Abstract
In this paper, the gait characteristics for the aged was investigated and analyzed to study the stumble factor during a low step ascending. The video camera system was developed to measure gaits and motion of joints and body segments. DLT technique was applied to determine the three dimensional motion. In particular, the orbital analysis of the toe and the kinetics and kinematics to across the slight difference in level were discussed. It was found from the result that the aged toe passed through the way that is close to floor, and the tow peaks characteristic in the orbital curve for aged disappeared.
