Abstract: An exercise system comprises an anchor and at least one extendible tether extending from a mooring on the anchor to a grip end. Each extendible tether is longitudinally movable between an extended configuration and a retracted configuration. At least one sensor alignment arm is movably coupled to the anchor, and a sensor is associated with each sensor alignment arm and extendible tether. The sensor alignment arm carries a first sensor element and the extendible tether carries a second sensor element. Each extendible tether is longitudinally movable relative to its sensor alignment arm and angular movement of the extendible tether relative to the anchor moves the sensor alignment arm to maintain longitudinal alignment between the first sensor element and the second sensor element. The sensor detects movement of the second sensor element past the first sensor element as the extendible tether moves between the extended configuration and the retracted configuration.

Abstract: An exercise system comprises an anchor and at least one extendible tether extending from a mooring on the anchor to a grip end. Each extendible tether is longitudinally movable between an extended configuration and a retracted configuration. At least one sensor alignment arm is movably coupled to the anchor, and a sensor is associated with each sensor alignment arm and extendible tether. The sensor alignment arm carries a first sensor element and the extendible tether carries a second sensor element. Each extendible tether is longitudinally movable relative to its sensor alignment arm and angular movement of the extendible tether relative to the anchor moves the sensor alignment arm to maintain longitudinal alignment between the first sensor element and the second sensor element. The sensor detects movement of the second sensor element past the first sensor element as the extendible tether moves between the extended configuration and the retracted configuration.

Abstract: An exercise system comprises an anchor and at least one extendible tether extending from a mooring on the anchor to a grip end. Each extendible tether is longitudinally movable between an extended configuration and a retracted configuration. At least one sensor alignment arm is movably coupled to the anchor, and a sensor is associated with each sensor alignment arm and extendible tether. The sensor alignment arm carries a first sensor element and the extendible tether carries a second sensor element. Each extendible tether is longitudinally movable relative to its sensor alignment arm and angular movement of the extendible tether relative to the anchor moves the sensor alignment arm to maintain longitudinal alignment between the first sensor element and the second sensor element. The sensor detects movement of the second sensor element past the first sensor element as the extendible tether moves between the extended configuration and the retracted configuration.