Abstract
The muscle activity of the internal oblique muscle (IO) increases with an increase in load bearing on the standing side leg. However, we often observe a contraction of the IO in a forward step and a back step in cerebrovascular disease patients. If the muscle activity of the swing side IO increases in a forward step and a back step, the dynamic stability of pelvis in the swing phase in walking would improve in cerebrovascular disease patients. Accordingly, the purpose of this research was to elucidate of the muscle activity of the swing side IO in the first stage of a rear step. The subjects of the research were 10 healthy persons in this study. For the measurement method, we measured the surface electromyography of the trunk muscles and recorded the motion with cameras two video during one step forward and one step backward with the right leg by the subjects. In the first stage of the rear step, the group muscle activity of the swing side IO was not seen and the movement was carried out with a hip joint strategy. On the right side, the group muscle activity of the swing side IO was seen and the movement was carried out with an upright body. As mention above, we think that a step taking heed of the motor strategy is valuable for the rehabilitation of cerebrovascular disease patients.
