Abstract: An aquatic exercise cycle including a frame receptive to be at least partially submersed in a liquid medium; a seat adjustably secured to the frame; a pair of handles operably coupled to at least one of the frame and the seat for an operator to hold onto; a crank assembly operably coupled to said frame having an input shaft rotatable with a pair of user operated pedals; and a variable resistance mechanism in operable communication with the input shaft and receptive to varying a resistance of rotation of the input shaft. The aquatic exercise cycle allows the user to adjust at least the seat relative to the crank assembly to select either an upright riding position or a recumbent riding position.

Abstract: An aquatic treadmill comprises a frame, rollers, and a belt. The rollers are rotatably connected to the frame. The belt is movably connected to the rollers. The belt is movable in at least one direction relative to the frame. The belt forms at least two walkway areas arranged so that the treadmill is reversibly orientable relative to a seating surface on which the treadmill is seated. One of the at least two walkway areas is accessible when the treadmill is in a first orientation, and another of the at least walkway areas is accessible when the treadmill has a reverse orientation from the first orientation.

Abstract: A treadmill for use within a pool of water for therapeutic exercise includes an endless track mounted between a pair of side members, a hand rail spaced above and extending parallel to one of the side members, and a vertical post secured to the one side member and providing support for the handrail. A seating member is mounted on the vertical post and is movable with respect to the post for selectively disposing the seating member at various heights above the one side member and either directly overlying the endless track or disposed to one side thereof.

Abstract: An exercise apparatus, particularly useful for in-water use, comprises a frame having, at its front end, a pair of side by side inclined tracks. A pair of steps are mounted for movement along respective ones of the tracks. A seating member includes a horizontal seat secured to the frame by a mechanism allowing selective positioning of the seat in front of the steps, whereby a user can operate the steps while seated, or to one side of the steps, whereby the steps are accessible by a user for performing a conventional stair climbing exercise.

Abstract: A stair climbing exercise apparatus for use within a pool of water comprises two steps mounted for reciprocal movement along vertically disposed guides, pulleys disposed at an upper end of the guides, and a cable interconnecting the two steps and extending around the pulleys. Mounted on each of the steps, for movement therewith, is a flap having a relatively large surface disposed perpendicularly to the direction of movements of the steps. In use, when one of the steps is moved downwardly by the foot of a user of the apparatus, the other step is moved upwardly by the interconnecting cable. The water resists movement of the flaps, hence provides resistance to downward movement of the steps.

Abstract: In exercise apparatus for underwater use including an apparatus frame, and movable members mounted on the frame to be moved by a user of the apparatus, flap members, e.g., flat plates, are mounted on the movable members for movement therewith within the surrounding water. The water resists movement of the flap means, hence provides resistance to movement of the members moved by the user. Disclosed are apparatus which, in use, simulate the movements of a cross-country skier, an ice-skating speed racer, and a rower of a row boat. Arrangements are also disclosed for selectively varying the resistance to movement provided by the flap members in response to the direction of movement of the movable members.

Abstract: Underwater exercise apparatus includes at least one paddle, which is coupled to an axle causing the paddle to rotate in response to rotation of the axle. When under water, the paddle produces resistance to the rotation of the axle. In a preferred embodiment, the paddle may be made part of a treadmill for underwater use for varying the resistance to movement of the treadmill belt. In a treadmill embodying the invention, the axle of one of the rollers supporting the belt, which roller is tightly coupled to the belt, extends beyond the side edge of the belt. Directly connected to the extending end of the axle, for rotation therewith, is a paddle. In use, movement of the belt causes rotation of the paddle through the water. The water resists the movement of the paddle which, in turn, resists movement of the belt. The amount of resistance to belt movement is a function of the speed of movement of the belt and the size of the paddle which is designed to be readily changed as desired.

Abstract: In exercise apparatus for underwater use including an apparatus frame, and movable members mounted on the frame to be moved by a user of the apparatus, flap members, e.g., flat plates, are mounted on the movable members for movement therewith within the surrounding water. The water resists movement of the flap members, hence provides resistance to movement of the members moved by the user. Disclosed are apparatus which, in use, simulate the movements of a cross-country skier, an ice-skating speed racer, and a rower of a row boat. Stop are also disclosed for selectively varying the resistance to movement provided by the flap members in response to the direction of movement of the movable members.