1
|
Zarzissi S, Zghal F, Bouchiba M, Rebai H, Fekih N, Bouzid MA. Delayed neuromuscular fatigue recovery unveils reduced fatigue tolerance in elderly following maximal intermittent exercise. Eur J Appl Physiol 2024; 124:2941-2949. [PMID: 38758411 DOI: 10.1007/s00421-024-05499-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 04/30/2024] [Indexed: 05/18/2024]
Abstract
The aim of the study was to assess the impact of aging on neuromuscular fatigue and recovery. Ten young (23.08 ± 1.43 years) and older (61.19 ± 1.80 years) males performed an intermittent maximal isometric exercise with the knee extensors followed by 27 min of recovery. Maximal voluntary contraction (MVC), total work (W'), voluntary activation (VA), potentiated resting twitch (Ptw), and electromyography (EMG) were recorded and then analyzed. Peripheral and central fatigue following exercise were lower in old compared to young (- 29.99% vs. - 42.68% and - 14.55 vs. - 20.02%; P < 0.05, respectively). Despite old performing 50% less work, RMS/Mmax reduction was similar between old and young (- 26.46% vs. - 29.93%; P > 0.05, respectively). During the recovery period, our results showed that recovery of the MVC was impaired for old (14.93% for old vs. 30.66% for young) and still incomplete until 27 min.VA increased significantly compared to post exercise after 1 min only for young (P = 0.001), potentially affecting the recovery pattern of MVC during the early phase due to their significant correlation (r2 = 0.58, P = 0.01). Peripheral fatigue recovery was also lower for old (11.18% vs. 18.72%; P < 0.001), and both groups failed to recover their baseline value (both P < 0.005). The lower peripheral and central fatigue observed in elderly following exercise appears for the first instance as a fatigue resistance. However, the delayed neuromuscular recovery reveals instead a reduced fatigue tolerance reflecting age-related alteration within contractile properties and/or within central nervous system.
Collapse
Affiliation(s)
- Slim Zarzissi
- High Institute of Sport and Physical Education, Education, Motor Skills, Sport and Health (EM2S) Laboratory, University of Sfax, LR19JS01, Sfax, Tunisia.
| | - Firas Zghal
- High Institute of Sport and Physical Education, Education, Motor Skills, Sport and Health (EM2S) Laboratory, University of Sfax, LR19JS01, Sfax, Tunisia
| | - Mustapha Bouchiba
- High Institute of Sport and Physical Education, Education, Motor Skills, Sport and Health (EM2S) Laboratory, University of Sfax, LR19JS01, Sfax, Tunisia
| | - Haithem Rebai
- Tunisian Research Laboratory 'Sports Performance Optimization', National Center of Medicine and Science in Sports (CNMSS), (CNMSS-LR09SEP01), Tunis, Tunisia
| | - Nadia Fekih
- High Institute of Sport and Physical Education, Education, Motor Skills, Sport and Health (EM2S) Laboratory, University of Sfax, LR19JS01, Sfax, Tunisia
| | - Mohamed Amine Bouzid
- High Institute of Sport and Physical Education, Education, Motor Skills, Sport and Health (EM2S) Laboratory, University of Sfax, LR19JS01, Sfax, Tunisia
| |
Collapse
|
2
|
Souchet AD, Lourdeaux D, Burkhardt JM, Hancock PA. Design guidelines for limiting and eliminating virtual reality-induced symptoms and effects at work: a comprehensive, factor-oriented review. Front Psychol 2023; 14:1161932. [PMID: 37359863 PMCID: PMC10288216 DOI: 10.3389/fpsyg.2023.1161932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 05/16/2023] [Indexed: 06/28/2023] Open
Abstract
Virtual reality (VR) can induce side effects known as virtual reality-induced symptoms and effects (VRISE). To address this concern, we identify a literature-based listing of these factors thought to influence VRISE with a focus on office work use. Using those, we recommend guidelines for VRISE amelioration intended for virtual environment creators and users. We identify five VRISE risks, focusing on short-term symptoms with their short-term effects. Three overall factor categories are considered: individual, hardware, and software. Over 90 factors may influence VRISE frequency and severity. We identify guidelines for each factor to help reduce VR side effects. To better reflect our confidence in those guidelines, we graded each with a level of evidence rating. Common factors occasionally influence different forms of VRISE. This can lead to confusion in the literature. General guidelines for using VR at work involve worker adaptation, such as limiting immersion times to between 20 and 30 min. These regimens involve taking regular breaks. Extra care is required for workers with special needs, neurodiversity, and gerontechnological concerns. In addition to following our guidelines, stakeholders should be aware that current head-mounted displays and virtual environments can continue to induce VRISE. While no single existing method fully alleviates VRISE, workers' health and safety must be monitored and safeguarded when VR is used at work.
