Abstract
The purpose of this study was to elucidate the postural sway control mechanism which cannot be evaluated by a traditional gravicorder alone. The sway of center-of-gravity by a gravicorder and the sway of body by a triaxial accelerometer in static standing, were measured simultaneously, and relationships among the measured items were considered. In the results, there was a significant correlation between the total length of sway path measured by a gravicorder and accelerations measured by a triaxial accelerometer. This result certified the appropriateness of evaluation of postural sway measured by a triaxial accelerometer. Until now, we have studied the characteristics of the sway of center-of-gravity that was drawn in a 2-dimensional plane. The results suggest that the characteristics of way center-of-gravity can be elucidated in 3-dimensional space using these apparatus. Therefore, the possibility that the physical characteristics of the sway of body connected with center-of-gravity control can be elucidated and the possibility that the center-of-gravity control mechanism, which has been studied by a gravicorder alone, can be elucidated were shown.
