A multiple position adjustable exercise device includes a first plate, a second plate and an elastic member. The second plate is pivotally connected with the first plate. The elastic member is disposed between the first plate and the second plate, and when the second plate rotates relative to the first plate, the elastic member is twisted for providing an elastic recovering force. An initial position of the second plate relative to the first plate is adjustable for adjusting the elastic recovering force.

An auxiliary drive for a training device, comprising a first force measuring device, a control device, and a drive unit, wherein the control device determines a target force F.sub.S,max, the first force measuring device determines an actual force F.sub.S which is applied to a main traction means and which is caused by an acceleration of a movable mass connected to the main traction means. The first force measuring device also transmits the determined actual force F.sub.S to the control device, and the control device also compares the actual force F.sub.S with the target force F.sub.S,max and controls the drive unit such that, if the actual force F.sub.S exceeds the target force F.sub.S,max, an auxiliary force F.sub.Z having a component that offers resistance to a gravitational acceleration acts on the movable mass by connection of the drive unit to the movable mass.

A training device and a method for training a foot using the using the device; the device including a fulcrum placed at a center, four projections, and projecting in different directions from the fulcrum, each of the four projections having, at least in a portion thereof, elastic members that are bendable. The training device is configured to improve foot muscle strength by bending and stretching the elastic members. At least two of the four projections have different degrees of elasticity in flexure as determined when a force is applied to a distal end of each of the at least two projections to bend the elastic members. The four projections project in cross directions from the fulcrum at the center, and, for each pair of projections that oppose each other across the fulcrum, the projections are arranged on a straight line. None of the four projections has an annular structure.

A multifunctional cardiovascular exercise machine may include a frame including a first and second end attached to one another by a pair of ski rails and a centrally located center frame rail. A flywheel may be operatively mounted to the frame, and a pulley system may be mounted to the frame, the pulley system supporting and routing a pull rope, wherein the pull rope is operatively engaged with the flywheel, and a free end of the pull rope is removably engaged with a pull bar, a pair of ski poles, and/or a pair of pull handles. A sliding seat may be operatively attached to the flywheel and slidably mounted to the center frame rail, and a pair of footrests may be mounted to the frame proximate to the flywheel.

An exercise device having a unique asymmetrical shape with rounded ends of differing radii to provide stability and added resistance.

Disclosed is a moving cyclic machine which is implemented to perform an elliptical motion or interpolating curve motion independently from pedal rotation in a mechanical aspect so as to remedy boredom and improve a difficult exercise process of existing cycle exercise and to provide interest and motivation by increasing a level of a sense of immersion such that a user can continuously do lower body exercise and aerobic exercise for a long time everyday.

An apparatus for receiving one or more activity attachments including a deck having one or more openings along a long axis of the deck and between the top surface and the bottom surface of the deck. Each of the one or more openings having a circular aperture for receiving an accessory of a set of accessories. Each accessory of the set of accessories providing an activity for a user of the activity. Each accessory having an attachment platform configured to attach the accessory to the board. The attachment platform having a locking mechanism to engaging with a complementary locking mechanism of the board.

The Chair Exerciser is an apparatus and method to exercise one's core, back, and legs while working on tasks that are normally performed seated. These tasks include computer work, watching television, or computer gaming. The Chair Exerciser fits on a regular chair and one sits upon it. The Chair Exerciser's resistance can be adjusted to the suit the needs of the user. The multitasking of work and exercise is an attractive benefit to the Chair Exerciser. The Chair Exerciser can also be formed as an integral part of the chair as opposed to a portable unit.

A wearable connection and resistance training system having a waist strap, and left and right upper leg straps and an attachment point device which serves as a connection piece configured to be held underneath a user's torso and between the user's legs to provide rotational resistance to improve and strengthen rotational abilities of a user. An alignment attachment piece and foot straps can also be attached to provide downward force/tension.

A balance board may include an upper plate having a top surface configured for a user to stand on; a base assembly configured to contact the ground; a center assembly pivotally connecting the upper plate with the base assembly; and an adjustable tilt system comprising at least a first adjustable angle stop configured to be rotated at adjustable intervals to change a maximum angle by which the upper plate may be tilted relative to the base assembly.