Session Description and Capability Negotiation

A versatile exercising device having a base and swinging body supporting member attached to the base is provided in practice of this invention. In one embodiment the base is in the form of a tubular frame having similar rectangular frame members pivotally interconnected along one edge so as to pivot between a closed position with the frame members parallel to each other, and an erected position wherein the frame members are spread to form a triangular base and an apex at the pivotally interconnected edges. Thus, a transverse bar extends across the base at the apex. An elongated body supporting member is connected adjacent the apex by links so as to hang with its mid-point approximately below the apex. Four links from approximately the apex to respective points on each side and remote from the middle of the body supporting member permit it to be swung in the direction of its length, transverse to the bar at the apex. The links are of a sufficient length that an occupant on the body supporting member can reach the apex bar or side edges of the frame members with a hand or a foot for propelling the body supporting member in a swinging manner. A horizontal bar transverse to the direction of swinging is connected to one of the frame members so as to be above and adjacent one end of the body supporting member so that an occupant can reach it with a hand or foot for exerting propulsive force. In one embodiment the body supporting member is rigid. In another embodiment the body supporting member is rigid transverse to its length and elastically flexible along its length for flexing the body of an occupant. In another embodiment a triangular base folds for storage around pivots interconnecting frame members at the lower end.