A power measurement apparatus for an exercise machine may include an optical sensing component and a pair of code wheels supported by the frame of the exercise machine. The pair of code wheels may include a first code wheel having a plurality of first windows and a second code wheel having a plurality of second windows that individually at least partially overlap respective ones of the first windows to define respective effective window, the width of which may vary responsive to the application of power via at least one moment-producing assembly. The optical sensing component is operatively associated with the pair of code wheels to detect variations in the width of the effective window and thus measure the power applied via the moment-producing assembly.

A lateral elliptical trainer includes foot support platforms and an adjustment system configured to adjust the amount of lateral movement of the foot support platforms. The adjustment system includes a cable operative to adjust the amount of lateral movement of the foot support platforms. The cable is coupled to an actuator that is controllable by a user to enable the user to set the amount of lateral movement of the foot support platforms.

A stationary exercise machine according to the present disclosure may include a frame, a crankshaft rotatable supported by the frame, first and second lower linkages, and first and second crank arms connected to opposite sides of the crankshaft such that rotation of either of the first or second crank arm causes rotation of the crankshaft. Each of the first and second lower linkages may be operatively connected to the crankshaft and to a respective one of first and second pedals. Each of the first and second lower linkages may include a reciprocating member operatively connecting the respective one of the pedals with respective one of the crank arms. In some examples, each of the first and second lower linkages may include an adjustable linkage connected between the reciprocating member and the respective crank arm, the adjustable linkage operable to vary a distance between an output end of the reciprocating member and an input end of the crank arm. In some examples, each of the pedals may be pivotally connected to the respective reciprocating members.

In an exercise machine, foot platforms may travel in inclined circular paths to establish three dimensional operational characteristics. Platform support members may be rotationally synchronized by connected mechanical components such that they are maintained out of phase with each other by one half of a cycle or 180 degrees in counter rotational directions. Crank synchronization in an inclined plane during operation of the exercise machine may provide three-dimensional foot travel in vertical, lateral and longitudinal directions.

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 adjustable elliptical trainer is disclosed, which includes a body, a sliding rail, a connecting piece and a movement mechanism. The sliding rail has one end rotatably connected to the body around an axis and an other end detachably connected to the body by the connecting piece along a longitudinal extension direction of the sliding rail. The movement mechanism includes a sliding part matched with the sliding rail, and the sliding part is provided on the sliding rail and is slidable along the sliding rail. The axis is perpendicular to the longitudinal extension direction of the sliding rail, a first connection point is provided at a joint between the connecting piece and the sliding rail, and a second connection point is provided at a joint between the connecting piece and the body, the connecting piece is configured to be movable relative to the sliding rail and/or the body.

A system for patient rehabilitation includes a first movable frame including an articulating bed, wherein the bed is configured to be selectively articulated to an inclined position, a suspension system, wherein the suspension system is disposed within the articulating bed and is selectively adjustable to accommodate varying patient height, a harness, wherein the harness is selectively engageable with the suspension system, wherein the harness is selectively adjustable to accommodate varying patient sizes, a second movable frame including a walker, wherein the walker includes a pair of legs and a motor, wherein approximation of the two movable frames permits the patient to easily utilize the walker from the bed.

Described herein are embodiments of stationary exercise machines having reciprocating foot and/or hand members, such as foot pedals that move in a closed loop path. Some embodiments can include reciprocating foot pedals that cause a user's feet to move along a closed loop path that is substantially inclined, such that the foot motion simulates a climbing motion more than a flat walking or running motion. Some embodiments can further include reciprocating handles that are configured to move in coordination with the foot via a linkage to a crank wheel also coupled to the foot pedals. Variable resistance can be provided via a rotating air-resistance based mechanism, via a magnetism based mechanism, and/or via other mechanisms, one or more of which can be rapidly adjustable while the user is using the machine.

An exercise machine with a more natural gait which, in some embodiments, further allows for a variable stride length while in use. In one configuration, each side of the exercise machine has a first crank assembly connected at an upper location on a pedal arm and a second crank connected at a middle location on the pedal arm, and a pedal is attached to a lower location of the pedal arm. The first crank assembly is connected to the pedal arm by a crank arm. The second crank assembly is connected to the pedal arm via a crank arm pivotally attached to a crank link. The path of each pedal is determined by the lengths of crank arms and crank links of the first and second crank assemblies rotating in synchronous motion.

An exercise machine with a more natural gait which, in some embodiments, further allows for a variable stride length while in use. In one configuration, each side of the exercise machine has a first crank assembly connected at an upper location on a pedal arm and a second crank connected at a middle location on the pedal arm, and a pedal is attached to a lower location of the pedal arm. The first crank assembly is connected to the pedal arm by a crank arm. The second crank assembly is connected to the pedal arm via a crank arm pivotally attached to a crank link. The path of each pedal is determined by the lengths of crank arms and crank links of the first and second crank assemblies rotating in synchronous motion.