Individual differences in the neural strategies to control the lateral and medial head of the quadriceps during a mechanically constrained task

Simon Avrillon (1) , Alessandro del Vecchio , Dario Farina , José Pons , Clément Vogel , Jun Umehara , François Hug (1)

1 MIP - Motricité, interactions, performance EA 4334 / Movement - Interactions - Performance

We observed that the distribution of the strength of neural drive between the vastus lateralis and vastus medialis during a single-joint isometric task varied across participants. Also, we observed that the proportion of neural drive that was shared within and between these muscles also varied across participants. These results provide evidence that the neural strategies to control the vastus lateralis and vastus medialis muscles widely vary across individuals, even during a mechanically constrained task.

Mots clés: Coherence; Common drive; Electromyography; Motor units; Quadriceps

Domaines: Sciences du Vivant [q-bio]; Physiologie [q-bio.TO]

Simon Avrillon, Alessandro del Vecchio, Dario Farina, José Pons, Clément Vogel, et al.. Individual differences in the neural strategies to control the lateral and medial head of the quadriceps during a mechanically constrained task. Journal of Applied Physiology, 2021, 130 (1), pp.269-281. ⟨10.1152/japplphysiol.00653.2020⟩. ⟨hal-03298517⟩