A liquid buoyancy muscle training device includes a liquid receiving tank receiving and holding liquid therein. A buoyantly submergible member is buoyantly submergible in the liquid contained in the liquid receiving tank and includes a regulation chamber formed therein. A bottom pulley is mounted inside the liquid receiving tank. A rope is connected to the buoyantly submergible member and wrapped around the bottom pulley and extends upward to project outside the liquid receiving tank. A liquid regulation tank is connected through a liquid supply tube to the regulation chamber to allow liquid to flow therebetween. A gas supplier is connected through a gas supply tube to the regulation chamber to selectively supply gas into the regulation chamber to change a ratio between liquid and gas inside the regulation chamber so as to change buoyance applied to the buoyantly submergible member by the liquid contained in the liquid receiving tank.

An exercise device for targeting the gluteus maximus muscle uses a stand to hold up a bellows pump against a vertical surface while a user repeatedly pushes the pump with a foot. The pump has a one-way inlet valve and a small restrictor opening to allow air to leave the bellows slowly, providing a mechanism for selecting different resistance values. A catch is used to keep the pump in the compressed position during storage.

An exercise device for targeting the gluteus maximus muscle uses a stand to hold up a bellows pump against a vertical surface while a user repeatedly pushes the pump with a foot. The pump has a one-way inlet valve and a small restrictor opening to allow air to leave the bellows slowly, providing a mechanism for selecting different resistance values. A catch is used to keep the pump in the compressed position during storage.

An exercise device providing a fore and aft horizontal component of striding motion that is dynamically user-defined, while providing a vertical component of the motion that is maintained on a predetermined vertically reciprocating path in some embodiments. The exercise device guides the user's foot in a pseudo-elliptical stride path, while providing a dynamically variable stride length that allows the user to move with a natural stride length. The exercise device allows tall and short users to extend or curtail the stride length to match their natural stride lengths. The length of the reciprocating path is dynamically adjusted during the exercise operation without equipment adjustments by changes in the length of the stride input by the user at a pair of foot engagement pads disposed on laterally spaced apart foot support members.

An exercise machine resistance adjustment system for providing an exerciser the ability to immediately adjust the resistance force by changing their body position on the movable carriage or end platforms. The exercise machine resistance adjustment system generally includes a frame, a carriage movably positioned on the frame, a spring connected to the carriage to apply a biasing force to the carriage, one or more left projections within the carriage adapted for a left hand of an exerciser to grasp, and one or more right projections within the carriage adapted for a right hand of an exerciser to grasp. The exerciser is able to efficiently adjust the amount of resistance force applied to the carriage by repositioning their hands (or feet) from a first set of projections at a first distance to a second set of projections at a second distance from the first end of the exercise machine.

An exercise device including two foot platforms riding on elongated rails for longitudinal motion relative thereto. The platforms are directly connected to each other by one or more elastic elements. The platforms are also connected by linear and/or rotary dampers to provide motion damping. In addition, weights and/or flywheels may be used to smooth the oscillations. When the two platforms are side-by-side, the elastic elements run in a substantially crosswise direction. A seated user may place the user's feet on the platforms and move his/her feet and lower legs back and forth in a scissoring motion to move the platforms in opposing directions along the rails. In so doing, the user overcomes the resistance of the elastic elements and dampers connecting the platforms. This provides the user with exercise and its accompanying benefits.

A sport swinging resistance exercise device is described that is designed for providing air resistance when swinging elongated sports equipment. An athlete can change the amount of air resistance by either using a different air resistance vane, or a resistance vane with variable opening features. An alignment marker for a right-handed athlete and second alignment marker one for a left-handed athlete is used to orient the sports swinging exercise device to operate optimally. The sports swinging exercise device is made mainly from durable, light-weight materials such as rip-stop nylon, for lightness and air blocking capabilities. When not in use the sports swinging exercise device and other optional air resistance devices can be stored in a small storage bag to keep them together and for easy transportation and accessibility in an equipment bag such as a batting bag.

An underwater striking bag device includes a bag having an annular upper compartment disposed in an upper section of the bag and receiving air therein, a neck extending through the upper section and communicating with a lower compartment receiving water therein, a removable cap connected to the neck, an air valve connected to the annular upper compartment to provide for filling air into the annular upper compartment, at least one handle connected to the bag for assisting in filling and removal of the water into the lower compartment.

An exercise device featuring a pair of knee joints, each pivotally coupled to a pair of calf linkages having foot pedals at their opposite lower end that support low impact user-defined natural exercise gait patterns. The knee pivots joints are supported and directed to travel by linkage and/or carriage systems that operate substantially below the user hip area, and direct the knee pivot joints in a variety of travel paths, ranging from having a constant arc, linear pathway, to having a variety of irregular arc shaped paths, as well as, pathways that may change during use. A secondary system coupled to the knee pivot support system, provides lift and dampening forces to influence the responsiveness of the foot pedals via the bending and straightening of the calf linkage about the knee pivot joint, yet do not restrict the back and forth travel of the knee joint.

Devices such as medical devices, including those for use in conducting pelvic muscle exercise, are generally provided. Embodiments herein relate generally to the medical device and consumer medical product fields, and in some embodiments, to a device for sensing, guiding, and/or tracking pelvic muscle exercise in men and women for the purpose of treating urinary incontinence, sexual dysfunction, and other pelvic conditions.