Abstract: Right and left arms are rotatably connected to stanchions form adjustable handlebars. The arms are shaped such that rotating them changes the height and their width apart, enabling the gait training or exercise device to accommodate users of different height and girth. Each arm is shaped like an abbreviated “S”. A fastener holds each arm in a desired angle of rotation, holding the handlebars at a given height and distance apart. The position can be changed be releasing the fastener, moving the arm to a new desired position, and re-securing the fastener. In a preferred embodiment, the fastener comprises a spring-biased knob, external splines at the end of the arm, and internal splines inside a receiving tube on the frame of the exercise device, which cooperate to fix a handle bar in a desired position.