Abstract
In recent years, the care costs and insurance premium increasing in Japan. Because, we thought that increase of the number of care-need certificated persons. So, we would like to increase the self-supporting persons in daily-life. Therefore, we thought that we need to analyze about the standing-up/sitting-down motions. And, we thought that the individual difference of physical cause difference of burden for muscles and joints. In the present study, First, we quantitatively analyzed the standing-up/sitting-down motions by using the driving power and the angular momentum. Driving power is considered to be a value for evaluating actual kinematic performance around a joint motion as energy per unit of time. And, angular momentum exerted by each muscle expresses the intensity of motion of that muscle. Second, the individual difference of burden around a joint considered by using the driving power around the joint. Finally, individual difference of burden to muscles considered by using the angular momentum. In this result, we knew that the burden of knee joint and muscles generated by the person of heavy weight are bigger than those generated by the person of light weight. In addition, the burden of knee joint and muscles generated by the dominant foot are bigger than those generated by the non-dominant foot.