Collapse
Affiliation(s)
- Alexis D. Souchet
- Heudiasyc UMR 7253, Alliance Sorbonne Université, Université de Technologie de Compiègne, CNRS, Compiègne, France
- Institute for Creative Technologies, University of Southern California, Los Angeles, CA, United States
| | - Domitile Lourdeaux
- Heudiasyc UMR 7253, Alliance Sorbonne Université, Université de Technologie de Compiègne, CNRS, Compiègne, France
| | | | - Peter A. Hancock
- Department of Psychology, University of Central Florida, Orlando, FL, United States
| |
Collapse
|
3
|
Hucteau E, Mallard J, Pivot X, Schott R, Pflumio C, Trensz P, Favret F, Pagano AF, Hureau TJ. Exacerbated central fatigue and reduced exercise capacity in early-stage breast cancer patients treated with chemotherapy. Eur J Appl Physiol 2023:10.1007/s00421-023-05177-5. [PMID: 36939876 DOI: 10.1007/s00421-023-05177-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 03/07/2023] [Indexed: 03/21/2023]
Abstract
PURPOSE The present study aimed to characterize the etiology of exercise-induced neuromuscular fatigue and its consequences on the force-duration relationship to provide mechanistic insights into the reduced exercise capacity characterizing early-stage breast cancer patients. METHODS Fifteen early-stage breast cancer patients and fifteen healthy women performed 60 maximal voluntary isometric quadriceps contractions (MVCs, 3 s of contraction, 2 s of relaxation). The critical force was determined as the mean force of the last six contractions, while W' was calculated as the force impulse generated above the critical force. Quadriceps muscle activation during exercise was estimated from vastus lateralis, vastus medialis and rectus femoris EMG. Central and peripheral fatigue were quantified via changes in pre- to postexercise quadriceps voluntary activation (ΔVA) and quadriceps twitch force (ΔQTw) evoked by supramaximal electrical stimulation, respectively. RESULTS Early-stage breast cancer patients demonstrated lower MVC than controls preexercise (- 15%, P = 0.022), and this reduction persisted throughout the 60-MVC exercise (- 21%, P = 0.002). The absolute critical force was lower in patients than in controls (144 ± 29N vs. 201 ± 47N, respectively, P < 0.001), while W' was similar (P = 0.546), resulting in lower total work done (- 23%, P = 0.001). This was associated with lower muscle activation in the vastus lateralis (P < 0.001), vastus medialis (P = 0.003) and rectus femoris (P = 0.003) in patients. Immediately following exercise, ΔVA showed a greater reduction in patients compared to controls (- 21.6 ± 13.3% vs. - 12.6 ± 7.7%, P = 0.040), while ΔQTw was similar (- 60.2 ± 13.2% vs. - 52.8 ± 19.4%, P = 0.196). CONCLUSION These findings support central fatigue as a primary cause of the reduction in exercise capacity characterizing early-stage breast cancer patients treated with chemotherapy. CLINICAL TRIALS REGISTRATION No. NCT04639609-November 20, 2020.
