Abstract: An exercise device of the type employing an elastic cable to provide a restoring force comprises a handle attached to a plurality of elastic cables. The plurality of elastic cables are selectively attachable to a retainer assembly to provide a wide range of variation in restoring force exerted against the handle. The plurality of cables may also be enclosed in a flexible sheath to prevent the unattached, inactive cables from becoming entangled with each other or with the attached, active cables.

Abstract: A striding exerciser comprises a pair of pedals or platforms, each suspended from a frame by a linkage such that the pedals move back and forth through an arc to simulate a natural walking or striding motion. Preferably the linkage is a triangulated four bar linkage, which permits the pedals to move freely back and forth while providing substantial lateral rigidity to resist side-to-side motion. In one embodiment of the invention, a pair of handles are pivotally attached to the frame behind and to the side of a user standing on the platforms. Each of the handles is connected to the corresponding four bar linkage, such that motion of a platform is translated into motion of the corresponding handle. In another embodiment the triangulated four bar linkages share a common pivot shaft and are acted on by a common resistance mechanism such that equal resistance is applied to both platforms.

Abstract: An exercise device adapted for use by a person, comprising:a first ring having a predetermined diameter, an inner surface, and an outer surface;a second ring concentric to the first ring and rotatably retained by the first ring;and components for providing isokinetic resistance to rotation of the second ring andfor sensing predetermined characteristics of said second ring during rotation and providing sensor signals corresponding to said sensed characteristics;whereby a person applying a torque in a first direction of rotation causes rotation of the second ring in the first direction of rotation against the isokinetic resistance and the sensing components in response to said rotation sense said predetermined characteristics which are subsequently converted into sensor signals.

Abstract: A reciprocating variable isotonic resistance upper extremity and upper torso exercising belt for use while performing predominantly lower extremity and lower torso aerobic exercises.

Abstract: A golf swing training and muscle exercising device for a full-range of motion golf swing including a rotatable ring rotatable within a stationary ring; a golf club holder sub-assembly for providing hydraulic isokinetic resistance to rotation of the rotatable ring; and an electronic monitoring sub-assembly.