An apparatus for securely and removably attaching an apparatus for adjusting the hydrodynamics of a watercraft is provided. The apparatus is attached to the watercraft by an elastic cord. One or more flow resistance members are removably attached to the cord. The cord is looped in a configuration that allows for infinite length/size adjustment. A closure for forming the loop can be released, allowing the user to add or subtract resistance members to achieve a desired resistance.

A protective rowing device for compression of the abdomen is provided that comprises a brace and U-shaped support member that may connect to a rowing machine seat and rail.

A water-resistance rowing machine has a frame body, a water-resistance unit, at least one blade wheel, a pulling strap, and a seat. The frame body has an elongated beam and a pulley rotatably mounted on the frame body. The water-resistance unit has a water tank extending along the elongated beam, a rotating shaft disposed in the water tank and extending along and being parallel to the elongated beam, and a strap wheel assembly connected with the rotating shaft to drive the rotating shaft to spin. The at least one blade wheel is mounted on and rotated with the rotating shaft. The pulling strap is wrapped around the pulley and has an end connected with the strap wheel assembly and a handle formed on another end of the pulling strap. The seat is mounted on the elongated beam.

An exercise apparatus (10) has two wheels (12, 12′) rotatably mounted to a base (14, 14′), spaced apart and each located within a pair of wheel housings (15, 15′), respectively. Pivotably connected to each wheel is a cam (16). Another end of the cam (16) is pivotably connected to a push rod (17) which is pivotably connected to a handle (18) which is rotatably mounted in a housing (20). The pair of handle housings (20) are pivotably and respectively mounted to the pair of cams (16) such that movement of each arm in a vertical plane up or down by operating on the respective handle causes an elliptical rotation of the respective cam relative to the respective wheel (12, 12′).

A treadmill may include a deck, a first pulley incorporated into the deck, a second pulley incorporated into the deck, a tread belt surrounding the first pulley and the second pulley, a motor in mechanical communication with at least one of the first pulley and the second pulley to move the tread belt in a first direction, and a runaway mitigation mechanism in at least indirect mechanical communication with the motor. The runaway mitigation mechanism at least mitigates a motor runaway condition.

An aquatic exercise device and method of use are described herein. The aquatic exercise device provides for a full body, low impact, and decompressing workout that is unattainable by any existing product on the market. The aquatic exercise device features a buoy, a fastening mechanism, a user attachment mechanism, and a bridge connecting the buoy, the fastening mechanism, and the user attachment mechanism.

An improved fitness/exercise apparatus using full or half tire that rotates 360 degrees about a fixed axle. A user lifts/pushes the tire, thus rotating the tire end over end, while the apparatus creates resistance to the rotation via a variety of means, such as a magnetic brake, a viscous brake, a pad and disc brake or a motor-controlled brake system.

An exercise machine having non-matched cable pairing is provided. The exercise machine may include a frame, a resistance element, at least a first plurality of corresponding engagement points and a second plurality of corresponding engagement points operatively associated with the frame, and first and second elongated flexible members routed through a pulley system. The first flexible member may be operably associated with the resistance element and may include opposing cable portions associated with and extending between one of the first plurality of corresponding engagement points and another engagement point not in the first plurality of corresponding engagement points. The second flexible member may be operably associated with the resistance element and may include opposing cable portions associated with and extending between another of the first plurality of corresponding engagement points and another engagement point not in the first plurality of corresponding engagement points.

An aquatic exercise system may include a water tank including a watertight entrance that may allow a user enter and exit the water tank. The aquatic exercise system may further include a vertical watertight gate that may be disposed within the water tank and divide an interior of the water tank into a first tank portion and a second tank portion, a treadmill assembly that may be disposed within the second tank portion, and a water circulation mechanism that may be connected in fluid communication with the first tank portion and the second tank portion and transfer the water between the first tank portion and the second tank portion.

A treadmill may include a deck, a first pulley incorporated into the deck, a second pulley incorporated into the deck, a tread belt surrounding the first pulley and the second pulley, a motor in mechanical communication with at least one of the first pulley and the second pulley to move the tread belt in a first direction, and a runaway mitigation mechanism in at least indirect mechanical communication with the motor. The runaway mitigation mechanism at least mitigates a motor runaway condition.