Collapse
Affiliation(s)
- Elyse Hucteau
- Biomedicine Research Centre of Strasbourg (CRBS), Mitochondria, Oxidative Stress, and Muscular Protection Laboratory (UR 3072), Strasbourg, France
- Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081, Strasbourg Cedex, France
- Institute of Cancerology Strasbourg Europe (ICANS), Strasbourg, France
| | - Joris Mallard
- Biomedicine Research Centre of Strasbourg (CRBS), Mitochondria, Oxidative Stress, and Muscular Protection Laboratory (UR 3072), Strasbourg, France
- Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081, Strasbourg Cedex, France
- Institute of Cancerology Strasbourg Europe (ICANS), Strasbourg, France
| | - Xavier Pivot
- Institute of Cancerology Strasbourg Europe (ICANS), Strasbourg, France
| | - Roland Schott
- Institute of Cancerology Strasbourg Europe (ICANS), Strasbourg, France
| | - Carole Pflumio
- Institute of Cancerology Strasbourg Europe (ICANS), Strasbourg, France
| | - Philippe Trensz
- Institute of Cancerology Strasbourg Europe (ICANS), Strasbourg, France
| | - Fabrice Favret
- Biomedicine Research Centre of Strasbourg (CRBS), Mitochondria, Oxidative Stress, and Muscular Protection Laboratory (UR 3072), Strasbourg, France
- Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081, Strasbourg Cedex, France
| | - Allan F Pagano
- Biomedicine Research Centre of Strasbourg (CRBS), Mitochondria, Oxidative Stress, and Muscular Protection Laboratory (UR 3072), Strasbourg, France
- Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081, Strasbourg Cedex, France
| | - Thomas J Hureau
- Biomedicine Research Centre of Strasbourg (CRBS), Mitochondria, Oxidative Stress, and Muscular Protection Laboratory (UR 3072), Strasbourg, France.
- Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081, Strasbourg Cedex, France.
| |
Collapse
|
4
|
Massamba A, Hucteau E, Mallard J, Ducrocq GP, Favret F, Hureau TJ. Exercise-Induced Fatigue in Hamstring versus Quadriceps Muscles and Consequences on the Torque-Duration Relationship in Men. Med Sci Sports Exerc 2022; 54:2099-2108. [PMID: 35868018 DOI: 10.1249/mss.0000000000003007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE The present study investigated the mechanisms of neuromuscular fatigue in quadriceps and hamstring muscles and its consequences on the torque-duration relationship. METHODS Twelve healthy men performed a 5-min all-out exercise (3-s contraction, 2-s relaxation) with either quadriceps or hamstring muscles on separate days. Central fatigue and peripheral fatigue were quantified via changes in pre- to postexercise voluntary activation (VA) and potentiated twitch (P Tw ) torque evoked by supramaximal electrical stimulation, respectively. Critical torque was determined as the mean torque of the last six contractions, whereas W ' was calculated as the torque impulse done above critical torque. RESULTS After exercise, maximal voluntary contraction (MVC) decreased to a greater magnitude ( P < 0.001) in quadriceps (-67% ± 9%) compared with hamstring (-51% ± 10%). ∆P Tw was also greater in quadriceps compared with hamstring (-69% ± 15% vs 55% ± 10%, P < 0.01), whereas central fatigue only developed in quadriceps (∆VA, -25% ± 28%). Hamstring demonstrated reduced critical torque compared with quadriceps (60 ± 12 vs 97 ± 26 N·m, P < 0.001) as well as drastically lower W ' (1001 ± 696 vs 8111 ± 2073 N·m·s, P < 0.001). No correlation was found between quadriceps and hamstring for any index of neuromuscular fatigue (∆MVC, ∆P Tw , or ∆VA). CONCLUSIONS These findings revealed that hamstring presented different etiology and magnitude of neuromuscular fatigue compared with quadriceps. The absence of correlation observed between quadriceps and hamstring fatigue parameters (∆MVC, ∆P Tw , or ∆VA) suggests no interrelation in fatigue etiology between these two muscle groups within individuals and, therefore, highlights the need to investigate specifically hamstring muscle fatigue.
