Apparatus for performing a pull down exercise comprising: a frame, a seat, an input arm assembly interconnected to a resistance mechanism and a manually graspable mechanism disposed vertically above the user's trunk in a start sitting exercise position, the input arm assembly being pivotably mounted on the frame for back and forth travel along a generally forward to rearward direction and along a generally side to side direction orthogonal to the forward to rearward direction, the input arm assembly being rotatably pivotable around a first linear axis and a second linear axis in the respective directions on exertion by the user of a rearwardly downwardly directed force on the manually graspable mechanism.

A rotary exercise system in one embodiment includes a chassis configured for mounting to stationary support members, a rotational support shaft rotatably coupled to chassis, and handle bar assembly coupled to the support shaft and manually rotatable therewith by a user. A variable resistance mechanism applies a user-adjustable rotational resistance force on the support shaft, which changes the force required to be applied by the user to rotate the handle bar assembly during an exercise routine. In some embodiments, the resistance mechanism may be a frictional resistance mechanism, such as a drum or disc brake assembly. A user-operated control actuator allows the user to readily change resistance settings to increase or decrease the rotational resistance imparted to the support shaft by the resistance mechanism. In some implementations, the chassis may be detachably mounted on vertical supports of a power rack and adjustable in height for performing different exercise routines.

Apparatus for performing an arm extension exercise comprising: a frame, a seat having a seating surface (S), an elbow pad having an engaging surface (ES), an input arm assembly interconnected to a resistance mechanism and a manually graspable mechanism, the input arm assembly being adapted to reside in a start motionless position (SMP) that disposes the manually graspable mechanism in a start exercise position (SEP) that is disposed vertically above UW) the user's elbows, the input arm assembly being pivotable around a linear axis disposed rearwardly of the user's elbow.

Improved exercise machines having a movable user engagement member and a user support movably mounted on a movable slide support surface and a slidable wedge concurrently engaging the movable slide support surface and a stationary slide support surface and an operative linkage system connecting the user engagement and the slidable wedge such that movement of the user engagement causes the slidable wedge to engage the slide support surfaces changing the distance between at least a portion of the slide support surfaces and thereby creating a multi-dimensional articulating movement of the user support during an exercise motion.

Apparatus for performing a pull down exercise comprising: a frame, a seat, an input arm assembly interconnected to a resistance mechanism and a manually graspable mechanism disposed vertically above the user's trunk in a start sitting exercise position, the input arm assembly being pivotably mounted on the frame for back and forth travel along a generally forward to rearward direction and along a generally side to side direction orthogonal to the forward to rearward direction, the input arm assembly being rotatably pivotable around a first linear axis and a second linear axis in the respective directions on exertion by the user of a rearwardly downwardly directed force on the manually graspable mechanism.

An exercise apparatus includes a pair of apparatuses wearable on feet of a user. Each apparatus is configurable between expanded configurations and compressed configurations to simulate a selected motion when the user wearing the pair of apparatuses travels by foot. One of the apparatuses can move towards an expanded configuration while the other apparatus moves towards a compressed configuration.

An apparatus for strengthening arm muscles, including a framework, a tabletop on the framework, an elbow pad and a touch pad on the tabletop. A hinged lever with a handle is coupled to a horizontal shaft, which in turn is coupled to a vertical shaft. A grooved wheel is disposed on the vertical shaft under the tabletop, and a wire is laid in the groove of the wheel. One end of the wire is fixed to the wheel and the other end of the wire is detachably fixed to a counterbalance weight, so that when the counterbalance weight is in a lower extreme position, the lever is in an initial position, and when the lever is in a reclined position, the counterbalance weight is in an elevated position relative to its lower extreme position.

A transmission device is provided for bodybuilding devices or bicycles, including an axle that is operatively coupled to a sprocket assembly for collaborative operation. Two cranks are provided, having contact surfaces including one way bearing mounted thereto for fitting to two ends of the axle. Two clutch control assemblies are controllable through a wire control assembly such that the clutch control assemblies are selectively engageable with or disengageable from two cranks respectively to set the cranks in an operation mode of regular bicycle pedaling or an operation mode of one side pedaling alone or two side parallel pedaling. An important feature is that the wire control assembly is of an arrangement involving a mateable combination of two halves of which the parts are made of plastics, where assembly for centering is achieved with recess-projection engagement for better assembly accuracy.

Disclosed herein are various embodiments of an exercise apparatus. In certain embodiments, an exercise apparatus comprises a frame and a seat assembly, the seat assembly comprising a seat, the seat configured to move between a first position and a second position, wherein the first position accommodates use of the exercise apparatus by a user sitting on the seat and wherein the second position accommodates use of the exercise apparatus by a user sitting in a wheelchair. The seat assembly may be pivotably coupled to the frame. The seat assembly may comprise a stop configured to inhibit movement of the seat, and may further comprise a biasing element that is biased to disengage the stop.

Portable powered stretching exosuit (PPSE) systems and methods according to various embodiments are described herein. The PPSE can be used to facilitate stretching routines for athletics, rehabilitation, or for therapeutic purposes such as maintaining mobility for DMD patients. The PPSE is comfortable, relatively easy to don and doff, and in a form factor such that the PPSE can be worn during the wearer's normal activities. The PPSE may be self-powered, and automatically perform or assist with specific stretching routines. PPSEs may be optimized for one or more specific stretches, whether for athletic performance, medical purposes or rehabilitation following surgery or injury.