02/2024] [Indexed: 01/19/2024]
Abstract
Understanding how inhibitory pathways influence motor cortical activity during fatiguing contractions may provide valuable insight into mechanisms associated with multiple sclerosis (MS) muscle activation. Short-latency afferent inhibition (SAI) reflects inhibitory interactions between the somatosensory cortex and the motor cortex, and although SAI is typically reduced with MS, it is unknown how SAI is regulated during exercise-induced fatigue. The current study examined how SAI modulates motor evoked potentials (MEPs) during fatiguing contractions. Fourteen people with relapsing-remitting MS (39 ± 6 years, nine female) and 10 healthy individuals (36 ± 6 years, six female) participated. SAI was induced by stimulation of the median nerve that was paired with TMS over the motor representation of the abductor pollicis brevis. A contraction protocol was employed that depressed force generating capacity using a sustained 3-min 15% MVC, immediately followed by a low-intensity (15% MVC) intermittent contraction protocol so that MEP and SAI could be measured during the rest phases of each duty cycle. Similar force, electromyography and MEP responses were observed between groups. However, the MS group had significantly reduced SAI during the contraction protocol compared to the healthy control group (p < .001). Despite the MS group reporting greater scores on the Fatigue Severity Scale and Modified Fatigue Impact Scale, these scales did not correlate with inhibitory measures. As there were no between-group differences in SSEPs, MS-related SAI differences during the fatiguing contractions were most likely associated with disease-related changes in central integration.
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Affiliation(s)
- Emily J Brotherton
- Neural Control of Movement Laboratory, Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
| | - Surendran Sabapathy
- Exercise Physiology Laboratory, Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
| | - Lisa M Dempsey
- Neural Control of Movement Laboratory, Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
| | - Justin J Kavanagh
- Neural Control of Movement Laboratory, Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland, Australia
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11
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Silva-Rojas R, Pérez-Guàrdia L, Simon A, Djeddi S, Treves S, Ribes A, Silva-Hernández L, Tard C, Laporte J, Böhm J. ORAI1 inhibition as an efficient preclinical therapy for tubular aggregate myopathy and Stormorken syndrome. JCI Insight 2024; 9:e174866. [PMID: 38516893 DOI: 10.1172/jci.insight.174866] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 02/14/2024] [Indexed: 03/23/2024] Open
Abstract
Tubular aggregate myopathy (TAM) and Stormorken syndrome (STRMK) are clinically overlapping disorders characterized by childhood-onset muscle weakness and a variable occurrence of multisystemic signs, including short stature, thrombocytopenia, and hyposplenism. TAM/STRMK is caused by gain-of-function mutations in the Ca2+ sensor STIM1 or the Ca2+ channel ORAI1, both of which regulate Ca2+ homeostasis through the ubiquitous store-operated Ca2+ entry (SOCE) mechanism. Functional experiments in cells have demonstrated that the TAM/STRMK mutations induce SOCE overactivation, resulting in excessive influx of extracellular Ca2+. There is currently no treatment for TAM/STRMK, but SOCE is amenable to manipulation. Here, we crossed Stim1R304W/+ mice harboring the most common TAM/STRMK mutation with Orai1R93W/+ mice carrying an ORAI1 mutation partially obstructing Ca2+ influx. Compared with Stim1R304W/+ littermates, Stim1R304W/+Orai1R93W/+ offspring showed a normalization of bone architecture, spleen histology, and muscle morphology; an increase of thrombocytes; and improved muscle contraction and relaxation kinetics. Accordingly, comparative RNA-Seq detected more than 1,200 dysregulated genes in Stim1R304W/+ muscle and revealed a major restoration of gene expression in Stim1R304W/+Orai1R93W/+ mice. Altogether, we provide physiological, morphological, functional, and molecular data highlighting the therapeutic potential of ORAI1 inhibition to rescue the multisystemic TAM/STRMK signs, and we identified myostatin as a promising biomarker for TAM/STRMK in humans and mice.
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Affiliation(s)
- Roberto Silva-Rojas
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U1258, CNRS UMR7104, University of Strasbourg, Illkirch, France
| | - Laura Pérez-Guàrdia
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U1258, CNRS UMR7104, University of Strasbourg, Illkirch, France
| | - Alix Simon
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U1258, CNRS UMR7104, University of Strasbourg, Illkirch, France
| | - Sarah Djeddi
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U1258, CNRS UMR7104, University of Strasbourg, Illkirch, France
| | - Susan Treves
- Departments of Neurology and Biomedicine, Basel University Hospital, Basel, Switzerland
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Agnès Ribes
- Institute of Metabolic and Cardiovascular Disease, Inserm UMR1297 and University of Toulouse 3, Toulouse, France
- Laboratory of Hematology, University Hospital of Toulouse, Toulouse, France
| | - Lorenzo Silva-Hernández
- Neurology Service, Hospital Universitario Puerta de Hierro Majadahonda, Majadahonda, Madrid, Spain
| | - Céline Tard
- University Lille, Inserm, CHU Lille, U1172 Lille Neuroscience & Cognition, Center for Rare Neuromuscular Diseases Nord/Est/Ile-de-France, Lille, France
| | - Jocelyn Laporte
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U1258, CNRS UMR7104, University of Strasbourg, Illkirch, France
| | - Johann Böhm
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U1258, CNRS UMR7104, University of Strasbourg, Illkirch, France
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Clark K, Trickett J, Donovan L, Dawson J, Goetschius J. Effects of Blood Flow Restriction on Balance Performance During Dynamic Balance Exercises in Individuals With Chronic Ankle Instability. J Sport Rehabil 2024; 33:181-188. [PMID: 38350443 DOI: 10.1123/jsr.2023-0182] [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: 06/09/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 02/15/2024]
Abstract
CONTEXT Blood flow restriction (BFR) is a rehabilitation tool which may introduce a constraint, similar to muscle fatigue, that challenge patients' sensorimotor system during balance exercises. The purpose of our study was to examine whether adding BFR to dynamic balance exercises produced a decrease in balance performance and an increase in ratings of perceived exertion and instability in individuals with chronic ankle instability (CAI) compared with dynamic balance exercises without BFR. DESIGNS Crossover design. METHODS Our sample included N = 25 young adults with a history of CAI. Participants completed 2 laboratory visits. At each visit, participants completed 4 sets (30×-15×-15×-15×) of dynamic balance exercises, performed similar to the modified star excursion balance test (SEBT), once with BFR and once with control (no BFR) conditions. We measured composite SEBT scores at baseline and during the final repetitions of each set of balance exercise (sets 1-4). We also measured ratings of perceived exertion and instability following each balance exercise set. RESULTS We observed no difference in composite SEBT scores between conditions at baseline; however, composite SEBT scores were significantly lower during all balance exercises sets 1 to 4 with the BFR condition compared with control. During the BFR condition, composite SEBT scores were significantly lower during all balance exercise sets compared with baseline. During the control condition, composite SEBT scores did not significantly change between baseline and each balance exercise set. Ratings of perceived exertion and instability scores were significantly greater in the BFR group compared with the control group during all balance exercise sets. CONCLUSIONS Individuals with CAI demonstrated lower composite SEBT scores and greater perceived instability and exertion during dynamic balance exercise with BFR compared to without BFR. BFR introduced a novel muscle fatigue constraint during dynamic balance exercises in individuals with CAI. Additional research is needed to determine if adding BFR to balance training could improve clinical outcomes in CAI patients.
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Affiliation(s)
- Krista Clark
- Department of Health Professions, James Madison University, Harrisonburg, VA, USA
| | - Justin Trickett
- Department of Health Professions, James Madison University, Harrisonburg, VA, USA
| | - Luke Donovan
- Department of Applied Physiology, Health, & Clinical Sciences, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Jordan Dawson
- Department of Health Professions, James Madison University, Harrisonburg, VA, USA
| | - John Goetschius
- Department of Health Professions, James Madison University, Harrisonburg, VA, USA
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Watanabe D, Nishi M, Liu F, Bian Y, Takeshima H. Ca 2+ storage function is altered in the sarcoplasmic reticulum of skeletal muscle lacking mitsugumin 23. Am J Physiol Cell Physiol 2024; 326:C795-C809. [PMID: 38223925 DOI: 10.1152/ajpcell.00440.2023] [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: 09/11/2023] [Revised: 12/26/2023] [Accepted: 01/05/2024] [Indexed: 01/16/2024]
Abstract
Mitsugumin 23 (MG23) has been identified as a ball-shaped cation channel in the sarcoplasmic reticulum (SR) but its physiological role remains unclear. This study aimed to examine the contribution of MG23 to Ca2+ storage function in skeletal muscle by using Mg23-knockout (Mg23-/-) mice. There was no difference in the isometric specific force of the extensor digitorum longus (EDL) and soleus (SOL) muscles between Mg23-/- and wild-type (Wt) mice. In Mg23-/- mice, the calsequestrin 2 content in the EDL muscle and SR Ca2+-ATPase 2 content in the SOL were increased. We have examined SR and myofibril functions using mechanically skinned fibers and determined their fiber types based on the response to Sr2+, which showed that Mg23-/- mice, compared with Wt, had: 1) elevated total Ca2+ content in the membranous components including SR, mitochondria, and transverse tubular system referred to as endogenous Ca2+ content, in both type I and II fibers of the EDL and SOL; 2) increased maximal Ca2+ content in both type I and II fibers of the EDL and SOL; 3) decreased SR Ca2+ leakage in type I fibers of the SOL; and 4) enhanced SR Ca2+ uptake in type I fibers of the SOL, although myofibril function was not different in both type I and II fibers of the SOL and EDL muscles. These results suggest that MG23 decreases SR Ca2+ storage in both type I and type II fibers, likely due to increased SR Ca2+ leakage.NEW & NOTEWORTHY The function of calcium storage within sarcoplasmic reticulum (SR) plays a pivotal role in influencing the health and disease states of skeletal muscle. In the present study, we demonstrated that mitsgumin 23, a novel non-selective cation channel, modifies SR Ca2+ storage in skeletal muscle fibers. These findings provide valuable insights into the physiological regulation of Ca2+ in skeletal muscle, offering significant potential for uncovering the mechanisms underlying muscle fatigue, muscle adaptation, and muscle diseases.
