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The impact of submaximal fatiguing exercises on the ability to generate and sustain the maximal voluntary contraction
Neuromuscular fatigability is a failure to produce or maintain a required torque, and commonly quantified with the decrease of maximal torque production during a few seconds-long maximal voluntary contraction (MVC). The literature shows that the MVC reduction after exercises with different torque-ti...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9478515/ https://www.ncbi.nlm.nih.gov/pubmed/36117706 http://dx.doi.org/10.3389/fphys.2022.970917 |
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author | Lebesque, Loïc Scaglioni, Gil Martin, Alain |
author_facet | Lebesque, Loïc Scaglioni, Gil Martin, Alain |
author_sort | Lebesque, Loïc |
collection | PubMed |
description | Neuromuscular fatigability is a failure to produce or maintain a required torque, and commonly quantified with the decrease of maximal torque production during a few seconds-long maximal voluntary contraction (MVC). The literature shows that the MVC reduction after exercises with different torque-time integral (TTI), is often similar. However, it was shown that after a fatiguing exercise, the decline in the capacity to sustain the maximal voluntary contraction for 1 min (MVC(1-MIN)) differs from the decrease in the capacity to perform a brief-MVC, suggesting that this latter can only partially assess neuromuscular fatigability. This study aims to highlight the relevance of using a sustained MVC to further explore the neuromuscular alterations induced by fatiguing exercises with different TTI. We used two contraction intensities (i.e., 20% and 40% MVC) to modulate the TTI, and two exercise modalities [i.e., voluntary (VOL) and electrical induced (NMES)], since the letter are known to be more fatiguing for a given TTI. Thirteen subjects performed a plantar-flexors MVC(1-MIN) before and after the fatiguing exercises. A similar MVC loss was obtained for the two exercise intensities despite a greater TTI at 40% MVC, regardless of the contraction modality. On the other hand, the torque loss during MVC(1-MIN) was significantly greater after the 40% compared to 20% MVC exercise. These findings are crucial because they demonstrate that maximal torque production and sustainability are two complementary features of neuromuscular fatigability. Hence, MVC(1-MIN) assessing simultaneously both capacities is essential to provide a more detailed description of neuromuscular fatigability. |
format | Online Article Text |
id | pubmed-9478515 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-94785152022-09-17 The impact of submaximal fatiguing exercises on the ability to generate and sustain the maximal voluntary contraction Lebesque, Loïc Scaglioni, Gil Martin, Alain Front Physiol Physiology Neuromuscular fatigability is a failure to produce or maintain a required torque, and commonly quantified with the decrease of maximal torque production during a few seconds-long maximal voluntary contraction (MVC). The literature shows that the MVC reduction after exercises with different torque-time integral (TTI), is often similar. However, it was shown that after a fatiguing exercise, the decline in the capacity to sustain the maximal voluntary contraction for 1 min (MVC(1-MIN)) differs from the decrease in the capacity to perform a brief-MVC, suggesting that this latter can only partially assess neuromuscular fatigability. This study aims to highlight the relevance of using a sustained MVC to further explore the neuromuscular alterations induced by fatiguing exercises with different TTI. We used two contraction intensities (i.e., 20% and 40% MVC) to modulate the TTI, and two exercise modalities [i.e., voluntary (VOL) and electrical induced (NMES)], since the letter are known to be more fatiguing for a given TTI. Thirteen subjects performed a plantar-flexors MVC(1-MIN) before and after the fatiguing exercises. A similar MVC loss was obtained for the two exercise intensities despite a greater TTI at 40% MVC, regardless of the contraction modality. On the other hand, the torque loss during MVC(1-MIN) was significantly greater after the 40% compared to 20% MVC exercise. These findings are crucial because they demonstrate that maximal torque production and sustainability are two complementary features of neuromuscular fatigability. Hence, MVC(1-MIN) assessing simultaneously both capacities is essential to provide a more detailed description of neuromuscular fatigability. Frontiers Media S.A. 2022-09-02 /pmc/articles/PMC9478515/ /pubmed/36117706 http://dx.doi.org/10.3389/fphys.2022.970917 Text en Copyright © 2022 Lebesque, Scaglioni and Martin. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Physiology Lebesque, Loïc Scaglioni, Gil Martin, Alain The impact of submaximal fatiguing exercises on the ability to generate and sustain the maximal voluntary contraction |
title | The impact of submaximal fatiguing exercises on the ability to generate and sustain the maximal voluntary contraction |
title_full | The impact of submaximal fatiguing exercises on the ability to generate and sustain the maximal voluntary contraction |
title_fullStr | The impact of submaximal fatiguing exercises on the ability to generate and sustain the maximal voluntary contraction |
title_full_unstemmed | The impact of submaximal fatiguing exercises on the ability to generate and sustain the maximal voluntary contraction |
title_short | The impact of submaximal fatiguing exercises on the ability to generate and sustain the maximal voluntary contraction |
title_sort | impact of submaximal fatiguing exercises on the ability to generate and sustain the maximal voluntary contraction |
topic | Physiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9478515/ https://www.ncbi.nlm.nih.gov/pubmed/36117706 http://dx.doi.org/10.3389/fphys.2022.970917 |
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