The apparatus provides an exercise device that is portable, versatile, and enables the user to match the resistance of the device with the normal physiologic length-tension relationship of skeletal muscle. The device adds resistance in the form of cartridges that are stackable to summate resistance and can connect to a variety of attachments for use with arms, legs, or trunk, i.e., handle, bar, loop, etc. Given the device’s portability, it can be used freestyle or mounted to various surfaces.

An exercise device including a frame extending across a first plane, the frame defining vertical stabilization bars extending in a second plane, the frame further defining a horizontal cross bar connecting the vertical stabilization bars and configured for supporting a lower leg of a user. A swivel base couples to the frame for supporting a foot of the user. The swivel base may be fixed in a variety of positions as well as set to somewhat freely rotate while coupled to a bias spring.

A fitness device comprises a force applicator comprising: a base; a first fixed wheel comprising a first center pivotally fixed to the base, and configured to allow rotation of the first fixed wheel about the first center; a second fixed wheel comprising a second center pivotally fixed to the base, and configured to allow rotation of the second fixed wheel about the second center, wherein the second fixed wheel is substantially in line with the first fixed wheel; and a movable wheel positioned above and between the first fixed wheel and the second fixed wheel, and comprising a movable center configured to move either toward, or away from, the first fixed wheel and the second fixed wheel, and is configured to allow rotation of the movable wheel about the movable center; an elastic element, placed between the nut and the fixing element, and a rope configured to be accommodated in the force applicator. Additional embodiments of the fitness device are disclosed herein.

A fitness device includes a main body, a left wing extending outwardly from the main body in a first direction, and a right wing extending outwardly from the main body in a second direction opposite the first direction. A cable extends from the main body to each of the left wing and the right wing. The fitness device further includes a gearbox, a spool assembly connected to an input end of the gearbox, a brake assembly connected to an output end of the gearbox, and a pulley assembly.

A lightweight, portable leg strengthening apparatus includes a footplate and calf support which form a leg rest, a top a friction free sliding element running longitudinally along and supported on a rectangular base. The leg rest is hinged at its attachment to the sliding element to allow a longitudinal tilting movement. The leg rest has adjustability at the hinge point at the ankle to enable alterations in the foot position. The apparatus uses resistance material/rubber cords or springs attached via a plate to a steel cable, travelling via an aperture in the end of the device to the back of the sliding element a top the body of the device to create tension as the leg rest a top the sliding element is moved longitudinally along the body of the device. Resistance can be varied and progressed by using different numbers of resistance cords/springs.

A comprehensive physical exercising apparatus with running exercising function and strength exercising function is provided and relates to the field of fitness equipment. The apparatus includes a base, a strength exercising unit disposed on the base, and a running exercising unit disposed on the base and used for running exercising of fitness personnel. The strength exercising unit includes a force-adjustable rotary device fixedly connected in the base and used for providing a load during the strength exercising of fitness personnel; and pulling ropes fixedly connected to the force-adjustable rotary device. During strength exercising, the fitness personnel pulls the force-adjustable rotary device through the pulling ropes. By setting the strength exercising unit and the running exercising unit, the apparatus has the functions of strength exercising and running exercising, provides the functional diversity of fitness equipment, and reduces the cost investment of family fitness equipment.

A swing trainer balance block apparatus for improving balance during swing training includes a foot board having a board top side, a board bottom side, a board front side, a board back side, a board left side, and a board right side. The board top side receives a portion of a user's foot. A base support is coupled to the foot board. The base support is coupled to the board bottom side and is elastically deformable to create instability in the foot board. One swing trainer balance block apparatus is used beneath each of the user's feet to stimulate stabilizer muscles while practicing swinging a baseball bat or a golf club.

An improved method of physiotherapy includes loading muscles of a torso of a user with a torque acting substantially about a vertical axis; and the user using an exercise equipment while the torso is loaded with the torque.

An exercise device includes a frame, handlebars supported by the frame, and a computing device. The handlebars include a yoke that is movable relative to the frame, a biasing element positioned between the yoke and the frame, and a sensor configured to measure a movement of the yoke.

A direct-drive bicycle training system and methods of using the same are provided. The system includes a bicycle trainer that rests on a support surface and supports a bicycle frame in an upright manner with respect to the support surface. The bicycle trainer includes a stator, a rotor that rotates with respect to the stator, a cassette affixed to the rotor, a support frame supporting the stator, rotor, and cassette, and a resistance applying mechanism that operatively couples to a portion of a drivetrain of the bicycle frame and applies varying levels of resistance to the portion of the drivetrain. The support frame moves with respect to the support surface in response to a force applied to the drivetrain of the bicycle frame during use of the bicycle training system, generating a more natural movement of the bicycle and simulating on-road use.