Muscle co-activation in the elderly contributes to control of hip and knee joint torque and endpoint force.

ABSTRACT: We investigated the coordinated activity patterns of muscles based on cosine tuning in the elderly during an isometric force exertion task. We also clarified whether these coordinated activity patterns contribute to the control of hip and knee joint torque and endpoint force as co-activation. Preferred direction (PD) of activity for each muscle in 10 young and 8 older males was calculated from the lower limb muscle activity during isometric force exertion task in various directions. The covariance of endpoint force (η) was calculated from the exerted force data using a force sensor. Relationship between PD and η was used to examine the effect of muscle co-activation on the control of endpoint force. Co-activation between rectus femoris and semitendinosus/biceps femoris increased with chang

SUBMITTER: Kubota K 

PROVIDER: S-EPMC10154344 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature