A hand-held centripetal exercise devices are shown and disclosed. In one embodiment, the device includes an outer shell having a smooth outer surface. The outer shell defines an internal volume. The device additionally includes a single ball sized to be contained within the internal volume. The single ball having a predetermined mass.

A step exercise apparatus with a self-centering pedal system. The system comprising a frame and a seat supported from the frame. A first pedal assembly and a second pedal assembly are pivotally supported from the frame positioned so as to be manipulable by a user seated in the seat. A linkage is positioned in communication with the first pedal assembly and the second pedal assembly such that movement of either pedal assembly in a first direction causes movement of the other pedal assembly in a second direction opposite of the first direction. A brake is preferably employed for resisting motion of the first pedal assembly and the second pedal assembly in at least the first direction. A centering system positions the first and second pedal assemblies in a substantially central position when not being manipulated by the user.

A wrist exerciser includes a housing and a gyroscopic member. The housing includes a first cover, a second cover, a supporting portion and a protective assembly. The supporting portion and the protective assembly are disposed between the first cover and the second cover. Two ends of the supporting portion that are opposite to each other are in contact with the first cover and the second cover, respectively. A stiffness of the supporting portion is greater than a stiffness of the protective assembly. The protective assembly includes a rail and a buffer portion that are corresponding to each other. The gyroscopic member includes a ring and a rotor. The ring is slidably disposed on the rail. The rotor includes a ball disposed in the housing and a shaft which penetrates the ball. Two ends of the shaft that are opposite to each other are pivotally connected to the ring.

An exercise device has a frame supporting guide links to which foot support links are pivotally attached. Upper pulleys are pivotally connected to the frame. Lower pulleys are connected to the foot support links. A vertical drive assembly is coupled to the foot support links by flexible elements. The flexible elements extend from the vertical drive assembly, about an upper pulley, about a lower pulley and to a second end connected to the frame.

In various embodiments, provided herein are systems, methods, processes, and devices for providing locomotive rehabilitation to a subject via one or more gait motions that substantially accurately mimic motions performed in healthy, natural gait cycles. The system may mimic natural gait motions via footplates and handles, and one or more linkage systems. In particular embodiments, the system may further include a motor unit and/or clutch for providing controlled forces assisting or resisting motions of a linkage system. Further, the system may include a tower for operating in a standing or seated position. In at least one embodiment, the system includes a body weight support system that provides offloading forces to a subject.

An exercise treadmill includes a machine body, which has at least two rollers, a flywheel linked with one of the two rollers, a support assembly mounted between the two rollers, and a running belt fitted around and engaged with the two rollers and arranged around the support assembly. The exercise treadmill is provided with an accelerating means so that, while a user is walking or running on the machine body, the treading force provided by the user allows the running belt to be accelerated to move around the two rollers for generating electrical power. In addition to improving body heath, the electrical power produced by the treadmill in the training activity can reduce the electrical consumption of city power.

A drag gain structure for the gravity wheel of fitness equipment includes an eccentric driving member disposed on the first side of the gravity wheel, which includes inner and outer side plate sections, and an interconnecting piece. The interconnecting piece is rotationally coupled to at least one of the plate sections. One end of outer side plate section is fitted over and fixed to the shaft, and one end of inner side plate section is connected to an eccentric position of gravity wheel through the first bias joint pin. A bearing pedestal is disposed on the second side of the gravity wheel, including a bearing screwed on the shaft, a pedestal shell fitted over the bearing and a radial protruding plate on the periphery of pedestal shell. The protruding end of the radial protruding plate is connected to an eccentric position of gravity wheel through the second bias joint pin.

Apparatuses, systems, and methods of use are disclosed for enhancing upper body exercise. An apparatus includes a domed hand support section, the domed hand support section having a plurality of recesses configured to receive a palm, thumb, and fingers of a user's hand while the user's hand is held in a naturally curved open-position. The apparatus also includes a surface engagement section secured to an underside of the domed hand support section and configured to engage a supporting surface. When the surface engagement section is deployed on the supporting surface and the palm, thumb, and fingers of the user's hand are placed in the plurality recesses on the domed hand support section, the domed face supports the user's hand in the naturally curved open position while the user exerts force against the domed hand support section and that is at least partially directed toward the supporting surface.

Apparatuses, systems, and methods of use are disclosed for enhancing upper body exercise. An apparatus includes a domed hand support section, the domed hand support section having a plurality of recesses configured to receive a palm, thumb, and fingers of a user's hand while the user's hand is held in a naturally curved open-position. The apparatus also includes a surface engagement section secured to an underside of the domed hand support section and configured to engage a supporting surface. When the surface engagement section is deployed on the supporting surface and the palm, thumb, and fingers of the user's hand are placed in the plurality recesses on the domed hand support section, the domed face supports the user's hand in the naturally curved open position while the user exerts force against the domed hand support section and that is at least partially directed toward the supporting surface.

A dynamic training system provides elevated load and energy demand on a rider of a moving bicycle out on the road or track. Resistance to movement of the bicycle is provided by a resistance unit which may include an eddy current brake. A processor may generate a control signal that adjusts the resistance to replicate the effort of riding a predetermined course or training protocol. Multiple riders at different times or locations can compete on a common virtual course. A stronger rider can be restrained by a heavier imposed load to keep pace together with a weaker rider, without compromising total power expenditure to keep the riders together.