The center of pressure and ankle muscle co-contraction in response to anterior-posterior perturbations.

ABSTRACT: Though both contraction of agonist muscles and co-contraction of antagonistic muscle pairs across the ankle joint are essential to postural stability, they are perceived to operate independently of each other, In an antagonistic setup, agonist muscles contract generating moment about the joint, while antagonist muscles contract generating stiffness across the joint. While both work together in maintaining robustness in the face of external perturbations, contractions of agonist muscles and co-contractions of antagonistic muscle pairs across the ankle joint play different roles in responding to and adapting to external perturbations. To determine their respective roles, we exposed participants to repeated perturbations in both large and small magnitudes. The center of pressure (COP) and a c

SUBMITTER: Kim D 

PROVIDER: S-EPMC6264860 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature