Journal of the Society of Biomechanisms
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Volume 14, Issue 2
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  • Evaluation of Blancing Ability of Aged People by Responses Postural Sway to Acceleration Disturbance.
    Sung-heou SHIN, Motoyuki AKAMATSU, Yoshio HAYASHI
    Article type: Article
    1990 Volume 14 Issue 2 Pages 107-115
    Published: May 01, 1990
    Released on J-STAGE: October 31, 2016
    DOIhttps://doi.org/10.3951/sobim.14.107
    JOURNAL FREE ACCESS
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    The aim of this study is to develop an analyzing technique for balancing ability of aged people. A measurement system was composed of a force plate and a solenoide and could measure postural sway to sudden acceleration disturbance. Experiments were performed with athletes, youths, and aged subjects. Four order AR model were applied to the measured postural sways. From characteristic equations of AR model, damping time, damping frequency, and power rate of components of the postural sway were obtained by the component decomposition method. Experimental results showed that aged subjects have a long damping time of the highest power component. Thus, damping time of the component was proposed as an index of the balancing ability. This index was examined by comparison with indices from walking experiments on a balance beam. It was concluded that balancing ability of aged people could be evaluated by the damping time.
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