Priyanka Ramasamy
ABSTRACT
Despite many articles and reports on balance ability evaluation with postural control, only a few studies have reported the relationship between sudden perturbations and variations in the centre of pressure (COP). This paper introduces automated control of a balance exercise suit equipped with pneumatic gel muscles (PGMs) to cause sudden perturbations. The effectiveness of this PGM suit has been quantitatively analysed for the first time in this paper. COP data were recorded while perturbation-based interventions were provided using the PGM suit during different standing conditions: single-leg standing, tandem, and closed and visual conditions: eyes open and closed. Eight indices were calculated from the COP data to visualize various patterns of balancing ability. The highest effect size values (comparing activated and deactivated PGM conditions) were observed for the variance of the trajectory (0.79) and sway area (0.70) indices during open-eyed single-leg standing posture.
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