Collapse
|
5
|
Ducrocq GP, Blain GM. Relationship between neuromuscular fatigue, muscle activation and the work done above the critical power during severe intensity exercise. Exp Physiol 2022; 107:312-325. [PMID: 35137992 DOI: 10.1113/ep090043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 02/02/2022] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the central question of this study? Does the work done above critical power (W') or muscle activation determine the degree of peripheral fatigue induced by cycling time-trials performed in the severe intensity domain? What is the main finding and its importance? We found that peripheral fatigue increased when power output and muscle activation increased whereas W' did not change between the time-trials. Therefore, no relationship was found between W' and exercise-induced peripheral fatigue such as previously postulated in the literature. In contrast, we found a significant association between EMG amplitude during exercise and exercise-induced reduction in the potentiated quadriceps twitch, suggesting that muscle activation plays a key role in determining peripheral fatigue during severe intensity exercise. ABSTRACT In order to determine the relationship between peripheral fatigue, muscle activation and the total work done above critical power (W'), ten men and four women performed, on separated days, self-paced cycling time-trials of 3, 6, 10, and 15 min. Exercise-induced quadriceps fatigue was quantified using pre- to post-exercise (15 s through 15 min recovery) changes in maximal voluntary contraction peak force (MVC), voluntary activation (VA) and potentiated twitch force (QT). VA was measured using the interpolated twitch technique, and QT was evoked by electrical stimulations of the femoral nerve. Quadriceps muscle activation was determined using the root mean square of surface electromyography of vastus lateralis (VLRMS ), vastus medialis (VMRMS ) and rectus femoris (RFRMS ). Critical power and W' were calculated from the power/duration relationship from the four time-trials. Mean power output and mean VLRMS , VMRMS and RFRMS were greater during shorter compared to longer exercises (P<0.05) whereas no significant between-trials change in W' was found. The magnitude of exercise-induced reductions in QT increased with the increase in power output (P<0.001) and were associated with mean VLRMS and VMRMS (P<0.001, r2 >0.369) but not W' (P>0.150, r2 <0.044). Reduction in VA tended (P = 0.067) to be more pronounced with the lengthening in time-trial duration while no significant between-trials change in MVC were found. Our data suggest that peripheral fatigue is not related to the amount of work done above the critical power but rather to the level of muscle activation during exercise the severe intensity domain. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Guillaume P Ducrocq
- LAMHESS, Université Côte d'Azur, Nice, France.,Faculty of Medicine, Mitochondria, Oxidative Stress and Muscular Protection laboratory (UR 3072), University of Strasbourg, Strasbourg, France.,Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, Strasbourg, France
| | | |
Collapse
|
6
|
Varesco G, Luneau E, Féasson L, Lapole T, Rozand V. Very old adults show impaired fatigue resistance compared to old adults independently of sex during a knee-extensors isometric test. Exp Gerontol 2022; 161:111732. [DOI: 10.1016/j.exger.2022.111732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/31/2022] [Accepted: 02/02/2022] [Indexed: 11/26/2022]
|
7
|
Hureau TJ, Hucteau E, Massamba A, Mallard J, Ducrocq GP. Identifying sex differences in neuromuscular fatigue: the challenge of normalizing exercise intensity and interpreting the results between populations. J Physiol 2021; 599:2801-2802. [PMID: 33899237 DOI: 10.1113/jp281755] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Thomas J Hureau
- Faculty of Medicine, Mitochondria, Oxidative Stress and Muscular Protection laboratory (UR 3072), University of Strasbourg, Strasbourg, France.,Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, Strasbourg, France
| | - Elyse Hucteau
- Faculty of Medicine, Mitochondria, Oxidative Stress and Muscular Protection laboratory (UR 3072), University of Strasbourg, Strasbourg, France.,Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, Strasbourg, France
| | - Anasthase Massamba
- Faculty of Medicine, Mitochondria, Oxidative Stress and Muscular Protection laboratory (UR 3072), University of Strasbourg, Strasbourg, France.,Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, Strasbourg, France
| | - Joris Mallard
- Faculty of Medicine, Mitochondria, Oxidative Stress and Muscular Protection laboratory (UR 3072), University of Strasbourg, Strasbourg, France.,Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, Strasbourg, France
| | - Guillaume P Ducrocq
- Faculty of Medicine, Mitochondria, Oxidative Stress and Muscular Protection laboratory (UR 3072), University of Strasbourg, Strasbourg, France.,Faculty of Sport Sciences, European Centre for Education, Research and Innovation in Exercise Physiology (CEERIPE), University of Strasbourg, Strasbourg, France
| |
Collapse
|