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Affiliation(s)
- Daiki Watanabe
- Graduate School of Sport and Health Sciences, Osaka University of Health and Sport Sciences, Osaka, Japan
| | - Miyuki Nishi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Feng Liu
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Yuhan Bian
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Hiroshi Takeshima
- Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
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Rojas DHG, Wizenberg AM, Rivera PM, Proppe CE, Lawson JE, Stock MS, Stout JR, Billaut F, Hill EC. Acute Effects of Sprint Interval Training and Blood Flow Restriction on Neuromuscular and Muscle Function. J Musculoskelet Neuronal Interact 2024; 24:38-46. [PMID: 38427367 PMCID: PMC10910201] [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] [Subscribe] [Scholar Register] [Accepted: 11/20/2023] [Indexed: 03/02/2024]
Abstract
BFR) applied during sprint interval training (SIT) on performance and neuromuscular function. METHODS Fifteen men completed a randomized bout of SIT with CBFR, IBFR, and without BFR (No-BFR), consisting of 2, 30-s maximal sprints on a cycle ergometer with a resistance of 7.5% of body mass. Concentric peak torque (CPT), maximal voluntary isometric contraction (MVIC) torque, and muscle thickness (MT) were measured before and after SIT, including surface electromyography (sEMG) recorded during the strength assessments. Peak and mean revolutions per minute (RPM) were measured during SIT and power output was examined relative to physical working capacity at the fatigue threshold (PWCFT). RESULTS CPT and MVIC torque decreased from pre-SIT (220.3±47.6 Nm and 355.1±72.5 Nm, respectively) to post-SIT (147.9±27.7 Nm and 252.2±45.5 Nm, respectively, all P<0.05), while MT increased (1.77±0.31 cm to 1.96±0.30 cm). sEMG mean power frequency decreased during CPT (-12.8±10.5%) and MVIC (-8.7±10.2%) muscle actions. %PWCFT was greater during No-BFR (414.2±121.9%) than CBFR (375.9±121.9%). CONCLUSION SIT with or without BFR induced comparable alterations in neuromuscular fatigue and sprint performance across all conditions, without affecting neuromuscular function.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Ethan C. Hill
- University of Central Florida, Orlando, FL, USA
- Florida Space Institute Partnership, Research Parkway, FL, USA
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15
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Li Z, Li W, Lin PJ, Jia T, Ji L, Li C. Motor-Respiratory Coupling Improves Endurance Performance during Rhythmic Isometric Handgrip Exercise. Med Sci Sports Exerc 2024; 56:536-544. [PMID: 37882076 DOI: 10.1249/mss.0000000000003329] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
PURPOSE This study aimed to evaluate whether motor-respiratory coupling exists in rhythmic isometric handgrip exercises and its effect on endurance performance. In addition, the mechanism underlying observed effects was to be investigated if higher motor-respiratory coupling rate could enhance endurance performance. METHODS Eleven subjects completed three rhythmic isometric handgrip trials to task failure in a randomized manner. After one pretraining session to determine personal grip frequency, one trial was performed without respiration requirement (CON), and two trials were performed with inspiration-motor coupling (IMC) or expiration-motor coupling. Changes in maximal voluntary contraction (MVC) and EMG were used to measure neuromuscular fatigue. Force data during test were used to assess exercise intensity. Another 10 subjects completed electrical stimulation-induced finger flexion and extension during normal inspiration, normal expiration, fast inspiration, fast expiration, and breath holding. Force changes of different breathing conditions were compared. RESULTS Normalized exercise time to exhaustion was significantly longer in IMC (1.27 ± 0.23) compared with expiration-motor coupling (0.82 ± 0.18) and CON (0.91 ± 0.18, P < 0.001). ΔMVC, grip frequency, force, and EMG indices were not different among conditions (all P > 0.05). Electrical stimulation-induced finger extensor force was significant higher during fast inspiration (1.11 ± 0.09) than normal respiration (1.00 ± 0.05) and fast expiration (0.94 ± 0.08, P < 0.05). CONCLUSIONS IMC is an effective way to improve endurance performance of rhythmic handgrip exercise. This is likely due to a reduction in the energy consumption of motion control, as evidenced by similar peripheral fatigue in different conditions and modulation of corticospinal excitability by respiration.
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Affiliation(s)
- Zhibin Li
- Lab of Intelligent and Bio-mimetic Machinery, Department of Mechanical Engineering, Tsinghua University, Beijing, CHINA
| | - Wei Li
- Lab of Intelligent and Bio-mimetic Machinery, Department of Mechanical Engineering, Tsinghua University, Beijing, CHINA
| | - Ping-Ju Lin
- Lab of Intelligent and Bio-mimetic Machinery, Department of Mechanical Engineering, Tsinghua University, Beijing, CHINA
| | - Tianyu Jia
- Lab of Intelligent and Bio-mimetic Machinery, Department of Mechanical Engineering, Tsinghua University, Beijing, CHINA
| | - Linhong Ji
- Lab of Intelligent and Bio-mimetic Machinery, Department of Mechanical Engineering, Tsinghua University, Beijing, CHINA
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16
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Ziane C, Goubault E, Michaud B, Begon M, Dal Maso F. Muscle fatigue during assisted violin performance. Ergonomics 2024; 67:275-287. [PMID: 37264800 DOI: 10.1080/00140139.2023.2221416] [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] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 05/20/2023] [Indexed: 06/03/2023]
Abstract
Muscle fatigue is a primary risk factor in developing musculoskeletal disorders, which affect up to 93% musicians, especially violinists. Devices providing dynamic assistive support (DAS) to the violin-holding arm can lessen fatigue. The objective was to assess DAS effects on electromyography median frequency and joint kinematics during a fatiguing violin-playing task. Fifteen university-level and professional violinists were equipped with electromyography sensors and reflective markers to record upper-body muscle activity and kinematics. They played G scales with and without DAS until exhaustion. Paired t-tests assessed DAS effects on delta (final-initial) electromyography median frequencies and joint kinematics. DAS prevented the median frequency decrease of left supraspinatus, superior trapezius, and right medial deltoid, and increases in trunk rotation, left-wrist abduction, and right arm-elevation plane. DAS effects on kinematics were marginal due to retention of musical performance despite fatigue. However, DAS reduced fatigue of several muscles, which is promising for injury prevention.Practitioner summary: Violinists are greatly affected by musculoskeletal disorders. Effects of a mobility assistive device on muscle fatigue during violin playing was investigated. The assistive technology slowed down the development of fatigue for three neck/shoulder muscles, making assisted musical performance a promising avenue to prevent violinists' injuries.
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Affiliation(s)
- Clara Ziane
- Laboratoire de simulation et modélisation du mouvement, School of Kinesiology and Physical Activity Sciences, University of Montreal, Laval, Canada
- Centre Interdisciplinaire de Recherche sur le Cerveau et l'Apprentissage, University of Montreal, Montreal, Canada
| | - Etienne Goubault
- Laboratoire de simulation et modélisation du mouvement, School of Kinesiology and Physical Activity Sciences, University of Montreal, Laval, Canada
| | - Benjamin Michaud
- Laboratoire de simulation et modélisation du mouvement, School of Kinesiology and Physical Activity Sciences, University of Montreal, Laval, Canada
| | - Mickaël Begon
- Laboratoire de simulation et modélisation du mouvement, School of Kinesiology and Physical Activity Sciences, University of Montreal, Laval, Canada
- Centre de Recherche du CHU Sainte-Justine, Montreal, Canada
| | - Fabien Dal Maso
- Laboratoire de simulation et modélisation du mouvement, School of Kinesiology and Physical Activity Sciences, University of Montreal, Laval, Canada
- Centre Interdisciplinaire de Recherche sur le Cerveau et l'Apprentissage, University of Montreal, Montreal, Canada
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17
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Vu QM, Fitzpatrick AL, Cope JR, Bertolli J, Sotoodehnia N, West TE, Gentile N, Unger ER. Estimates of Incidence and Predictors of Fatiguing Illness after SARS-CoV-2 Infection. Emerg Infect Dis 2024; 30:539-547. [PMID: 38407166 PMCID: PMC10902536 DOI: 10.3201/eid3003.231194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Abstract
This study aimed to estimate the incidence rates of post-COVID-19 fatigue and chronic fatigue and to quantify the additional incident fatigue caused by COVID-19. We analyzed electronic health records data of 4,589 patients with confirmed COVID-19 during February 2020-February 2021 who were followed for a median of 11.4 (interquartile range 7.8-15.5) months and compared them to data from 9,022 propensity score-matched non-COVID-19 controls. Among COVID-19 patients (15% hospitalized for acute COVID-19), the incidence rate of fatigue was 10.2/100 person-years and the rate of chronic fatigue was 1.8/100 person-years. Compared with non-COVID-19 controls, the hazard ratios were 1.68 (95% CI 1.48-1.92) for fatigue and 4.32 (95% CI 2.90-6.43) for chronic fatigue. The observed association between COVID-19 and the significant increase in the incidence of fatigue and chronic fatigue reinforces the need for public health actions to prevent SARS-CoV-2 infections.
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18
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Anders JPV, Neltner TJ, Smith RW, Arnett JE, Housh TJ, Schmidt RJ, Johnson GO. Unilateral and Bilateral Isokinetic Leg Extensions Exhibit No Differences in Neuromuscular Excitation Under Maximal and Fatiguing Conditions. J Strength Cond Res 2024; 38:474-480. [PMID: 38090801 DOI: 10.1519/jsc.0000000000004652] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Abstract
Anders, JPV, Neltner, TJ, Smith, RW, Arnett, JE, Housh, TJ, Schmidt, RJ, and Johnson, GO. Unilateral and bilateral isokinetic leg extensions exhibit no differences in neuromuscular activation under maximal and fatiguing conditions. J Strength Cond Res 38(3): 474–480, 2024—The bilateral deficit is a phenomenon where force production during a bilateral (BL) muscle action is less than the sum of force produced when the muscle action is performed unilaterally (UL) with both limbs. The purpose of this study was to compare peak force, electromyographic (EMG) amplitude (AMP), and mean power frequency (MPF) of the nondominant leg between UL and BL isokinetic leg extensions. Eleven recreationally trained men (mean ± SD; age = 20.8 ± 1.7 years; body mass = 84.0 ± 16.2 kg; height = 179.3 ± 7.2 cm) volunteered to participate in this study. The 2 test visits included UL and BL maximal isokinetic leg extensions at 180°·second−1 followed by a fatiguing task of either 50 UL or 25 UL followed immediately by 25 BL (ULBL) maximal, isokinetic leg extensions at 180°·second−1, in random order on separate days. The results demonstrated a significant (p = 0.015,
= 0.460) bilateral deficit in force (UL = 56.29 ± 11.20 kg; BL = 50.32 ± 7.35 kg; d = 0.63; 95% CI [1.42, 10.52]) but no significant bilateral deficit in EMG AMP (p = 0.892,
= 0.002). The peak force during the fatiguing task demonstrated a significant main effect for repetition (p < 0.001,
= 0.943) characterized by a reduced peak force from repetitions 20–50. Similarly, EMG MPF demonstrated a significant main effect for repetition (p < 0.001,
= 0.702) characterized by a reduced EMG MPF from repetitions 35–50. There were no significant effects (p = 0.102–0.387,
= 0.096–0.203) for EMG AMP. These findings suggested that the bilateral deficit was not associated with a neuromuscular deficit and UL muscle actions may be used to potentiate force production of subsequent BL muscle actions.
