We studied movement of standing up from the toilet stool for the proper establishment of the grab-bar was done a few physical burdens and it may be done safely. The following results that leg power and body balance of maintenance ability had relation with the easiness to use a grab-bar by the questionnaire. It was found that in the experiment of the movement with a grab-bar that as for 200mm・250mm from the tip of the toilet stool, it stood up, and a position of vertical grab-bar establishment contributed to the reduction of knee joint moment, however 150mm though it stood up and didn't help to the movement. These results got a common with the young age person and the aged.
