[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5207/JIEIE.2013.27.8.042

Open Loop Responses of Posture Complexity in Biomechanics

Shin, Youngkyun (Department of Electrical Engineering, Yuhan University)
Park, Gu-Bum (Department of Electrical Engineering, Yuhan University)

Publication Information

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.27, no.8, 2013 , pp. 42-50 More about this Journal

Abstract

The reactionary responses to control human standing dynamics were estimated under the assumption that postural complexity mainly occurs in the mid-sagittal plane. During the experiment, the subject was exposed to continuous horizontal perturbation. The ankle and hip joint rotations of the subject mainly contributed to maintaining standing postural control. The designed mobile platform generated anterior/posterior (AP) motion. Non-predictive random translation was used as input for the system. The mean acceleration generated by the platform was measured as $0.44m/s^2$ . The measured data were analyzed in the frequency domain by the coherence function and the frequency response function to estimate its dynamic responses. The significant correlation found between the input and output of the postural control system. The frequency response function revealed prominent resonant peaks within its frequency spectrum and magnitude. Subjects behaved as a non-rigid two link inverted pendulum. The analyzed data are consistent with the outcome hypothesized for this study.

Keywords

Coherence Function; Frequency Response Function; Non-predictive Horizontal Vibration; Resonance Frequency; Standing Postural Control;

Citations & Related Records

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