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Affiliation(s)
- John Paul V Anders
- The Exercise Science Program, Department of Human Sciences, The Ohio State University, Columbus, Ohio; and
| | - Tyler J Neltner
- Exercise Physiology Laboratory, Department of Nutrition and Health Sciences, The University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Robert W Smith
- Exercise Physiology Laboratory, Department of Nutrition and Health Sciences, The University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Jocelyn E Arnett
- Exercise Physiology Laboratory, Department of Nutrition and Health Sciences, The University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Terry J Housh
- Exercise Physiology Laboratory, Department of Nutrition and Health Sciences, The University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Richard J Schmidt
- Exercise Physiology Laboratory, Department of Nutrition and Health Sciences, The University of Nebraska-Lincoln, Lincoln, Nebraska
| | - Glen O Johnson
- Exercise Physiology Laboratory, Department of Nutrition and Health Sciences, The University of Nebraska-Lincoln, Lincoln, Nebraska
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19
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Bowen M, Samozino P, Vonderscher M, Dutykh D, Morel B. Mathematical modeling of exercise fatigability in the severe domain: A unifying integrative framework in isokinetic condition. J Theor Biol 2024; 578:111696. [PMID: 38070705 DOI: 10.1016/j.jtbi.2023.111696] [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: 04/17/2023] [Revised: 11/15/2023] [Accepted: 12/04/2023] [Indexed: 12/22/2023]
Abstract
Muscle fatigue is the decay in the ability of muscles to generate force, and results from neural and metabolic perturbations. This article presents an integrative mathematical model that describes the decrease in maximal force capacity (i.e. fatigue) over exercises performed at intensities above the critical force Fc (i.e. severe domain). The model unifies the previous Critical Power Model and All-Out Model and can be applied to any exercise described by a changing force F over time. The assumptions of the model are (i) isokinetic conditions, an intensity domain of Fc
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Affiliation(s)
- M Bowen
- Laboratoire Interuniversitaire de Biologie de la Motricité LIBM, EA 7424, Savoie Mont Blanc University, F-7300, Chambéry, France.
| | - P Samozino
- Laboratoire Interuniversitaire de Biologie de la Motricité LIBM, EA 7424, Savoie Mont Blanc University, F-7300, Chambéry, France
| | - M Vonderscher
- Laboratoire Interuniversitaire de Biologie de la Motricité LIBM, EA 7424, Savoie Mont Blanc University, F-7300, Chambéry, France
| | - D Dutykh
- Mathematics Department, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates; Causal Dynamics Pty Ltd, WA 6009, Perth, Australia
| | - B Morel
- Laboratoire Interuniversitaire de Biologie de la Motricité LIBM, EA 7424, Savoie Mont Blanc University, F-7300, Chambéry, France
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Turner A, McKean M, Doyle D, Burkett B. The reliability of a linear position transducer for measuring countermovement jump performance in national-level road cyclists. PLoS One 2024; 19:e0298291. [PMID: 38319955 PMCID: PMC10846725 DOI: 10.1371/journal.pone.0298291] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 01/23/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Jump tests have applications in fatigue monitoring, training intervention evaluations, and talent identification in cycling populations. Due to competitive cycling's inherent travel demands, linear position transducers (LPTs) are suitable for assessing jump performance in this population as they are a mobile and validated technology. Understanding the reliability and sensitivity of LPTs in assessing jump performance in cycling populations is required to support the development of sports science protocols. Using an LPT, this study aimed to determine the reliability and sensitivity of countermovement jump (CMJ) variables in road cyclists. METHODS Ten national-level male road cyclists performed three maximal CMJ trials twice per week for two weeks, with an LPT measuring force, power, velocity, repetition rate, vertical distance, and concentric time from each trial. Using the mean and best CMJ results from three trials per testing session, the upper limit 90% confidence interval for the coefficient of variation (CV) and smallest worthwhile change (SWC) determined inter-day and -week reliability (CV ≤ 10%) and sensitivity (acceptable sensitivity = CV ≤ SWC) for CMJ variables. RESULTS Mean power and force, velocity (mean and peak), vertical distance (VD), and concentric time had acceptable inter-day and -week reliability when using either the mean or best CMJ results (CV upper limit 90% confidence interval range = 3.54-10.13%). Moreover, the CV and SWC were typically lower when based on the mean rather than the best of three CMJ trials. Lastly, poor sensitivity (CV > SWC) was evident for all CMJ variables. CONCLUSIONS CMJ-derived mean power and force, velocity (peak and mean), VD, and concentric time have acceptable inter-day and -week reliability when assessed via an LPT in national-level road cyclists. When using an LPT, sports scientists should consider that, while they typically have poor sensitivity, the reliability of CMJ-derived variables improves when expressed as the mean of three trials in national-level road cyclists.
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Affiliation(s)
- Aaron Turner
- High-Performance Sport, University of the Sunshine Coast, Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Mark McKean
- High-Performance Sport, University of the Sunshine Coast, Sunshine Coast, Sippy Downs, Queensland, Australia
- Queensland Academy of Sport, Brisbane, Queensland, Australia
| | - Danielle Doyle
- Queensland Academy of Sport, Brisbane, Queensland, Australia
| | - Brendan Burkett
- High-Performance Sport, University of the Sunshine Coast, Sunshine Coast, Sippy Downs, Queensland, Australia
- Swimming Australia, Brisbane, Queensland, Australia
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Cornejo-Daza PJ, Villalba-Fernández A, González-Badillo JJ, Pareja-Blanco F. Time Course of Recovery From Different Velocity Loss Thresholds and Set Configurations During Full-Squat Training. J Strength Cond Res 2024; 38:221-227. [PMID: 37972985 DOI: 10.1519/jsc.0000000000004623] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
ABSTRACT Cornejo-Daza, PJ, Villalba-Fernández, A, González-Badillo, JJ, and Pareja-Blanco, F. Time course of recovery from different velocity loss thresholds and set configurations during full-squat training. J Strength Cond Res 38(2): 221-227, 2024-The aims of the research were to examine the effects of (a) velocity loss (VL) thresholds and (b) set configuration, traditional or cluster, on time-course recovery. A randomized cross-over research design was conducted, in which 15 resistance-trained men performed 4 protocols consisting of 3 sets of 70% 1RM in full squat (SQ), differing in the VL incurred during the set assessed with a linear velocity transducer: (a) 20% (70-20), (b) 30% (70-30), (c) 40% (70-40), and in the set configuration (d) 20% of VL using a cluster methodology (70-CLU). Movement velocity against the load that elicited a 1 m·s -1 velocity at baseline measurements (V1-load) in SQ, countermovement jump (CMJ) height, and sprint time in 20 m (T20) were assessed at baseline (Pre) and postintervention (Post, 6 hour-Post, 24 hour-Post, and 48 hour-Post). The 70-20 protocol resulted in fewer total repetitions than the other protocols ( p = 0.001), whereas 70-CLU, 70-30, and 70-40 completed similar total repetitions. The 70-30 protocol significantly worsened T20 at 6 hours-Post, CMJ at 48 hours-Post, and V1-load at 6 hours-Post ( p < 0.05). The 70-40 protocol significantly impaired T20 at 6 hours-Post, and CMJ and V1-load at 24 hours-Post ( p < 0.05). No significant performance reductions were observed for 70-20 and 70-CLU at 6 hours-Post, 24 hours-Post, and 48 hours-Post. Protocols with higher VL resulted in more pronounced fatigue and a slower rate of recovery. Cluster sets (70-CLU) resulted in higher volume than protocols with a similar level of fatigue (70-20) and a quicker recovery than protocols with a similar volume (70-30 and 70-40).
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Affiliation(s)
- Pedro Jesús Cornejo-Daza
- Department of Sports and Computers Sciences, Physical Performance & Sports Research Center, Universidad Pablo de Olavide, Seville, Spain; and
- Department of Sports and Computers Sciences, Faculty of Sport Sciences, Universidad Pablo de Olavide, Seville, Spain
| | - Antonio Villalba-Fernández
- Department of Sports and Computers Sciences, Physical Performance & Sports Research Center, Universidad Pablo de Olavide, Seville, Spain; and
| | - Juan José González-Badillo
- Department of Sports and Computers Sciences, Physical Performance & Sports Research Center, Universidad Pablo de Olavide, Seville, Spain; and
| | - Fernando Pareja-Blanco
- Department of Sports and Computers Sciences, Physical Performance & Sports Research Center, Universidad Pablo de Olavide, Seville, Spain; and
- Department of Sports and Computers Sciences, Faculty of Sport Sciences, Universidad Pablo de Olavide, Seville, Spain
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Botelho AL, da Silva AMBR, da Silva MAMR, Cândido Dos Reis A. Assessment of neuromuscular fatigue through frequency analysis of the electromyographic signal of control participants and those with temporomandibular dysfunction treated with resilient or hard occlusal devices. J Prosthet Dent 2024; 131:233-240. [PMID: 35400505 DOI: 10.1016/j.prosdent.2021.12.015] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 12/12/2021] [Accepted: 12/13/2021] [Indexed: 10/18/2022]
Abstract
STATEMENT OF PROBLEM Muscle hyperactivity that leads to neuromuscular fatigue can be evaluated by electromyography. Whether treatment with occlusal devices can restore neuromuscular balance to patients with temporomandibular disorders (TMDs) is unclear. PURPOSE The purpose of this clinical study was to evaluate neuromuscular fatigue by analyzing the frequency of the electromyographic signal of the masseter and anterior temporalis muscles on both sides in healthy participants and those with TMD treated with a resilient or hard occlusal device. MATERIAL AND METHODS One hundred asymptomatic participants and 30 with TMD were divided into 2 groups: treated with a hard device or treated with a resilient device. All underwent electromyographic examination before and after treatment with the occlusal devices. RESULTS In both groups, the results showed statistically significant differences (P<.01) when the fatigue rate before and after treatment with an occlusal device was compared. CONCLUSIONS Treatment with both types of occlusal device was efficient in reducing the rate of neuromuscular fatigue in patients with TMDs.
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Affiliation(s)
- André Luís Botelho
- Post-Doc student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, SP, Brazil.
| | | | | | - Andréa Cândido Dos Reis
- Professor, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, SP, Brazil
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A Comprehensive Evaluation of Multiple Sclerosis-Related Fatigue with a Special Focus on Fatigability - Corrigendum. Med Sci Sports Exerc 2024; 56:383. [PMID: 38214540 DOI: 10.1249/MSS.0000000000003356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
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24
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Marina M, Torrado P, Duchateau J, Baudry S. Neural Adjustments during Repeated Braking and Throttle Actions on a Motorcycle Setup. Int J Sports Med 2024; 45:125-133. [PMID: 38096909 DOI: 10.1055/a-2197-0967] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
The aim of the study was to assess neuromuscular changes during an intermittent fatiguing task designed to replicate fundamental actions and ergonomics of road race motorcycling. Twenty-eight participants repeated a sequence of submaximal brake-pulling and gas throttle actions, interspaced by one maximal brake-pulling, until failure. During the submaximal brake-pulling actions performed at 30% MVC, force fluctuations, surface EMG, maximal M-wave (Mmax) and H-reflex were measured in the flexor digitorum superficialis. At the end of the task, the MVC force and associated EMG activity decreased (P<0.001) by 46% and 26%, respectively. During the task, force fluctuation and EMG activity increased gradually (106% and 61%, respectively) with respect to the pre-fatigue state (P≤0.029). The Mmax first phase did not change (P≥0.524), whereas the H-reflex amplitude, normalized to Mmax, increased (149%; P≤0.039). Noteworthy, the relative increase in H-reflex amplitude was correlated with the increase in EMG activity during the task (r=0.63; P<0.001). During the 10-min recovery, MVC force and EMG activity remained depressed (P≤0.05) whereas H-reflex amplitude and force fluctuation returned to pre-fatigue values. In conclusion, contrarily to other studies, our results bring forward that when mimicking motorcycling brake-pulling and gas throttle actions, supraspinal neural mechanisms primarily limit the duration of the performance.
