Chair-type bicycle exercise device

Bicycle-type pedals are rotatably mounted on a frame in a manner whereby the pedals are rotatable by a user seated in a chair in proximity with the frame; the frame is elongated and is adjustably attached to the under surface of the seat by means of a track whereby the frame can be totally disposed under the seat when not in use and can be adjustably disposed in front of the chair when in use; the pedals are attached intermediate the ends of the frame and can be stored under the seat along with the frame; the frame is provided at one of its ends with a vertically adjustable leg for adjusting the pedals relative to a support surface.