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 device featuring a pair of knee joints, each pivotally and respectively coupled to a pair of calf linkages, each of the pair of calf linkages having a foot pedal at an opposite lower end that supports low impact user-defined natural exercise gait patterns. The knee joints are supported and directed to travel by linkage and/or carriage systems that operate substantially below a user hip area and direct the knee joints in a variety of travel paths, ranging from a constant arc, a linear pathway, to a variety of irregular arc shaped paths to pathways that may change during use. A secondary system coupled to the linkage and/or carriage systems provides lift and dampening forces to influence a responsiveness of the foot pedals via bending and straightening of the calf linkage about the respective knee joint, yet does not restrict back and forth travel of the respective knee joint.

The invention relates to an elliptical trainer including: a frame having a first end and a second end; a rocker-rod mechanism hingedly connected to the first end of the frame; a pedal mechanism connected to the frame and the rocker-rod mechanism, the pedal mechanism being linked with the rocker-rod mechanism on the frame; a resistance adjustment mechanism provided at the first end of the frame, the resistance adjustment mechanism being connected to the pedal mechanism through a transmission mechanism for adjusting the movement resistance of the pedal mechanism. In the apparatus of the invention, there are two resistance adjustment ways i.e. manual resistance adjustment and electronic-controlled resistance adjustment, the user can select any one or both according to requirements. By combining the manual adjustment and the electronic controlled adjustment, the adjustable range of movement resistance is increased, and not only a wide range resistance control is achieved, but also fine-tuning of the movement resistance can be achieved manually.

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 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.

A variable stride exercise apparatus may provide a novel linkage assembly and corresponding exercise apparatus suitable for linking circular motion to relatively more complex, generally elliptical motion. Left and right cranks are rotatably mounted on a frame. A foot supporting linkage is movably connected between a rocker and the left and right cranks in such a manner that may provide variable paths of motion controlled by a user of the apparatus.

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.

A motor-less leg-powered curved treadmill produced that allows people to walk, jog, run, and sprint without making any adjustments to the treadmill other than shifting the user's center of gravity forward and backwards. A closed loop treadmill belt running between front and rear pulley rollers is formed with a low friction running surface of transverse aluminum, wooden, plastic, rubber or carbon fiber slats attached to each other in a resilient fashion. Since an essential feature of treadmill is the concave shape of the running surface of belt in its respective upper portion, the treadmill configurations insure that this shape is maintained during actual use. These configurations prevent the concave upper running surface portion from being pulled taut into a flat shape between the front and rear pulley rollers.

An exercise apparatus includes a frame body, two driving levers, two pedals, a linking device and at least one resistance device. The driving levers are pivotally connected to two side frames of the frame body, respectively. The pedals are connected to the two driving levers, respectively. The linking device is connected the driving levers so as to lead the driving levers to be swung reciprocally and simultaneously. The resistance device is driven by one of the driving levers so as to generate a magnetic resistance.

The specification relates to a mobile exerciser. The mobile exerciser can include a mobile exerciser frame; a foot rest assembly attached to the mobile exerciser frame having a working position and a stored position; and a pedal assembly attached to the mobile exerciser frame having a working position and a stored position. The mobile exerciser can be converted from a push mode to a pedal mode by moving the foot rest assembly into a stored position and the pedal assembly into a working position and the mobile exerciser can be converted from a pedal mode to a push mode by moving the foot rest assembly into a working position and the pedal assembly into a stored position.