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Affiliation(s)
- Michel Marina
- Research Group in Physical Activity and Health (GRAFAiS), Institut Nacional d'Educació Física de Catalunya (INEFC) - Universitat de Barcelona (UB), Barcelona, Spain
| | - Priscila Torrado
- Research Group in Physical Activity and Health (GRAFAiS), Institut Nacional d'Educació Física de Catalunya (INEFC) - Universitat de Barcelona (UB), Barcelona, Spain
| | - Jacques Duchateau
- Laboratory of Applied Biology, Research Unit in Applied Neurophysiology (LABNeuro), ULB Université Libre de Bruxelles, Bruxelles, Belgium
| | - Stephane Baudry
- Laboratory of Applied Biology, Research Unit in Applied Neurophysiology (LABNeuro), ULB Université Libre de Bruxelles, Bruxelles, Belgium
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Boukhris O, Zghal F, Trabelsi K, Suppiah H, Ammar A, Jahrami H, Hsouna H, Abdessalem R, Glenn JM, Chtourou H, Driller M. The impact of a 40-min nap on neuromuscular fatigue profile and recovery following the 5-m shuttle run test. J Sleep Res 2024; 33:e14052. [PMID: 37803885 DOI: 10.1111/jsr.14052] [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: 03/21/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 10/08/2023]
Abstract
This study aims to investigate the impact of a 40-min nap opportunity on perceived recovery, exertion, and maximal voluntary isometric contraction (MVIC) following the 5-m shuttle run test (5SRT), after 1 night of normal sleep. In a randomised, counterbalanced, cross-over design, 17 trained men (mean [SD] age 20 [3] years, height 173 [6] cm, body mass 68 [6] kg) performed a 5SRT under two conditions: a 40-min nap opportunity and no-nap condition. After both conditions, electromyography signals during a 5-s isometric knee extension were recorded before and immediately after the 5SRT. Two electrical nerve stimulations at the femoral nerve were measured during and after the MVIC. Force, voluntary activation level, M-wave amplitudes, potentiated twitch, and electromyography signals (root mean square) were measured during each MVIC. Perceived exertion was recorded after each repetition of the test and perceived recovery was determined after the end of the MVIC. Compared to the no-nap condition, the 40-min nap resulted in significant enhancements in both the highest distance (p < 0.01, Δ = +7.6%) and total distance (p < 0.01, Δ = +7.5%). Before and after exercise, values for MVIC, root mean square, M-wave amplitudes, and voluntary activation level were improved after the 40-min nap opportunity compared to no-nap condition (all p ≤ 0.01). Values for perceived exertion and recovery were improved after the 40-min nap opportunity in comparison with no-nap condition (p ≤ 0.01). A 40-min nap opportunity improved repeated high-intensity short-term maximal performance, perceived recovery, associated neuromuscular responses, and reduced perceived fatigue. Therefore, our findings suggest that central and peripheral processes are involved in the improvements of 5SRT performance after napping.
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Affiliation(s)
- Omar Boukhris
- SIESTA Research Group, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
- Sport, Performance, and Nutrition Research Group, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
| | - Firas Zghal
- Côte d'Azur University, LAMHESS, Nice, France
- University of Reunion, IRISSE, Le Tampon, Ile de la Réunion, France
| | - Khaled Trabelsi
- High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
- Research laboratory, Education, Motricity, Sport and Health (EM2S), LR15JS01, High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
| | - Haresh Suppiah
- SIESTA Research Group, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
- Sport, Performance, and Nutrition Research Group, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
| | - Achraf Ammar
- Department of Training and Movement Science, Institute of Sport Science, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Haitham Jahrami
- Department of Psychiatry, Ministry of Health, Manama, Bahrain
- Department of Psychiatry, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Hsen Hsouna
- High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, Tunis, Tunisia
| | - Raouf Abdessalem
- High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, Tunis, Tunisia
| | - Jordan M Glenn
- Exercise Science Research Center, Department of Health, Human Performance and Recreation, University of Arkansas, Fayetteville, Arkansas, USA
- Neurotrack Technologies, Redwood City, California, USA
| | - Hamdi Chtourou
- High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
- Physical Activity, Sport, and Health, UR18JS01, National Observatory of Sport, Tunis, Tunisia
| | - Matthew Driller
- SIESTA Research Group, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
- Sport, Performance, and Nutrition Research Group, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia
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Kayo T, Suzuki M, Mitsuma T, Fukuda F. The effect of acupuncture on exercise capacity in patients with COPD is mediated by improvements of dyspnea and leg fatigue: a causal mediation analysis using data from a randomized controlled trial. BMC Complement Med Ther 2024; 24:44. [PMID: 38245778 PMCID: PMC10799440 DOI: 10.1186/s12906-024-04353-0] [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: 03/03/2023] [Accepted: 01/13/2024] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND Acupuncture is known to improve exercise capacity in patients with chronic obstructive pulmonary disease (COPD), but its mechanism remains unknown. Whether acupuncture improves exercise capacity in patients with COPD through alleviation of leg fatigue and dyspnea is examined by applying causal mediation analysis to previous trial data. METHODS Sixty-two patients with COPD completed treatments with either real or placebo acupuncture once a week for 12 weeks. Walk distance measured using the 6-minute walk test and intensities of leg fatigue and dyspnea in the modified Borg scale were evaluated at baseline and after treatment. The intervention effect of acupuncture against the placebo acupuncture on two mediators, changes in leg fatigue and dyspnea, and whether they mediated improvements in walk distance, were analyzed. RESULTS Linear regression analysis showed that the unstandardized regression coefficients [95% confidence interval (CI)] for the intervention effect by acupuncture were -4.9 (-5.8--4.0) in leg fatigue and -3.6 (-4.3--2.9) in dyspnea. Mediation analysis showed that when changes in leg fatigue were considered as a mediator, direct effect, indirect effect and proportion mediated were 47.1 m (95% CI, 4.6-85.1), 34.3 m (-2.1-82.1), and 42.1%, respectively, and when changes in dyspnea were considered as a mediator, they were 9.8 m (-32.9-49.9), 72.5 m (31.3-121.0), and 88.1%, respectively, and the effects of joint mediator were -5.8 m (-55.4-43.9), 88.9 m (32.7-148.5), and 107.0%, respectively. CONCLUSION The improvement in exercise capacity by acupuncture is explained by changes in both leg fatigue and dyspnea.
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Affiliation(s)
- Takumi Kayo
- Department of Acupuncture and Moxibustion, Faculty of Acupuncture and Moxibustion, Meiji University of Integrative Medicine, Nantan, Kyoto, Japan.
- Department of Kampo Medical Research Institute, Aizu Medical Center, Fukushima Medical University, Aizuwakamatsu, Fukushima, Japan.
| | - Masao Suzuki
- Department of Kampo Medical Research Institute, Aizu Medical Center, Fukushima Medical University, Aizuwakamatsu, Fukushima, Japan
| | - Tadamichi Mitsuma
- Department of Kampo Medical Research Institute, Aizu Medical Center, Fukushima Medical University, Aizuwakamatsu, Fukushima, Japan
| | - Fumihiko Fukuda
- Department of Acupuncture and Moxibustion, Faculty of Acupuncture and Moxibustion, Meiji University of Integrative Medicine, Nantan, Kyoto, Japan.
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Carr JC, King AC. Sex differences in the fractal dynamics of force control during maximal handgrip. Neurosci Lett 2024; 820:137588. [PMID: 38086520 DOI: 10.1016/j.neulet.2023.137588] [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: 07/01/2023] [Revised: 12/04/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
This work examines the temporal structure of force fluctuations during maximal handgrip with detrended fluctuation analysis (DFA α). Here, we assess the influence of fatigue and sex on force complexity during unimanual handgrip for the fatigued and the contralateral, non-fatigued hand. Participants randomly completed experimental sessions requiring fatiguing handgrip contractions or control measurements only. Maximal unimanual forces of both hands were measured before and after the fatigue trial or a time-matched control visit. DFA revealed substantially lower alpha values for females (PRE = 1.15, POST = 1.25) compared to males (PRE = 1.30, POST = 1.33) regardless of fatigue (p < 0.01, d = 0.738) for the dominant hand with a similar pattern observed for the contralateral, non-fatigued hand (p = 0.045, d = 0.561). Females also showed greater alpha changes (Δ = 0.09) versus males (Δ = 0.01) following fatigue (p = 0.028, ηp2 = 0.151). The data provide evidence of reduced force complexity during successive maximal handgrip contractions for females, but not males. Our findings highlight task-specific factors involving force control and demonstrate the utility of complexity analyses to provide insights regarding the influence of sex on motor control strategies.
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Affiliation(s)
- Joshua C Carr
- Texas Christian University, Department of Kinesiology, Fort Worth, TX, United States; Anne Burnett Marion School of Medicine at Texas Christian University, Department of Medical Education, Fort Worth, TX, United States.
| | - Adam C King
- Texas Christian University, Department of Kinesiology, Fort Worth, TX, United States; Anne Burnett Marion School of Medicine at Texas Christian University, Department of Medical Education, Fort Worth, TX, United States.
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Tang X, Qi Y, Zhang J, Liu K, Tian Y, Gao X. Enhancing EEG and sEMG Fusion Decoding Using a Multi-Scale Parallel Convolutional Network With Attention Mechanism. IEEE Trans Neural Syst Rehabil Eng 2024; 32:212-222. [PMID: 38147424 DOI: 10.1109/tnsre.2023.3347579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Electroencephalography (EEG) and surface electromyography (sEMG) have been widely used in the rehabilitation training of motor function. However, EEG signals have poor user adaptability and low classification accuracy in practical applications, and sEMG signals are susceptible to abnormalities such as muscle fatigue and weakness, resulting in reduced stability. To improve the accuracy and stability of interactive training recognition systems, we propose a novel approach called the Attention Mechanism-based Multi-Scale Parallel Convolutional Network (AM-PCNet) for recognizing and decoding fused EEG and sEMG signals. Firstly, we design an experimental scheme for the synchronous collection of EEG and sEMG signals and propose an ERP-WTC analysis method for channel screening of EEG signals. Then, the AM-PCNet network is designed to extract the time-domain, frequency-domain, and mixed-domain information of the EEG and sEMG fusion spectrogram images, and the attention mechanism is introduced to extract more fine-grained multi-scale feature information of the EEG and sEMG signals. Experiments on datasets obtained in the laboratory have shown that the average accuracy of EEG and sEMG fusion decoding is 96.62%. The accuracy is significantly improved compared with the classification performance of single-mode signals. When the muscle fatigue level reaches 50% and 90%, the accuracy is 92.84% and 85.29%, respectively. This study indicates that using this model to fuse EEG and sEMG signals can improve the accuracy and stability of hand rehabilitation training for patients.
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Dakić M, Ilić V, Toskić L, Duric S, Šimenko J, Marković M, Dopsaj M, Cuk I. Acute Effects of Short-Term Massage Procedures on Neuromechanical Contractile Properties of Rectus Femoris Muscle. Medicina (Kaunas) 2024; 60:125. [PMID: 38256386 PMCID: PMC10820668 DOI: 10.3390/medicina60010125] [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] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024]
Abstract
Background and Objectives: In many sports, maintaining muscle work at an optimal level despite fatigue is crucial. Therefore, it is essential to discover the most efficient way of recovery. This study aimed to evaluate and compare the acute effects of four different recovery methods on muscle neuromechanical properties. Materials and Methods: The research was conducted using a randomized, quasi-experimental, repeated-measures design. Fourteen healthy and active male students of the Faculty of Sport and Physical Education (age 25.1 ± 3.9 years) were included in this study. The tensiomyography was used to evaluate muscle responses after four different types of short-term recovery methods (passive rest, percussive mechanical, vibro-mechanical, and manual massage) on the rectus femoris muscle on four occasions: baseline, post fatigue, post recovery and prolonged recovery. Results: The ANOVA revealed that muscle fatigue decreased maximal vertical muscle displacement (Dm) and muscle contraction time (Tc) in post fatigue compared to the baseline. The most important finding shows that only the vibro-mechanical massage resulted in an increase in Tc in the prolonged recovery compared to the post fatigue (p = 0.028), whereas only manual massage showed no differences in Dm from the baseline in post-recovery (p = 0.148). Moreover, both manual and vibro-mechanical massages increased Dm and Tc in prolonged recovery, indicating no differences from the baseline (all p > 0.05), thus showing signs of muscle recovery. Percussion mechanical massage and passive rest did not show indices of muscle recovery. Conclusions: Manual massage could induce immediate positive changes in Dm by reducing muscle stiffness. In addition, vibro-mechanical and manual massage improved muscle tissue by rapidly returning Dm and Tc values to baseline at prolonged recovery measurement (5 min after the fatigue protocol). These findings can benefit sports practitioners, and physical therapists in developing the best recovery method after muscle fatigue.
