A modular resistance force system includes one or more resistance mechanisms. Each of the one or more resistance mechanisms includes a resistance element disposed about a portion of the axle, a resistance element housing configured to house the resistance element and a resistance substance disposed between the resistance element and the resistance element housing. When the resistance element housing is selectively engaged to rotate relative to the resistance element, that rotation causes a sheering force in a resistance material that is between the fixed and rotating surfaces. Gearing allows specific resistance mechanisms to be engaged to turn with the total of engaged resistance forces creating the sum total of the resistance force created by the modular force system to provide resistance exercise to the user.

Tri-Power Exercising device allows a rider to simultaneously, or on demand, exercise virtually all muscle groups in his lower and upper body. The device includes a bicycle frame, pedals, forearm bars, sliding seat, computer and electronic display recommending energy modulation amounts from various muscle groups to optimize physical performance on any given trek. Because riders can exercise virtually all muscle groups at once, they reduce their exercising time, continuously builds muscle tissue throughout their whole body, and exercises their cardiovascular and respiratory systems completely. Riders operate the device by rotating legs on the pedals, rotationally oscillating the forearm bars up and down with their arms and shoulders, and then use core muscles to pull and push the seat back and forth on the slider. Inverted racks, pinion gears, and one-way bearings turn this linear power from the oscillating forearm bars and sliding seat into torque that rotates the crank axle.

Disclosed is a bi-directional resistance exercise machine. The bi-directional resistance exercise machine is comprised of two flywheels that provide constant and variable resistance against the movement of a trolley during a push or pull movement. The bi-directional resistance allows a user to work antagonistic muscles in an efficient manner and in one single machine. Accordingly, the present invention provides resistance against a user while pulling a trolley along a track to work the core, legs, back, and biceps, and resistance against a user while pushing a trolley along a track to work the core, chest, triceps, and shoulders.

An exercise mechanism for a training machine is disclosed wherein the training machine includes a machine base and at least one handle which is operable to swing. The exercise mechanism includes at least one support and a rotary disk, wherein the at least one support is pivotally connected to the machine base and has a first end and a second end which are respectively on two sides of a portion pivoted to the machine base; the at least one support moves to generate a relative up and down displacement between the first end and the second end when the handle swings; the first end is pivotally connected to the machine base via a linkage assembly; the rotary disk would be driven to rotate when the second end moves whereby the exercise mechanism is capable of operating the training machine.

The presently disclosed subject matter is directed to a device that can be used to exercise and/or strengthen the muscles of the foot, ankle, and/or leg of a user. The device includes foot-receiving pedal that is sized and shaped to provide support for a user's foot or shoe. The pedal includes a first pair of brackets positioned at the rear of the pedal that allow connection to the support at a joint. The support can include a band that rests against the user's leg to provide comfort during use. The joint allows the pedal to move relative to the support. One or more resistive elements (e.g., springs) attach the support to a second pair of brackets positioned at the front portion of the pedal to provide resistance to the movement of the joint. The support includes an adapter that allows the attachment of the springs to be modified to vary resistance and/or be customized to a user's particular leg shape or length.

The exercise device according to an embodiment of the present invention includes: an arm pivotably connected to the frame and rotatable wherein the arm comprises an arm pivot axis aligned with a user's hip joint; a leg pad pivotably connected to a lower end of the arm and configured to contact the user's leg during use, a handle connected to a lower end of the seat or to the frame and extending therefrom; an arm starting region fixing unit which is provided to fix an exercise starting section; an arm length fixing unit for adjusting the length of the arm; a seat which is configured in correspondence to a hip and a thigh of a leg of two legs of a user so as to support the hip and the thigh of the leg that is not exercising and not to support the hip nor the thigh of the other leg of the user, and thus the seat is separated from the leg pad when viewed from above and is configured to enable the exercising leg of the user to move to the back of the user from a starting pose at which the hip and the thigh of the leg that is not exercising is placed on the seat and the exercising leg is placed on the leg pad and pulled to the chest of the user. Preferably, a leg pad may be configured to contact the user's thigh during use to protect the user's knee and ankle joints while exercising. Also, the exercise device allows the user to exercise the thigh and gluteal muscles while protecting knee and ankle joints of the leg that are not exercising.

A wrist and forearm exercise and rehabilitation device is disclosed. The device includes a base, a post extending vertically from the base, and a shaft rotatably inserted into the shaft. The shaft has a proximal end and a distal end. A biasing member has a first end attached to the shaft, such that rotation of the shaft exerts a force on the biasing member. A method of using the device is also disclosed.

A magnetically-controlled damping device has a fixing disk, a rotating disk, a plurality of friction-proof sleeves, a plurality of brake shoes, a plurality of magnets, an elastic element, and an operating element. The rotating disk has a plurality of guiding rods sleeved by the friction-proof sleeves respectively. By adjusting a distance between the magnets and a rotating wheel, a damping value of the magnetically-controlled damping device can be adjusted. Moreover, since the friction-proof sleeves are between the guiding rods and the guiding grooves, the guiding rods do not wear out. The magnetically-controlled damping device can provide a more stable damping value and a longer service life.

An exerciser has a baseplate with a fulcrum projecting outwardly from one side and wheels depending outwardly from the opposite side. A balanced-enhanced exercising platform is provided when the fulcrum is positioned downwardly on a floor, and alternatively, a balance-enhanced exercising dolly is provided when the wheels are positioned downwardly on the floor. The dolly may be biased by elastic resistance straps.

Disclosed is a bi-directional resistance exercise machine. The bi-directional resistance exercise machine is comprised of two flywheels that provide constant and variable resistance against the movement of a trolley during a push or pull movement. The bi-directional resistance allows a user to work antagonistic muscles in an efficient manner and in one single machine. Accordingly, the present invention provides resistance against a user while pulling a trolley along a track to work the core, legs, back, and biceps, and resistance against a user while pushing a trolley along a track to work the core, chest, triceps, and shoulders.