Abstract: A ski-type exercise or therapy apparatus for use with liquid contained within a pool having walls utilizes a frame positionable in a stationary condition with respect to the walls of the pool and a pair of pump assemblies wherein each pump assembly includes a piston and a cylinder within which the piston is slidably received for movement therealong in conjunction with the movement of a corresponding foot of an individual between two positions of movement. A port provides flow communication between the interiors of the cylinders so that as the piston is moved along the cylinder in conjunction with the motions of the individual's foot during an exercise or therapy routine, liquid flows between the interiors of the cylinders by way of the port. By controlling the flow of liquid between the interiors of the cylinders by way of the ports, the motions of the individual's feet during the exercise or therapy routine can be controlled.

Abstract: A ski-type exercise or therapy apparatus for use with liquid contained within a pool having walls utilizes a frame positionable in a stationary condition with respect to the walls of the pool and a pair of pump assemblies wherein each pump assembly includes a piston and a cylinder within which the piston is slidably received for movement therealong in conjunction with the movement of a corresponding foot of an individual between two positions of movement. A port provides flow communication between the interiors of the cylinders so that as the piston is moved along the cylinder in conjunction with the motions of the individual's foot during an exercise or therapy routine, liquid flows between the interiors of the cylinders by way of the port. By controlling the flow of liquid between the interiors of the cylinders by way of the ports, the emotions of the individual's feet during the exercise or therapy routine can be controlled.

Abstract: An exercise or therapy apparatus for use in a pool of water utilizes a stationary frame and an impeller section including a user-operable impeller wheel rotatably attached to the frame for rotation about an axis of rotation. Pedals are connected to the impeller wheel enabling the turbine wheel to rotate about its axis of rotation in conjunction with the movement of the user's feet as a cycle-type exercise or therapy device. The impeller section includes an inlet positionable within the water of the pool, and the impeller wheel is adapted to draw a stream of water into the inlet of the impeller wheel as the impeller wheel is rotated about its axis of rotation. A valve is associated with the impeller section for controlling the quantity of the stream of water which is permitted to flow into the impeller section by way of the inlet when the impeller wheel is rotated to thereby alter the resistance to the rotation of the impeller wheel.