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Affiliation(s)
- Miloš Dakić
- Faculty of Sport and Physical Education, University of Belgrade, 11000 Belgrade, Serbia; (M.D.); (V.I.); (M.D.)
| | - Vladimir Ilić
- Faculty of Sport and Physical Education, University of Belgrade, 11000 Belgrade, Serbia; (M.D.); (V.I.); (M.D.)
| | - Lazar Toskić
- Faculty of Sport and Physical Education, University of Priština in Kosovska Mitrovica, 38218 Leposavić, Serbia; (L.T.); (M.M.)
- Faculty of Sport, University “Union–Nikola Tesla”, 11070 Belgrade, Serbia
| | - Sasa Duric
- Liberal Arts Department, American University of the Middle East, Egaila 54200, Kuwait;
| | - Jožef Šimenko
- Faculty of Sport, University of Ljubljana, 1000 Ljubljana, Slovenia;
| | - Milan Marković
- Faculty of Sport and Physical Education, University of Priština in Kosovska Mitrovica, 38218 Leposavić, Serbia; (L.T.); (M.M.)
| | - Milivoj Dopsaj
- Faculty of Sport and Physical Education, University of Belgrade, 11000 Belgrade, Serbia; (M.D.); (V.I.); (M.D.)
| | - Ivan Cuk
- Faculty of Sport and Physical Education, University of Belgrade, 11000 Belgrade, Serbia; (M.D.); (V.I.); (M.D.)
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Chang CH, Ho CS, Li F, Chen CY, Yeh HC, Ho CA. Acute effects of muscle mechanical properties after 2000-m rowing in young male rowers. PeerJ 2024; 12:e16737. [PMID: 38188161 PMCID: PMC10771759 DOI: 10.7717/peerj.16737] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 12/07/2023] [Indexed: 01/09/2024] Open
Abstract
Background The mechanical properties of muscles, such as changes in muscle tone and stiffness, are related to sports performance and injuries. Rowers are at increased risk of muscle fatigue and injury during high-repetition and heavy-load cyclic muscle actions. In view of this, the aim of the present study was to investigate the acute effect on muscle tone and stiffness, as well as bilateral muscle asymmetry, in high school rowers after a 2000-meter rowing ergometer test. Methods Twelve young male rowers (age = 17.1 ± 0.9 years, body weight = 73.5 ± 9.7 kg) were included in the study. The data of muscle tone (frequency) and stiffness of the posterior deltoids (PD), latissimus dorsi (LD), and rectus femoris (RF) (dominant and non-dominant side) before and after a 2000-m rowing ergometer test were collected using a handheld MyotonPRO device. Results After the rowing ergometer test, the muscle tone of dominant side PD, LD, and RF were significantly increased (p < 0.05). On the other hand, the muscle stiffness of the non-dominant side LD and RF, as well as the dominant side PD, LD, and RF were significantly increased after the rowing ergometer test (p < 0.05). The muscle tone and stiffness results showed that the dominant side PD, LD, and RF were all significantly higher than the non-dominant side after the rowing ergometer test (p < 0.05), where bilateral PD and RF exhibits moderate asymmetry (5% < symmetry index < 10%). Conclusions After a high-intensity and high-load 2000-m rowing ergometer test, PD, LD, and RF showed increases in muscle tone and stiffness, as well as changes in the symmetry of bilateral muscle mechanical properties.
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Affiliation(s)
- Chun-Hao Chang
- Graduate Institute of Sports Science, National Taiwan Sport University, Taoyuan City, Taiwan
| | - Chin-Shan Ho
- Graduate Institute of Sports Science, National Taiwan Sport University, Taoyuan City, Taiwan
| | - Fang Li
- School of Physical Education, Central China Normal University, Wuhan City, Hubei Province, China
| | - Chao-Yuan Chen
- Graduate Institute of Sports Science, National Taiwan Sport University, Taoyuan City, Taiwan
- Sport Office, National Taipei University of Business, Taipei City, Taiwan
| | - Hung-Chih Yeh
- Graduate Institute of Sports Science, National Taiwan Sport University, Taoyuan City, Taiwan
| | - Chia-An Ho
- Graduate Institute of Sports Science, National Taiwan Sport University, Taoyuan City, Taiwan
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Van de Casteele F, Deprez D, Van Haaren J, Derave W, Lievens E. In professional football the decline in high-intensity running activities from first to second half is more pronounced in players with a fast muscle typology. Scand J Med Sci Sports 2024; 34:e14508. [PMID: 37792860 DOI: 10.1111/sms.14508] [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: 06/07/2023] [Revised: 08/30/2023] [Accepted: 09/19/2023] [Indexed: 10/06/2023]
Abstract
Muscle typology is heterogeneous among national level football (soccer) players, but positional differences remain unclear. Furthermore, fast typology (FT) individuals fatigue more than slow typology (ST) individuals in lab conditions. Therefore, we investigated if muscle typology is different between playing positions and if the decay in high-intensity activities from the first to the second half is larger in FT football players than in ST players. We estimated muscle typology in 147 male professional football players by measuring soleus and gastrocnemius muscle carnosine via proton magnetic resonance spectroscopy. Players were classified as ST, intermediate typology (IT) or FT and categorized as goalkeeper, center back, full back, midfielder, winger or forward. Across four seasons in-game distances covered in multiple running speed, acceleration and deceleration zones were collected during the first and second half. We found no differences in muscle typology between positions (p = 0.412). FT players covered 10.9% more high acceleration distance (>3 m.s-2 ) in the first half than ST players (p = 0.021) and high acceleration distance decay was larger for FT players (-12.4%) than ST (-7.7%; p = 0.006) and IT players (-7.3%; p = 0.010). Moreover, the decline in distance covered in several high-intensity zones tended to be larger in FT players (-11.2% high-intensity >15 km.h-1 ; -12.7% high deceleration <-3 m.s-2 ; -11.5% medium acceleration 2-3 m.s-2 ) than in ST players (-7.1% high-intensity; -8.1% high deceleration; -8.1% medium acceleration; 0.05 < p < 0.1). In conclusion, possessing a particular muscle typology is not required to play any football position at the national level. However, there are indications that FT players might fatigue more toward the end of the game compared to ST players.
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Affiliation(s)
| | | | - Jan Van Haaren
- Club Brugge NV, Knokke-Heist, Belgium
- Department of Computer Science, KU Leuven, Leuven, Belgium
| | - Wim Derave
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Eline Lievens
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
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Yoshida N, Hornsby WG, Sole CJ, Sato K, Stone MH. Effect of Neuromuscular Fatigue on the Countermovement Jump Characteristics: Basketball-Related High-Intensity Exercises. J Strength Cond Res 2024; 38:164-173. [PMID: 37889855 DOI: 10.1519/jsc.0000000000004610] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/29/2023]
Abstract
ABSTRACT Yoshida, N, Hornsby, WG, Sole, CJ, Sato, K, and Stone, MH. Effect of neuromuscular fatigue on the countermovement jump characteristics: basketball related high-intensity exercises. J Strength Cond Res 38(1): 164-173, 2024-The purpose of this study was to investigate basketball specific neuromuscular (NM) fatigue effect on countermovement jump (CMJ) force-time (F-T) curve characteristics. Eleven male college-level basketball athletes performed 6 CMJ trials at 3 baseline (pre) and 6 postexercise time points. The fatiguing protocol consisted of high-intensity basketball related exercises commensurate with basketball game or practice. Typical CMJ (CMJ-TYP) and phase-specific CMJ variables were derived from the F-T curve. Meaningful differences in CMJ performance were examined using effect size (ES) compared with baseline and previous postexercise time point. Baseline with 3 separated measurements demonstrated suitable CMJ variables reproducibility (CV, coefficient of variation). Most CMJ-TYP output and performance variables displayed substantial alterations immediately postexercise (0 hour) and returned to baseline at 24 hours postexercise, whereas the time and rate-related CMJ-TYP and CMJ-phase variables tended to display delayed decline peaked at 2 hours and delayed recovery to baseline at 48 hours postexercise. In conjunction with the return of the time and rate-related variables, CMJ performance displayed supercompensation at 72 hours postexercise. The results indicate altered NM functions with desired CMJ performance, such as jump height, which imply an altered movement strategy at early stage of recovery process. Full recovery may take 48-72 hours. Practitioners are, therefore, advised to monitor variables reflecting NM functions for precise manipulation of the intensity and volume of exercise to avoid prolonging the recovery from NM fatigue.
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Affiliation(s)
- Nobuhisa Yoshida
- Department of Exercise and Sport Sciences, Center of Excellence for Sport Science and Coach Education, East Tennessee State University, Johnson City, Tennessee
| | - W Guy Hornsby
- School of Sport Sciences, College of Applied Human Sciences, West Virginia University, Morgantown, West Virginia
| | - Christopher J Sole
- Department of Health and Human Performance, The Citadel, Charleston, South Carolina; and
| | | | - Michael H Stone
- Department of Exercise and Sport Sciences, Center of Excellence for Sport Science and Coach Education, East Tennessee State University, Johnson City, Tennessee
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Evans NA, Simon JE, Konz SM, Nitz AJ, Uhl TL. Reliability of isokinetic decay slope is superior to using fatigue indices for shoulder horizontal abduction. J Bodyw Mov Ther 2024; 37:372-378. [PMID: 38432831 DOI: 10.1016/j.jbmt.2023.11.060] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 11/21/2023] [Accepted: 11/26/2023] [Indexed: 03/05/2024]
Abstract
INTRODUCTION Reliable and valid measurements for shoulder muscular endurance should be available for clinical use. The posterior shoulder endurance test offers a potential clinical assessment, but its construct validity isn't available. Since a criterion measure of muscular endurance is not available, this study's purpose was to determine a reliable method for testing shoulder muscular endurance using an isokinetic dynamometer. METHODS The test-retest reliability, standard error measurement, and minimal detectable change were calculated on four different paradigms to quantify muscular fatigue using two isokinetic speeds (60°sec-1,180°sec-1). Calculation paradigms included peak torque fatigue index (FI), average torque FI, area-under-the-curve FI, and peak torque decay slope. Testing occurred on two days. Repeated measures analysis of variance compared the two peak torque decay slopes across both testing days. RESULTS Superior reliability was found within the decay slope measurements at both 60°sec-1 (ICC = 0.941) and 180°sec-1 (ICC = 0.764) speeds, with the 60°sec-1 decay slope being the highest reliability between the two angular velocities. There was a greater amount of fatigue in the 60°sec-1 decay slope compared to the 180°sec-1 decay slope. CONCLUSION Using the decay slope of isokinetic shoulder horizontal abduction at 60°sec-1 is a reliable method to validate other muscular endurance clinical measures. Rehabilitation specialists should utilize the decay slope of the isokinetic dynamometry to monitor responsiveness.
