An exercise machine is disclosed. The exercise machine comprises a frame, a first motor, a second motor, a first slider, and a second slider. The frame includes a front side and a back side. A longitudinal axis of the first motor passes through the front side and the back side of the frame. The first motor drives a first cable and the second motor drives a second cable. The first slider positions the first cable and the second slider positions the second cable.

An exerciser and an elastic band. The exerciser includes first and second arms, a connector, and at least one elastic band. The first arm has a first body portion and first and second ends extending from the first body portion. The first body portion includes a first elongate slot and a first hinge portion disposed on opposite sides of the first body portion. The exerciser includes a second arm having a second body portion and first and second ends extending from the second body portion. The second body portion includes a second elongate slot and a second hinge portion disposed on opposite sides of the second body portion. The exerciser includes a connector rotatably coupling the first and second hinge portions of the respective first and second arms. The exerciser includes at least one elastic band formed as a continuous loop and disposed within the first and second elongate slots.

A resistive exoskeleton control system has a controller generating a positive resistance by shaping a closed loop integral admittance of a coupled human exoskeleton system wherein a frequency response magnitude of the integral admittance is lower than that of a natural human joint for desired frequencies of interest and generating an assistance ratio of approximately zero for the desired frequencies of interest.

In one embodiment a fitness device is disclosed. The fitness device may include a central handle having a body with a central aperture through the body. The device may also include a first rod removably coupled to the central handle at a first location and a second rod removably coupled to the central handle at a second location, opposite the first location. The device may also include an elastic member having a first end and a second end, the first end being coupled to the first rod and the second end being coupled to the second rod.

An exerciser and an elastic band. The exerciser includes first and second arms, a connector, and at least one elastic band. The first arm has a first body portion and first and second ends extending from the first body portion. The first body portion includes a first elongate slot and a first hinge portion disposed on opposite sides of the first body portion. The exerciser includes a second arm having a second body portion and first and second ends extending from the second body portion. The second body portion includes a second elongate slot and a second hinge portion disposed on opposite sides of the second body portion. The exerciser includes a connector rotatably coupling the first and second hinge portions of the respective first and second arms. The exerciser includes at least one elastic band formed as a continuous loop and disposed within the first and second elongate slots.

An exercise bike flywheel system includes a rotating shaft, a flywheel, one or more brake components, a bracket, first and second magnet components, first and second links, first and second gears and a driving device set. By driving the movement of the first magnet component and the second magnet component respectively through the first link and the second link, it avoids the situation of using a steel cable to pull the magnet component to the extreme position and getting stuck, thereby avoiding the generation of noise and motor burnout. If there is a program failure in the upper control instrument, you only need to adjust the program.

An exercise device and methods for performing physical exercise that improve strength, conditioning, and flexibility of an operator in a functional way using multiple body positions and exercising multiple muscle groups while keeping the spine in a safe and natural position, being simple to manufacture and use, and being compact and portable. The exercise device includes an elongated member, a hollow member, handles, a foot board system, and at least one resistance band. A resistance band is secured to the elongated member and the hollow member, and slidable movement of the hollow member and the elongated member relative to each other by the operator stretches a resistance band, which creates resistance to the movement, thereby exercising, strengthening, and conditioning the operator. The operator may use the exercise device in a number of configurations to perform a number of exercises in a number of body positions.

An exercise machine handle system which provides a unique handle and rotatable handle hub configuration to aid in performing a variety of exercises. The exercise machine handle system generally includes one or more handle assemblies each having a mounting bracket adapted to be removably secured to an exercise machine and including an upwardly-extending mounting hub shaft. A handle hub having a pair of curved handles extending in opposite directions therefrom is rotatably securable around an upper end of the handle hub shaft into a variety of locked positions. A third curved handle extends from an upper end of the handle hub in a similarly rotatably securable position. By removably securing one or more handle assemblies to an exercise machine, a user can benefit from a wide range of exercises supported by the adjustable handle assemblies.

Training neck muscles in such a way as to improve responsiveness to head acceleration forces, and to help prevent concussion and/or screen subjects who are at high risk of concussion, especially from contact sports, the neck muscles may be trained to improve strength and responsiveness to head acceleration. This may be accomplished by a device and/or method of training that incorporates an adjustable centripetal force about a fixed axis on the head. The centripetal force may be adjusted through varying the weight and/or length of a force arm. Neck muscle performance may be measured by the number of revolutions of the force arm completed over a pre-determined time period or the time required to complete a pre-determined number of revolutions of the force arm.

A hand exercise device comprising a base with a generally planar surface, and at least one string held at a substantial angle of inclination with respect to the planar surface of the base. The hand exercise device can be adapted to perform hand exercises that involve applying a pushing force to move the string such that the string is in contact with the planar surface of the base. The hand exercise device can be modified to include a plurality of strings of different thicknesses held at a substantial angle of inclination to facilitate variable exercise resistance. The hand exercise device can benefit patients by increasing grip strength, improving hand function, and/or alleviating joint pain.