An exercise device is described which includes a platform having a first end and a second end opposite the first end; first and second wheels, wherein the first wheel is positioned proximate the first end and the second wheel is positioned proximate the second end and the first and second wheels are configured to roll across a surface as the exercise device is displaced along the surface; a first motor configured to apply a first torque to the first wheel where the magnitude of the first torque is related to the distance of the exercise device from a zero position and the direction of the first torque urges movement of the exercise device toward the zero position. Versions are also described with more wheels and more motors.

A fitness apparatus for training the human body includes a support member having a fastening member arranged at a first end of the support member for fastening the support member to an overhead support structure, preferably to a ceiling of a room. The fitness apparatus includes a weight bar for receiving weights having a free end and a mounted portion and a bearing member receiving the mounted portion and connects the weight bar to a second end of the support member which is opposite the first end. The weight bar is movable in at least two planes including a plane which extends perpendicularly to the longitudinal axis y of the support member and a plane in which the longitudinal axis y of the support member extends. The support member has a length L.sub.H of at least 100 cm.

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.

A connecting assembly designed for use with an exercise device is herein disclosed. The connecting assembly includes a ball joint linkage, a ball, and a ball joint arm. The ball joint linkage is designed to couple to a base. The ball is pivotally mounted in the ball joint linkage, with the ball joint arm extending from the ball and being designed to couple to various types of exercise equipment. The ball permits three degrees of rotational freedom movement of the ball joint arm relative to the ball joint linkage, offering a plethora of diverse exercises while increasing safety of the exercise activity.

An exercise device includes a strap. The strap includes a first surface and a second surface opposite the first surface. The strap is configured to be secured to a lower leg of a user such that the first surface of the strap interfaces with the lower leg of the user. The exercise device further includes a ball including an outer surface configured to be held by the user, a first connector extending from the ball, a second connector extending from the second surface of the strap, and a tension member. The tension member includes a first coupling mechanism and a second coupling mechanism at opposite ends thereof and configured to be releasably coupled to the first connector and the second connector via the first and second coupling mechanisms.

An exercise bar assembly includes a pair of rotating grip assemblies, each including a generally planar frame and a hand grip mounted within the frame for rotation within in the plane of the frame. The rotating grip assemblies are attachable to opposite ends of a center bar assembly along the longitudinal axis of the bar assembly. A plate bar assembly is attachable to each of the rotating grip assemblies opposite the center rod, with the plate bar assembly aligned with the longitudinal axis to form a weight lifting bar. A user-selectable elastic band is engageable between the pair of rotating grip assemblies along the longitudinal axis so that the elastic band resists rotation of each hand grip in each of the rotating grip assemblies. The rotating grip assemblies of the exercise bar assembly allow for the full range of motion of the bicep, and the elastic band creates a resistance exercise through the bicep's full range of motion.

The present invention includes an arm; a leg pad; a long rectangle shaped seat; a seat angle fixing unit on the seat, for adjusting the angle between the seat and the leg pad (when viewed from above) according to his/her purpose so that the seat can be adjusted to be perpendicular or parallel to the leg pad when viewed from above; and thus the to the user is allowed to move the exercising leg of the user to the back of the user or perform a motion for stretching his/her back straight from a starting pose at which the user lie down on his/her back placed on the seat, wherein the leg pad is placed above the user's pelvis.

An exercise device is described which includes a platform having a first end and a second end opposite the first end; first and second wheels, wherein the first wheel is positioned proximate the first end and the second wheel is positioned proximate the second end and the first and second wheels are configured to roll across a surface as the exercise device is displaced along the surface; a first motor configured to apply a first torque to the first wheel where the magnitude of the first torque is related to the distance of the exercise device from a zero position and the direction of the first torque urges movement of the exercise device toward the zero position. Versions are also described with more wheels and more motors.

A volute rotary resetting mechanism is provided, including a rotating wheel (100) and a main shaft (200); the main shaft (200) is arranged on the rotating wheel (100) in a penetrating manner; a turntable part (110) and a resilience part (120) are axially distributed on the rotating wheel (100); the turntable part (110) is connected to the main shaft (200) through a one-way bearing (111), so that the rotating wheel (100) drives the main shaft (200) to rotate in one way; a volute spring (121) is arranged on the resilience part (120); an inner end of the volute spring (121) is fixed on the resilience part (120), and an outer end is fixed on a volute reel (122); and the rotating wheel (100) and the volute reel (122) are relatively rotatable, so that the volute spring (121) is tightened to generate a resilience force for rotary resetting of the rotating wheel (100). A rowing machine with the volute rotary resetting mechanism is further provided.

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.