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The Neuromuscular Fatigue-Induced Loss of Muscle Force Control

Neuromuscular fatigue is characterised not only by a reduction in the capacity to generate maximal muscle force, but also in the ability to control submaximal muscle forces, i.e., to generate task-relevant and precise levels of force. This decreased ability to control force is quantified according t...

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Detalles Bibliográficos
Autores principales: Pethick, Jamie, Tallent, Jamie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9694672/
https://www.ncbi.nlm.nih.gov/pubmed/36422953
http://dx.doi.org/10.3390/sports10110184
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author Pethick, Jamie
Tallent, Jamie
author_facet Pethick, Jamie
Tallent, Jamie
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description Neuromuscular fatigue is characterised not only by a reduction in the capacity to generate maximal muscle force, but also in the ability to control submaximal muscle forces, i.e., to generate task-relevant and precise levels of force. This decreased ability to control force is quantified according to a greater magnitude and lower complexity (temporal structure) of force fluctuations, which are indicative of decreased force steadiness and adaptability, respectively. The “loss of force control” is affected by the type of muscle contraction used in the fatiguing exercise, potentially differing between typical laboratory tests of fatigue (e.g., isometric contractions) and the contractions typical of everyday and sporting movements (e.g., dynamic concentric and eccentric contractions), and can be attenuated through the use of ergogenic aids. The loss of force control appears to relate to a fatigue-induced increase in common synaptic input to muscle, though the extent to which various mechanisms (afferent feedback, neuromodulatory pathways, cortical/reticulospinal pathways) contribute to this remains to be determined. Importantly, this fatigue-induced loss of force control could have important implications for task performance, as force control is correlated with performance in a range of tasks that are associated with activities of daily living, occupational duties, and sporting performance.
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spelling pubmed-96946722022-11-26 The Neuromuscular Fatigue-Induced Loss of Muscle Force Control Pethick, Jamie Tallent, Jamie Sports (Basel) Review Neuromuscular fatigue is characterised not only by a reduction in the capacity to generate maximal muscle force, but also in the ability to control submaximal muscle forces, i.e., to generate task-relevant and precise levels of force. This decreased ability to control force is quantified according to a greater magnitude and lower complexity (temporal structure) of force fluctuations, which are indicative of decreased force steadiness and adaptability, respectively. The “loss of force control” is affected by the type of muscle contraction used in the fatiguing exercise, potentially differing between typical laboratory tests of fatigue (e.g., isometric contractions) and the contractions typical of everyday and sporting movements (e.g., dynamic concentric and eccentric contractions), and can be attenuated through the use of ergogenic aids. The loss of force control appears to relate to a fatigue-induced increase in common synaptic input to muscle, though the extent to which various mechanisms (afferent feedback, neuromodulatory pathways, cortical/reticulospinal pathways) contribute to this remains to be determined. Importantly, this fatigue-induced loss of force control could have important implications for task performance, as force control is correlated with performance in a range of tasks that are associated with activities of daily living, occupational duties, and sporting performance. MDPI 2022-11-21 /pmc/articles/PMC9694672/ /pubmed/36422953 http://dx.doi.org/10.3390/sports10110184 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Pethick, Jamie
Tallent, Jamie
The Neuromuscular Fatigue-Induced Loss of Muscle Force Control
title The Neuromuscular Fatigue-Induced Loss of Muscle Force Control
title_full The Neuromuscular Fatigue-Induced Loss of Muscle Force Control
title_fullStr The Neuromuscular Fatigue-Induced Loss of Muscle Force Control
title_full_unstemmed The Neuromuscular Fatigue-Induced Loss of Muscle Force Control
title_short The Neuromuscular Fatigue-Induced Loss of Muscle Force Control
title_sort neuromuscular fatigue-induced loss of muscle force control
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9694672/
https://www.ncbi.nlm.nih.gov/pubmed/36422953
http://dx.doi.org/10.3390/sports10110184
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