Valve module and apparatus therefor

Variable add-on weight device

Variable compression resistance exercise device

Variable exercise apparatus

Variable exerciser

Variable incline exercise apparatus

Variable reactive force exercise device

Variable resistance aerobic exercise machine

Variable resistance device for use in training swimmers

Variable resistance exercise apparatus

Variable resistance exercise apparatus

Variable resistance exercise apparatus

Variable resistance exercise apparatus

Variable resistance exercise apparatus and improved method of ex

Variable resistance exercising apparatus and method

Variable resistance exercising device

Variable resistance exercising device

Variable resistance exercising device

Variable resistance lifting mechanism

Variable resistance lifting mechanism