Abstract: In-field kits and systems for self-directed therapeutic pulley-based muscle rehabilitation methods. The in-field kit and system comprises ring-shaped fasteners that can be removably coupled to preselected locations on a stationary structure, such as a chain link fence. Pulleys are coupled to the ring-shaped fasteners and an inelastic tether spans the pulleys. The tether has a proximal end portion to which a handle is coupled and a distal end portion to which a weight is coupled. The weight and pulleys provide resistance when a person uses the handle to perform any one of a multiplicity of exercise routines. Use of the invention obviates a need to have a physical therapist present at all times during rehabilitation of an injured user because the invention is a pulley-based system usable at home or at an athletic field.

Abstract: The present invention is a pulley apparatus for resistance exercises comprising: a housing with an upper end, a lower end, an interior channel extending through the housing, and an exterior surface; a weight stack movable within the housing; and a pulley system comprising in the interior: at least two upper pulleys attached to the upper end of the housing, and at least one lower pulley attached to the weight stack; and on the exterior surface: at least two swivel pulleys attached to the upper end of the housing, and first and second outer pulleys, the first outer pulley located below the swivel pulleys and the second outer pulley located below the first outer pulley; and a pulley rope received by the upper pulleys, the lower pulleys, the swivel pulleys and the outer pulleys such that a first end of the pulley rope is secured to one of the outer pulleys and a second end of the pulley rope is received lastly by the other outer pulley, whereby force exerted on the second end of the pulley rope moves the weight s