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Contrôle nerveux de la contraction volontaire excentrique chez l'homme : approche neurophysiologique et plasticité à l'entraînement

Abstract : The purpose of this PhD research is, on the one hand, to study the neural drive specificities during eccentric contractions by exploring the neural mechanisms involved at spinal level and, on the other hand, to examine the neural mechanisms responsible for the modulations of neuromuscular system following a strength submaximal eccentric training. Through this PhD research we highlight the contribution of recurrent inhibition by the Renshaw cell to the decrease of muscular activation typically observed during eccentric contraction. Furthermore, we show that recurrent inhibition is enhanced during submaximal contractions regardless of the contraction type. These results emphasize the important role of recurrent inhibition in the specificity of neural control during eccentric contractions. We confirm that the neural drive of the eccentric contraction may be modulated by eccentric strength training although modulations of spinal excitability seem to depend on the characteristics of training.
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Submitted on : Monday, November 19, 2018 - 5:22:06 PM
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Simon Barrue-Belou. Contrôle nerveux de la contraction volontaire excentrique chez l'homme : approche neurophysiologique et plasticité à l'entraînement. Biophysique. Université Paul Sabatier - Toulouse III, 2017. Français. ⟨NNT : 2017TOU30201⟩. ⟨tel-01927296⟩

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