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Etude de la modulation des interactions corticomusculaires et intermusculaires induite par l'entraînement de force maximale chez le sujet sain

Abstract : The first few weeks of training lead to a rapid increase of the force production and / or motor control precision. These behavioral adaptations are believed to result from neurophysiological adaptations since muscle structure remains unchanged. These neurophysiological adaptations could be translated by the study of measures of corticomuscular (CMC) and intermuscular (IMC) coherence, which designate a level of correlation between the muscular and the motor cortex oscillatory activity. The objective of this work is to evaluate the reproducibility and modulation of the coherence measurements beforehand during a 3-week maximal strength training (MST) or a 4-day motor training. At the behavioral level, the force production was increased by the MST. During submaximal contractions, motor control performance was improved by the MST and the motor training. After the MST, muscle activations and IMC were decreased during submaximal contractions while cortical activations remained unchanged. After motor training, the CMC was increased. These results suggest that neurophysiological adaptations differ depending on the type of training. Motor training brings about a more specific involvement of cortical structures in the control of muscle contraction. On the contrary, MST induces a more global reorganization of motor commands controlling all muscle activations. The coherence measures are however characterized by an unsatisfactory inter-session reproducibility. In conclusion, these methods should be reserved for cohort studies in order for these markers to be relevant to characterize neurophysiological adaptations in sports and / or clinical fields.
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Submitted on : Tuesday, October 19, 2021 - 2:46:10 PM
Last modification on : Tuesday, November 23, 2021 - 9:45:06 AM

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  • HAL Id : tel-03385390, version 1

Citation

Dimitri Elie. Etude de la modulation des interactions corticomusculaires et intermusculaires induite par l'entraînement de force maximale chez le sujet sain. Biomécanique [physics.med-ph]. Université Polytechnique Hauts-de-France; Institut National des Sciences Appliquées Hauts-de-France, 2021. Français. ⟨NNT : 2021UPHF0003⟩. ⟨tel-03385390⟩

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