Assessment of the underlying systems involved in standing balance: the additional value of electromyography in system identification and parameter estimation.

ABSTRACT:

Background

Closed loop system identification (CLSIT) is a method to disentangle the contribution of underlying systems in standing balance. We investigated whether taking into account lower leg muscle activation in CLSIT could improve the reliability and accuracy of estimated parameters identifying the underlying systems.

Methods

Standing balance behaviour of 20 healthy young participants was measured using continuous rotations of the support surface (SS). The dynamic balance behaviour obtained with CLSIT was expressed by sensitivity functions of the ankle torque, body sway and muscle activation of the lower legs to the SS rotation. Balance control models, 1) without activation dynamics, 2) with activation dynamics and 3) with activation dynamics and acceleration feedback, w

SUBMITTER: Pasma JH 

PROVIDER: S-EPMC5603100 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature