Abstract
The installation of appropriate lobby chairs in the hospital's waiting room is requested on the aged society. Then, the purpose of this research is to obtain the configuration and dimensions of an appropriate lobby chair for both the young and the aged. In this case, both the seating and the standing action to the chair were considered at the same time. The standing actions with an armrest and without one were investigated_ Experiments were conducted with an experiment chair made in the original. The subjects were the five persons of the young and the aged, respectively. Experimental conditions were 120 kinds of conditions by the combination of the seat angle, inclined angle of back, and height of seat. Appropriate conditions common to the young and the aged were found at seating. These were approximately conespondingto the proposal of Kohara and Hanaoka. The evaluation was not corresponding to the aged and the young at the standing action without armrest. The aged evaluated the chair for the standing action high when the height of the seat was low and the young evaluated it better where the height of the seat is high. At the seating on the chair and at the standing action with armrest the condition with a high evaluation common to the young and the aged was as follows: 315mm seat level (369mm height of seat) .6 deg seat angle and l8deg inclined angle of back (102 deg angle between the seat and the back)
