Specificity of early motor unit adaptations with resistive exercise training
Author(s)
Del Vecchio, Alessandro
Enoka, Roger Maro
Farina, Dario
Type
Journal Article
Abstract
After exposure of the human body to resistive exercise, the force-generation capacity of the trained muscles increases significantly. Despite decades of research, the neural and muscular stimuli that initiate these changes in muscle force are not yet fully understood. The study of these adaptations is further complicated by the fact that the changes may be partly specific to the training task. For example, short-term strength training does not always influence the neural drive to muscles during the early phase (<100 ms) of force development in rapid isometric contractions. Here we discuss some of the studies that have investigated neuromuscular adaptations underlying changes in maximal force and rate of force development produced by different strength training interventions, with a focus on changes observed at the level of spinal motor neurons. We discuss the different motor unit adjustments needed to increase force or speed, and the specificity of some of the adaptations elicited by differences in the training tasks.
Date Issued
2024-06-15
Date Acceptance
2024-04-10
Citation
Journal of Physiology, 2024, 602 (12), pp.2679-2688
ISSN
0022-3751
Publisher
Wiley
Start Page
2679
End Page
2688
Journal / Book Title
Journal of Physiology
Volume
602
Issue
12
Copyright Statement
© 2024 The Authors. The Journal of Physiology published by John Wiley & Sons Ltd on behalf of The Physiological Society. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/38686581
Subjects
ACTIVATION
BEHAVIOR
CONTRACTIONS
EMG
FORCE DEVELOPMENT
H-REFLEX
Life Sciences & Biomedicine
MOTONEURONS
motor neuron
motor unit
NEURAL ADAPTATION
NEUROPLASTICITY
Neurosciences
Neurosciences & Neurology
Physiology
plasticity
Science & Technology
SPIKE FREQUENCY ADAPTATION
STRENGTH
training
Publication Status
Published
Coverage Spatial
England
Date Publish Online
2024-04-30