To attain easy usage and to prevent and improve waist ache and shoulder stiffness, etc., by fitting a cushion stand for placing a thigh part and a breast part to a support plate through a slide device so as to be correlatively movable.

A caster fitting stand 1 is fixed to the center of the support plate A, two left and right pairs of casters 2 are fitted to its both sides and two left and right pairs of casters 4 are fitted on the lower surface of the cushion stand B. Moreover, rails 3 and 3' with an L-shaped cross-section are oppositely fixed at the inner sides of the casters 4, the casters 2 are engaged on the rail surfaces so as to permit the support plate A to be integrated with the cushion stand B and metallic fixtures 8 are fitted on the side surfaces of a metallic fixture stand 7 fixed to the side surfaces of the rails 3 and the support plate A and a handle 6 is attached to the front surface of the cushion stand B. The metallic fixtures 8 are arranged to prevent the cushion stand B from being moved, an adjusting tool is inserted to the thigh part and the breast part and, after that, the metallic fixtures 8 are removed. Thus, the handle 6 is held by one hand so as to be pushed or pulled in the left and right direction of a human body.