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Responses To Multi-Directional Surface Translations Involve Redistribution Of Proximal Versus Distal Strategies To Maintain Upright Posture, Stephanie L. Jones, Sharon M. Henry, Christine C. Raasch, Juvena R. Hitt, Janice Y. Bunn
Responses To Multi-Directional Surface Translations Involve Redistribution Of Proximal Versus Distal Strategies To Maintain Upright Posture, Stephanie L. Jones, Sharon M. Henry, Christine C. Raasch, Juvena R. Hitt, Janice Y. Bunn
Stephanie Jones
Evaluation of postural control in multiple planes is necessary to determine the movement strategies used to respond to unexpected perturbations. The present study quantified net joint torques of the lower limbs and trunk in the sagittal and frontal planes following multi-directional surface translations. Twenty-one healthy subjects stood with feet on separate force plates mounted on a moveable platform, translated unexpectedly in one of 12 directions. Peak net torque magnitudes and latencies following perturbation onset were determined as were the relative contributions of each joint to total torque production. Magnitude of net torque generated by each leg varied by perturbation direction, …