Abstract: An exercise apparatus (10) includes a frame (12) on which left and right levers (14) and (16) are pivotally mounted. A resistance mechanism (18) resists pivoting of the levers between nominal and displaced positions. The levers are coupled by a linkage (20), including an elongate coil spring (22) and an internal extension-limiting cable (24). The linkage normally acts to urge each of the first and second levers toward its respective nominal position when the other of the first and second levers is in a displaced position. The coil spring is capable of elongating to permit limited non-synchronous motion of the left and right levers, with the elongation of the coil spring being limited by the presence of the extension-limiting cable.

Abstract: An exercise apparatus (10) includes left and right levers (14, 16) mounted on a frame (12) to pivot about a first pivot axis (17). The left and right levers are connected to the first ends of corresponding left and right shock absorbers (18, 20). The second ends of the left and right shock absorbers are pivotally mounted on the frame by a mounting mechanism (22), including a threaded rod (78), for adjustable positioning of the second ends of the shock absorbers relative to the first pivot axis of the levers. The present invention provides for simultaneous adjustment of the resistance offered by the two shock absorbers against rotation of corresponding independent levers.