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Affiliation(s)
- Neil A Evans
- Division of Physical Therapy, Ohio University, Athens, OH, USA.
| | - Janet E Simon
- School of Applied Health Science and Professions, Ohio Musculoskeletal Neuromuscular Institute, Ohio University, Athens, OH, USA
| | - Suzanne M Konz
- School of Kinesiology, Marshall University, Huntington, WV, USA
| | - Arthur J Nitz
- Department of Physical Therapy, University of Kentucky, Lexington, KY, USA
| | - Timothy L Uhl
- Department of Physical Therapy, University of Kentucky, Lexington, KY, USA
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Li Z, Zhi P, Yuan Z, García-Ramos A, King M. Feasibility of vertical force-velocity profiles to monitor changes in muscle function following different fatigue protocols. Eur J Appl Physiol 2024; 124:365-374. [PMID: 37535143 DOI: 10.1007/s00421-023-05283-4] [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: 01/06/2023] [Accepted: 07/10/2023] [Indexed: 08/04/2023]
Abstract
PURPOSE This study aimed to explore the feasibility of vertical force-velocity (F-V) profiles to monitor changes in muscle function following different fatigue protocols. The between-day reliability of vertical F-V profiles and the acute effects of two fatigue protocols on the changes of lower limb muscle function were examined. METHODS Twelve resistance trained males completed a preliminary session to determine their back squat one-repetition maximum (1RM). Afterwards, they randomly performed two experimental sessions that only differed in the fatigue protocol applied: heavy-load traditional (HLT; five repetitions at 80% 1RM) and light-load ballistic (LLB; five repetitions at 30% 1RM) squat protocols. Participants' vertical F-V profiles (maximum theoretical force [F0], maximum theoretical velocity [v0], and maximum power output [Pmax]) were calculated before and immediately after each fatigue protocol. RESULTS F0, v0, and Pmax showed acceptable to good between-day reliability (coefficient of variation ≤ 4.4%; intraclass correlation coefficient ≥ 0.84). Both fatigue protocols promoted a comparable reduction in Pmax (-10.1% for HLT and -12.2% for LLB). However, the LLB squat protocol reduced more v0 (-9.7%) than F0 (-0.4%), while the HLT squat protocol reduced F0 (-8.4%) more than v0 (-4.1%). CONCLUSIONS The vertical F-V profile can be used to monitor changes in muscle function given its acceptable between-day reliability and its high sensitivity to detect the acute effect of force-oriented and velocity-oriented fatigue protocols on specific maximal neuromuscular capacities.
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Affiliation(s)
- Zhaoqian Li
- Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
| | - Peng Zhi
- Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia
| | - Zhi Yuan
- Sports Performance Research Institute New Zealand (SPRINZ), Auckland University of Technology, Auckland, New Zealand
| | - Amador García-Ramos
- Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain
- Department of Sports Sciences and Physical Conditioning, Faculty of Education, Universidad Católica de la Santísima Concepción, Concepción, Chile
| | - Mark King
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
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Sato S, Ishida K, Tanaka NI, Katayama K. Impact of high-intensity interval hyperpnea on aerobic energy release and inspiratory muscle fatigue. Respir Physiol Neurobiol 2024; 319:104170. [PMID: 37838229 DOI: 10.1016/j.resp.2023.104170] [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: 07/22/2023] [Revised: 09/27/2023] [Accepted: 10/06/2023] [Indexed: 10/16/2023]
Abstract
Respiratory muscle endurance training reportedly has beneficial effects on whole-body endurance performance. We produced a novel high-intensity interval (HII) protocol and characterized the associated physiological responses and respiratory muscle fatigue. Peak oxygen uptake of respiratory muscle (V̇O2peakRM) was estimated during the respiratory incremental test. The HII session consisted of five 3-minute hyperpnea periods at 100%V̇O2peakRM interspersed with 2-minute periods at 40%V̇O2peakRM (25 min total). The high-intensity continuous (HIC) session involved a single time-to-end bout of hyperpnea at 100%V̇O2peakRM. The moderate-intensity continuous (MIC) session involved 25 min of hyperpnea at 60% of maximal voluntary ventilation. V̇O2RM was recorded continuously, and maximal inspiratory pressure (PImax) was assessed before and after the sessions. HII session: V̇O2RM gradually increased as the sets proceeded, whereas PImax decreased significantly. HIC session: V̇O2RM increased progressively, and the time to end was 6.5 ± 0.5 min. PImax decreased significantly. MIC session: V̇O2RM did not change for 25 min, and PImax remained unchanged. The duration of V̇O2RM at near- and supra-maximal levels in the HII session (10 ± 1 min) was longer than that in the HIC session (4 ± 1 min). The decrease in PImax was larger in the HII session (-12 ± 3 %) than MIC session (-4 ± 3 %). The HII protocol is characterized by a longer time to maximally stimulate the aerobic energy system of respiratory muscle than the HIC protocol and greater inspiratory muscle fatigue than the traditional MIC protocol. These results suggest that the HII protocol could enhance the efficacy of respiratory muscle training programs.
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Affiliation(s)
- Suzuna Sato
- Graduate School of Education and Human Development, Nagoya University, Nagoya, Japan
| | - Koji Ishida
- Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan; Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Noriko I Tanaka
- Graduate School of Education and Human Development, Nagoya University, Nagoya, Japan; Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan
| | - Keisho Katayama
- Research Center of Health, Physical Fitness and Sports, Nagoya University, Nagoya, Japan; Graduate School of Medicine, Nagoya University, Nagoya, Japan.
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Pinto MD, Nosaka K, Blazevich AJ. In vivo human medial gastrocnemius fascicle behaviour and belly gear during submaximal eccentric contractions are not affected by concentric fatiguing exercise. J Biomech 2024; 162:111895. [PMID: 38103313 DOI: 10.1016/j.jbiomech.2023.111895] [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: 04/14/2023] [Revised: 11/17/2023] [Accepted: 11/29/2023] [Indexed: 12/19/2023]
Abstract
Changes in muscle geometry and belly gearing during eccentric contractions influence fibre strain and susceptibility to muscle damage. They are modulated by the interaction between connective tissues and intracellular-intrafascicular fluid pressures and external pressures from neighbouring structures. Fatiguing exercise triggers fluid shifts (muscle swelling) and muscle activation changes that may influence these modulators. Our purpose was to measure medial gastrocnemius (MG) geometric changes in vivo during eccentric contractions before and after maximal concentric muscle work to test the hypothesis that fatigue would reduce fascicle rotation and muscle gear and provoke greater fascicle strain. Submaximal eccentric plantar flexor contractions at 40% and 60% of maximal eccentric torque were performed on an isokinetic dynamometer at 5°.s-1 before and immediately after the fatiguing exercise. MG fascicles and muscle-tendon junction were captured using ultrasonography during contractions, allowing quantification of geometric changes, whole-MG length, and belly gear (Δmuscle length/Δfascicle length). Triceps surae (TS) activation was estimated using surface electromyography and the distribution of activations between synergistic muscles was then determined. After exercise, concentric torque decreased ∼39% and resting muscle thickness increased by 4%, indicating muscle fatigue and swelling, respectively. While soleus (Sol) activation and the Sol/TS ratio increased, no changes in MG, MG/TS ratio or fascicle rotation during the contraction were detected. Thus, fascicle lengthening and belly gear remained unaltered. Changes in muscle thickness during contraction was also similar before and after exercise, suggesting that changes in muscle shape were relatively unaffected by the exercise. Consequently, the muscle maintained mechanical integrity after the fatiguing muscle work.
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Affiliation(s)
- Matheus Daros Pinto
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia.
| | - Kazunori Nosaka
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia.
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Silva Vilela Terra AM, Santos PDG, Gomes M, Santos ATS, Pezarat-Correia P. Effects of auriculotherapy on muscle fatigue: A randomized crossover trial. J Bodyw Mov Ther 2024; 37:209-219. [PMID: 38432808 DOI: 10.1016/j.jbmt.2023.11.053] [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: 03/02/2023] [Revised: 11/15/2023] [Accepted: 11/24/2023] [Indexed: 03/05/2024]
Abstract
OBJECTIVE This study aimed investigate the effect of auriculotherapy on exercise-induced muscle fatigue, isometric torque production, and surface electromyographic activity (EMG). METHODS Design: Randomized Crossover Trial. The sample consisted of 18 males' volunteers who exercised at least twice a week. THE SAMPLE WAS RANDOMLY ASSIGNED TO TWO GROUPS Placebo Group (n = 9) and Treated Group (n = 9), and after seven days, the groups were crossed. The data analysis included 18 participants in each group. MAIN OUTCOME MEASURE The muscle fatigue index, force production rate, and EMG of the quadriceps were used for evaluation. The evaluation moments included baseline pre-fatigue, baseline post-fatigue, 48 h post-intervention pre-fatigue, and 48 h post-intervention post-fatigue. Mixed two-way test ANOVA was used to compare times and groups. RESULTS The fatigue index for peak torque and work showed no significant effect on time, groups, or interaction (p > 0.05). However, for isometric torque, force production rate, and EMG median frequency and average, the results indicate a positive change in values over time (p < 0.05) (with little practical relevance), with no differences observed between the groups or interaction (p > 0.05). CONCLUSIONS In conclusion, auriculotherapy had no effect on exercise-induced muscle fatigue, isometric torque production, and surface electromyographic activity.
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Affiliation(s)
- Andréia Maria Silva Vilela Terra
- Neuromuscular Research Lab, Faculty of Human Kinetics, Lisbon University, 1499-002, Cruz Quebrada-Dafundo, Portugal; Human Performance Research Laboratory, Alfenas Federal University, 37133-840, Santa Clara, Alfenas, MG, Brazil.
| | - Paulo Duarte Guia Santos
- Neuromuscular Research Lab, Faculty of Human Kinetics, Lisbon University, 1499-002, Cruz Quebrada-Dafundo, Portugal
| | - Miguel Gomes
- Neuromuscular Research Lab, Faculty of Human Kinetics, Lisbon University, 1499-002, Cruz Quebrada-Dafundo, Portugal
| | - Adriana Teresa Silva Santos
- Human Performance Research Laboratory, Alfenas Federal University, 37133-840, Santa Clara, Alfenas, MG, Brazil
| | - Pedro Pezarat-Correia
- Neuromuscular Research Lab, Faculty of Human Kinetics, Lisbon University, 1499-002, Cruz Quebrada-Dafundo, Portugal; CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1499-002, Cruz Quebrada, Dafundo, Portugal
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Schirinzi E, Ricci G, Torri F, Mancuso M, Siciliano G. Biomolecules of Muscle Fatigue in Metabolic Myopathies. Biomolecules 2023; 14:50. [PMID: 38254650 PMCID: PMC10812926 DOI: 10.3390/biom14010050] [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: 10/09/2023] [Revised: 12/20/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024] Open
Abstract
Metabolic myopathies are a group of genetic disorders that affect the normal functioning of muscles due to abnormalities in metabolic pathways. These conditions result in impaired energy production and utilization within muscle cells, leading to limitations in muscle function with concomitant occurrence of related signs and symptoms, among which fatigue is one of the most frequently reported. Understanding the underlying molecular mechanisms of muscle fatigue in these conditions is challenging for the development of an effective diagnostic and prognostic approach to test targeted therapeutic interventions. This paper outlines the key biomolecules involved in muscle fatigue in metabolic myopathies, including energy substrates, enzymes, ion channels, and signaling molecules. Potential future research directions in this field are also discussed.
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Klich S, Michalik K, Rajca J, Ficek K, Fernández-de-Las-Peñas C, Kawczynski A, Madeleine P. Fatigue-induced Alterations of the Patellar Tendon in Elite Sprint Track Cyclists. Int J Sports Med 2023; 44:995-1002. [PMID: 36690028 DOI: 10.1055/a-2018-2781] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
This study aims to investigate morphological and mechanical properties and echogenicity of the patellar tendon (PT) after acute fatigue-induced alterations in sprint track cyclists. Fourteen elite track cyclists participated in this study. The exercise protocol consisted of three maximal start accelerations (over a distance of 62.5 m), one maximal start acceleration (at both 125 m and 250 m), and sprints from the standing start. Immediately after testing all measurements, PT stiffness and thickness were set at 5-10-15-20 mm distal from the apex of the patella and 5-10 mm proximal to the tibial tuberosity. CSA was set at proximal, middle, and distal, while echogenicity was at proximal and distal points. The results showed significant increases in PT stiffness at all reference points after start acceleration (p<0.001). PT thickness showed similar results for stiffness, except for location placed at TT-5 (p<0.001). CSA increased significantly in proximal, middle, and distal regions (p<0.001), while echogenicity of the tendon increased in proximal and distal regions (p<0.001) after start acceleration. Regional-dependent alterations of PT thickness and stiffness may be related to anatomical and physiological mechanisms due to acute isometric contraction in the initial phase of standing start. Tendon echogenicity might be also useful in monitoring tendon mechanical properties and defining acute fatigue-induced changes.
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Affiliation(s)
- Sebastian Klich
- Department of Paralympic Sport, Wroclaw University of Health and Sport Sciences, Wrocław, Poland
| | - Kamil Michalik
- Department of Human Motor Skills, Wroclaw University of Health and Sport Sciences, Wrocław, Poland
| | - Jolanta Rajca
- Department of Science, Innovation and Development, Galen-Orthopaedics, Bieruń, Poland
| | - Krzysztof Ficek
- Department of Physiotherapy, Jerzy Kukuczka Academy of Physical Education In Katowice, Katowice, Poland
- Department of Science, Innovation and Development, Galen-Orthopaedics, Bieruń, Poland
| | - Cesar Fernández-de-Las-Peñas
- Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcón, Spain
- Cátedra Institucional En Docencia, Clínica E Investigación En Fisioterapia: Terapia Manual, Punción Seca Y Ejercicio Terapéutico, Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Adam Kawczynski
- Department of Biomechanics and Sport Engineering, Gdansk University of Physical Education and Sport, Gdansk, Poland
| | - Pascal Madeleine
- Health Science and Technology, Aalborg University, Aalborg, Denmark
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40
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Kwon Y, Chilton LK, Kim H, Franz JR. The effect of prolonged walking on leg muscle activity patterns and vulnerability to perturbations. J Electromyogr Kinesiol 2023; 73:102836. [PMID: 37979335 PMCID: PMC10842795 DOI: 10.1016/j.jelekin.2023.102836] [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: 01/14/2023] [Revised: 10/04/2023] [Accepted: 11/03/2023] [Indexed: 11/20/2023] Open
Abstract
Understanding the consequences and ecological relevance of muscle fatigue is important to guide the development of strategies to preserve independence. However, few studies have examined walking-related fatigue and the effects on walking instability. Our purpose was to investigate the effects of prolonged walking on leg muscle activity and vulnerability to balance perturbations. Eighteen healthy young adults completed a 30-min walking trial at their preferred walking speed while leg muscle activities were recorded. Before and after the 30-min walk, participants responded to five 5% body weight lateral force perturbations. Time-frequency analysis with wavelet transformation and principal component analyses assessed neuromuscular adaptations of muscles to prolonged walking. Following prolonged walking, we observed a time-dependent increase in EMG intensities at slower frequencies for the soleus and tibialis anterior and a decrease in mean amplitudes for the soleus, lateral gastrocnemius, and semitendinosus. Mean mediolateral CoM displacement following perturbations averaged 21% larger after the 30-min walk. Our results suggest that walking for 30 min at a comfortable speed elicits complex neuromuscular adaptations indicative of local muscle fatigue and an increased vulnerability to walking balance perturbations. These findings could inform fatigue monitoring systems or walking assistive devices aimed at reducing walking-related fatigue and maintaining independent mobility.
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Affiliation(s)
- Yujin Kwon
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - Lillian K Chilton
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC, USA
| | - Hoon Kim
- Department of Sports Medicine, Soonchunhyang University, Asan, South Korea; Department of Software Convergence, Soonchunhyang University, Asan, South Korea
| | - Jason R Franz
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC, USA.
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Vigh-Larsen JF. Muscle glycogen depletion: a weak-link rendering muscle cells prone to potassium-induced fatigue? J Physiol 2023; 601:5585-5586. [PMID: 38041642 DOI: 10.1113/jp285818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2023] Open
Affiliation(s)
- Jeppe F Vigh-Larsen
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
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Ruiz-Alias SA, Pérez-Castilla A, Soto-Hermoso VM, García-Pinillos F. The Effect of Using Marathon Shoes or Track Spikes on Neuromuscular Fatigue caused by a Long-distance Track Training Session. Int J Sports Med 2023; 44:976-982. [PMID: 36379468 DOI: 10.1055/a-1979-5849] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study aims to compare the effect of the Nike ZoomX Dragonfly track spikes and the Nike ZoomX VaporflyNext% 2 marathon shoes on the fatigue manifestations present over and after a long-distance track training session. Thirteen highly trained athletes completed two training sessions (i. e., 9- and 3-minute time trials with complete recovery) with the aforementioned footwear models. The pace, ground contact time, and stride length were measured over the time trials, and maximal countermovement jumps were performed previously and after the training session. The results revealed that, although there was no significant interaction in the pace distribution (p≥0.072), athletes tend to be only able to increase the pace at the last lap with the marathon shoes (5.4 meters [-3.7 to 14.5 meters]) meanwhile with the track spikes it further decreased (-3.1 meters [-9.8 to 3.6 meters]). A reduced ground contact time over the session (p=0.025) and a tendency toward increasing stride length (p=0.09) in the last time trial were observed. The significant interaction on the countermovement jump height (p=0.023; Track spikes: -5.60%; Marathon shoes: 0.61%) also indicates that footwear influences the resulted allostatic load.
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Affiliation(s)
| | | | | | - Felipe García-Pinillos
- Department of Physical Education and Sport, University of Granada, Granada, Spain
- Physical Education, Sports and Recreation, Universidad de La Frontera, Temuco, Chile
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Ghirigato E, Terenzi F, Baglivo M, Zanetti N, Baldo F, Murru FM, Bobbo M, Barbi E, Zeviani M, Bruno I, Lamantea E. A new family with a case of severe early-onset muscle fatigue and a peculiar maternally inherited painful swelling in chewing muscles associated with homoplasmic m.15992A>T mutation in mitochondrial tRNA Pro. Neuromuscul Disord 2023; 33:972-977. [PMID: 38030461 DOI: 10.1016/j.nmd.2023.11.001] [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: 04/27/2023] [Revised: 09/12/2023] [Accepted: 11/01/2023] [Indexed: 12/01/2023]
Abstract
A 16-year-old boy was evaluated for a history of exercise-induced fatigability associated with nausea even after minimal effort, lower limbs muscle hypotrophy, and swelling of the masseter muscles after chewing. Laboratory tests were remarkable for hyperlactatemia and metabolic acidosis after short physical activity. The muscle biopsy showed non-specific mitochondrial alterations and an increase in intrafibral lipids. Biochemical analysis showed reduced activity of the respiratory chain complexes. Mitochondrial DNA sequencing revealed the presence of a homoplasmic variant m.15992A>T in the MT-TP gene, coding for the mt-tRNAPro in the patient, in his mother and in his brother. Pathogenic or likely pathogenic variants in MT-TP gene are rare. They are responsible for different clinical presentation, almost ever involving the muscle tissue. We report the first family with exercise-induced muscle weakness and swelling of the chewing muscles due to m.15992A>T variant in absence of J1c10 haplogroup, confirming its pathogenicity.
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Affiliation(s)
| | | | - Mirko Baglivo
- Unit of Medical Genetics and Neurogenetics, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Nadia Zanetti
- Unit of Medical Genetics and Neurogenetics, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Francesco Baldo
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy.
| | - Flora Maria Murru
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy
| | - Marco Bobbo
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy
| | - Egidio Barbi
- University of Trieste, Italy; Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy
| | - Massimo Zeviani
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy
| | - Irene Bruno
- Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste, Italy
| | - Eleonora Lamantea
- Unit of Medical Genetics and Neurogenetics, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
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Otálora S, Segatto MEV, Monteiro ME, Múnera M, Díaz CAR, Cifuentes CA. Data-Driven Approach for Upper Limb Fatigue Estimation Based on Wearable Sensors. Sensors (Basel) 2023; 23:9291. [PMID: 38005677 PMCID: PMC10674769 DOI: 10.3390/s23229291] [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] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/08/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023]
Abstract
Muscle fatigue is defined as a reduced ability to maintain maximal strength during voluntary contraction. It is associated with musculoskeletal disorders that affect workers performing repetitive activities, affecting their performance and well-being. Although electromyography remains the gold standard for measuring muscle fatigue, its limitations in long-term work motivate the use of wearable devices. This article proposes a computational model for estimating muscle fatigue using wearable and non-invasive devices, such as Optical Fiber Sensors (OFSs) and Inertial Measurement Units (IMUs) along the subjective Borg scale. Electromyography (EMG) sensors are used to observe their importance in estimating muscle fatigue and comparing performance in different sensor combinations. This study involves 30 subjects performing a repetitive lifting activity with their dominant arm until reaching muscle fatigue. Muscle activity, elbow angles, and angular and linear velocities, among others, are measured to extract multiple features. Different machine learning algorithms obtain a model that estimates three fatigue states (low, moderate and high). Results showed that between the machine learning classifiers, the LightGBM presented an accuracy of 96.2% in the classification task using all of the sensors with 33 features and 95.4% using only OFS and IMU sensors with 13 features. This demonstrates that elbow angles, wrist velocities, acceleration variations, and compensatory neck movements are essential for estimating muscle fatigue. In conclusion, the resulting model can be used to estimate fatigue during heavy lifting in work environments, having the potential to monitor and prevent muscle fatigue during long working shifts.
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Affiliation(s)
- Sophia Otálora
- Telecommunications Laboratory (LabTel), Electrical Engineering Department, Federal University of Espírito Santo (UFES), Vitória 290075-910, Brazil; (S.O.); (M.E.V.S.); (C.A.R.D.)
| | - Marcelo E. V. Segatto
- Telecommunications Laboratory (LabTel), Electrical Engineering Department, Federal University of Espírito Santo (UFES), Vitória 290075-910, Brazil; (S.O.); (M.E.V.S.); (C.A.R.D.)
| | | | - Marcela Múnera
- Bristol Robotics Laboratory, University of the West of England, Bristol BS16 1QY, UK;
| | - Camilo A. R. Díaz
- Telecommunications Laboratory (LabTel), Electrical Engineering Department, Federal University of Espírito Santo (UFES), Vitória 290075-910, Brazil; (S.O.); (M.E.V.S.); (C.A.R.D.)
| | - Carlos A. Cifuentes
- Bristol Robotics Laboratory, University of the West of England, Bristol BS16 1QY, UK;
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Nakabayashi M, Tsukada Y, Fukui H, Endo K. Analysis of Operator's Muscle Fatigue Using Time-Frequency Analysis During Suture Ligation Training. Curr Probl Surg 2023; 60:101381. [PMID: 37993241 DOI: 10.1016/j.cpsurg.2023.101381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 08/07/2023] [Indexed: 11/24/2023]
Affiliation(s)
- Masataka Nakabayashi
- Mechanical Systems Engineering Course, Department of Fundamental Engineering, School of Engineering, Utsunomiya, Tochigi, Japan.
| | - Yuta Tsukada
- Graduate Program in Mechanical and Intelligent Engineering, Graduate School of Regional Development and Creativity, Utsunomiya University, Utsunomiya, Tochigi, Japan
| | - Hiroaki Fukui
- Net Learning Holdings Inc., 9F Nishi-Shinjuku Prime Square, Shinjuku-ku, Tokyo, Japan
| | - Kazuhiro Endo
- Department of Surgery, Medical Education & Training Core Center for Department of Advanced Medical Technology, Jichi Medical University, Shimotsuke, Tochigi, Japan
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Dos Anjos L, Rodrigues F, Scataglini S, Baptista RR, Lobo da Costa P, Vieira MF. Trunk variability and local dynamic stability during gait after generalized fatigue induced by incremental exercise test in young women in different phases of the menstrual cycle. PeerJ 2023; 11:e16223. [PMID: 37901461 PMCID: PMC10607266 DOI: 10.7717/peerj.16223] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 09/11/2023] [Indexed: 10/31/2023] Open
Abstract
Purpose The purpose of this study was to identify how generalized fatigue along with hormonal changes throughout the menstrual cycle affects trunk variability and local dynamic stability during gait. Methods General fatigue was induced by an incremental test on a treadmill, and the menstrual cycle was divided into three phases: follicular, ovulatory, and luteal. Twenty-six healthy, young volunteers (aged 18 to 28 years) who did not use oral contraceptives or other hormonal drugs with a regular menstrual cycle participated in the study. They walked on the treadmill for 4 min at the preferred speed, before the incremental test, followed by four sets of 4 min alternating between walking, also at preferred speed, and resting. From trunk kinematic data, the following were extracted: the mean of the standard deviation along strides, as a measure of variability, and the maximum Lyapunov exponent, as a measure of local dynamic stability (LDS). Results After the incremental test, variability increased, and LDS decreased. However, they showed a tendency to return to the initial value faster in women compared to previous results for men. In the follicular phase, which has less hormonal release, the volunteers had an almost complete recovery in LDS soon after the first rest interval, suggesting that female hormones can interfere with fatigue recovery. Nevertheless, concerning the LDS, it was significantly lower in the luteal phase than in the follicular phase. Conclusion Women that are not taking oral contraceptives should be aware that they are susceptible to increased gait instabilities in the pre-menstrual phase after strenuous activities.
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Affiliation(s)
- Ludmila Dos Anjos
- Bioengineering and Biomechanics Laboratory, Federal University of Goiás, Goiânia, Brazil
| | - Fábio Rodrigues
- Bioengineering and Biomechanics Laboratory, Federal University of Goiás, Goiânia, Brazil
| | - Sofia Scataglini
- Department of Product Development, Faculty of Design Science, University of Antwerp, Antwerp, Belgium
| | - Rafael Reimann Baptista
- School of Health and Life Sciences, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - Paula Lobo da Costa
- Department of Physical Education, Federal University of São Carlos, São Carlos, Brazil
| | - Marcus Fraga Vieira
- Bioengineering and Biomechanics Laboratory, Federal University of Goiás, Goiânia, Brazil
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Cheng Y, Lee C, Lee M, Hsu H, Lin J, Huang C, Watanabe K. Effects of heat-killed Lactiplantibacillus plantarum TWK10 on exercise performance, fatigue, and muscle growth in healthy male adults. Physiol Rep 2023; 11:e15835. [PMID: 37816697 PMCID: PMC10564709 DOI: 10.14814/phy2.15835] [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: 05/12/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 10/12/2023] Open
Abstract
Consumption of Lactiplantibacillus plantarum TWK10 (TWK10) has beneficial probiotic effects, improves exercise endurance performance, regulates body composition, and mitigates aging-related problems in mice and humans. Here, we investigated the effects of heat-killed TWK10 on exercise endurance performance, muscle weight and strength, fatigue, and body composition in a double-blind, placebo-controlled clinical trial. Thirty healthy males aged 20-40 years were assigned to the Control group or heat-killed TWK10 group (TWK10-HK) in a balanced order according to each individual's initial maximal oxygen uptake. After 6-week administration, the exercise endurance time in the TWK10-HK was significantly increased (p = 0.0028) compared with that in the Control group. The grip strength on the right and left hands of the subjects was significantly increased (p = 0.0002 and p = 0.0140, respectively) in the TWK10-HK compared with that in the Control group. Administration of heat-killed TWK10 resulted in a significant increase (p = 0.0275) in muscle weight. After 6-week administration, serum lactate, and ammonia levels were significantly lower in the TWK10-HK group than in the Control group during the exercise and recovery periods. These findings demonstrate that heat-killed TWK10 has significant potential to be used as a postbiotic for humans.
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Affiliation(s)
- Yi‐Chen Cheng
- Culture Collection & Research Institute, SYNBIO TECH IncorporationKaohsiungTaiwan
| | - Chia‐Chia Lee
- Culture Collection & Research Institute, SYNBIO TECH IncorporationKaohsiungTaiwan
| | - Mon‐Chien Lee
- Graduate Institute of Sports ScienceNational Taiwan Sport UniversityTaoyuanTaiwan
| | - Han‐Yin Hsu
- Culture Collection & Research Institute, SYNBIO TECH IncorporationKaohsiungTaiwan
| | - Jin‐Seng Lin
- Culture Collection & Research Institute, SYNBIO TECH IncorporationKaohsiungTaiwan
| | - Chi‐Chang Huang
- Graduate Institute of Sports ScienceNational Taiwan Sport UniversityTaoyuanTaiwan
| | - Koichi Watanabe
- Culture Collection & Research Institute, SYNBIO TECH IncorporationKaohsiungTaiwan
- Department of Animal Science and TechnologyNational Taiwan UniversityTaipeiTaiwan
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48
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Patel E, Saikali S, Mascarenhas A, Moschovas MC, Patel V. Muscle fatigue and physical discomfort reported by surgeons performing robotic-assisted surgery: a multinational survey. J Robot Surg 2023; 17:2009-2018. [PMID: 37115418 DOI: 10.1007/s11701-023-01608-9] [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: 02/23/2023] [Accepted: 04/23/2023] [Indexed: 04/29/2023]
Abstract
Robotic surgery has revolutionized surgical procedures and has provided many advantages over traditional laparoscopic and open surgeries. Despite the benefits, there are concerns about the physical discomfort and injuries that may be experienced by surgeons during robotic surgeries. This study aimed to identify the most common muscle groups implicated in robotic surgeons' physical pain and discomfort. A questionnaire was created and sent to 1000 robotic surgeons worldwide, with a response rate of 30.9%. The questionnaire consisted of thirty-seven multiple-choice questions, three short answer questions, and one multiple-option question pertaining to the surgeon's workload as well as their level of discomfort while and after performing surgery. The primary endpoint was to identify the most common muscle groups implicated in robotic surgeons' physical pain and discomfort. Secondary endpoints were to highlight any correlation between age group, BMI, hours of operation, workout regimen, and significant pain levels. The results showed that the most common muscle groups implicated in physical pain and discomfort were the neck, shoulders, and back, with many of the surgeons attributing their muscular fatigue and discomfort to the ergonomic design of the surgeon console. Despite the level of surgeon comfort the robotic console provides when compared to other conventional forms of surgery, the findings suggest the need for better ergonomic practices during robotic surgeries to minimize physical discomfort and injuries for surgeons.
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Affiliation(s)
- Ela Patel
- Global Robotics Institute, AdventHealth, Celebration, FL, USA
- Stanford University, Stanford, CA, 94305, USA
| | - Shady Saikali
- Global Robotics Institute, AdventHealth, Celebration, FL, USA.
| | | | - Marcio Covas Moschovas
- Global Robotics Institute, AdventHealth, Celebration, FL, USA
- University of Central Florida (UCF), Orlando, FL, USA
| | - Vipul Patel
- Global Robotics Institute, AdventHealth, Celebration, FL, USA
- University of Central Florida (UCF), Orlando, FL, USA
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49
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DiVito D, Wellik A, Burfield J, Peterson J, Flickinger J, Tindall A, Albanowski K, Vishnubhatt S, MacMullen L, Martin I, Muraresku C, McCormick E, George-Sankoh I, McCormack S, Goldstein A, Ganetzky R, Yudkoff M, Xiao R, Falk MJ, R Mascarenhas M, Zolkipli-Cunningham Z. Optimized Nutrition in Mitochondrial Disease Correlates to Improved Muscle Fatigue, Strength, and Quality of Life. Neurotherapeutics 2023; 20:1723-1745. [PMID: 37723406 PMCID: PMC10684455 DOI: 10.1007/s13311-023-01418-9] [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] [Accepted: 07/26/2023] [Indexed: 09/20/2023] Open
Abstract
We sought to prospectively characterize the nutritional status of adults ≥ 19 years (n = 22, 27% males) and children (n = 38, 61% male) with genetically-confirmed primary mitochondrial disease (PMD) to guide development of precision nutritional support strategies to be tested in future clinical trials. We excluded subjects who were exclusively tube-fed. Daily caloric requirements were estimated using World Health Organization (WHO) equations to predict resting energy expenditure (REE) multiplied by an activity factor (AF) based on individual activity levels. We developed a Mitochondrial Disease Activity Factors (MOTIVATOR) score to encompass the impact of muscle fatigue typical of PMD on physical activity levels. PMD cohort daily diet intake was estimated to be 1,143 ± 104.1 kcal in adults (mean ± SEM, 76.2% of WHO-MOTIVATOR predicted requirement), and 1,114 ± 62.3 kcal in children (86.4% predicted). A total of 11/22 (50%) adults and 18/38 (47.4%) children with PMD consumed ≤ 75% predicted daily Kcal needs. Malnutrition was identified in 16/60 (26.7%) PMD subjects. Increased protein and fat intake correlated with improved muscle strength in those with insufficient daily Kcal intake (≤ 75% predicted); higher protein and fat intake correlated with decreased muscle fatigue; and higher protein, fat, and carbohydrate intake correlated with improved quality of life (QoL). These data demonstrate the frequent occurrence of malnutrition in PMD and emphasize the critical need to devise nutritional interventions to optimize clinical outcomes.
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Affiliation(s)
- Donna DiVito
- Clinical Nutrition Department, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Amanda Wellik
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jessica Burfield
- Clinical Nutrition Department, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - James Peterson
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jean Flickinger
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Alyssa Tindall
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Division of Gastroenterology and Nutrition, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Kimberly Albanowski
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Shailee Vishnubhatt
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Laura MacMullen
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Isaac Martin
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Colleen Muraresku
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Elizabeth McCormick
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Ibrahim George-Sankoh
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Shana McCormack
- Division of Endocrinology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Amy Goldstein
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Rebecca Ganetzky
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Marc Yudkoff
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Rui Xiao
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Marni J Falk
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Maria R Mascarenhas
- Division of Gastroenterology and Nutrition, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Zarazuela Zolkipli-Cunningham
- Department of Pediatrics, Division of Human Genetics, Mitochondrial Medicine Frontier Program, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
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50
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Saneto RP, Karaa A. Optimized Nutrition in Mitochondrial Diseases Correlates with Improved Muscle Fatigue, Strength, and Quality of Life: You Are What You Eat, or Are You? Neurotherapeutics 2023; 20:1694-1695. [PMID: 37770714 PMCID: PMC10684433 DOI: 10.1007/s13311-023-01445-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2023] [Indexed: 09/30/2023] Open
Affiliation(s)
- Russell P Saneto
- Center for Integrated Brain Research, Division of Pediatric Neurology, Mitochondrial Medicine and Metabolism, Neuroscience Institute, Seattle Children's Hospital/University of Washington, Seattle, WA, 98105, USA.
| | - Amel Karaa
- Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
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