A pedal assembly for electromechanical exercise or rehabilitation of a user is disclosed and can include pedals to engage appendages of a user. A spindle supports each pedal and has a spindle axis. A pedal arm assembly is located between the spindle and a rotational axle of the equipment. The pedal arm assembly is radially offset from the spindle axis to define a range of radial adjustability for the pedal relative to the rotational axle. The pedal arm assembly can include an electrically-actuated coupling assembly to adjust the radial position of the pedal in response to a control signal, and regulate motion of the user engaged with the pedals.

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 embodiment of the present invention provides an elliptical trainer including structures featuring a first amplitude, a second amplitude, and a third amplitude. By the driving of cranks and the combination of the three amplitudes, the elliptical trainer's pedals move along a closed ellipse path. In addition, the first amplitude is more than twice or three times of the third amplitude, resulting in a wide adjustment range of the stride of the pedal. Accordingly, the elliptical trainer is applicable to users of various heights.

A media holder for an exercise machine in accordance with some examples herein may include a first portion, a second portion movable relative to the first portion; and a size adjustment mechanism movably connecting the second portion to the first portion to enable resizing of a media holding region independent of whether a media item is present in the media holding region. The size adjustment mechanism may include an arm pivotally coupled to the second portion and configured to selectively engage the first portion in a plurality of positions.

An elliptical exercise machine may include a base, one or more upright stanchions coupled to the base and extending upward from the base and supporting first and second cranks. The first crank may support a first crank arm. The first crank arm may support a first pedal leg hanging downward from the first crank arm. The first pedal leg may support a right pedal. The right pedal may be configured to swing forward and rearward and to raise upward and lower downward. The second crank may support a second crank arm. The second crank arm may support a second pedal leg hanging downward from the second crank arm. The second pedal leg may support a left pedal. The left pedal may be configured to swing forward and rearward and to raise upward and lower downward.

A pedal assembly for electromechanical exercise or rehabilitation of a user is disclosed and can include pedals to engage appendages of a user. A spindle supports each pedal and has a spindle axis. A pedal arm assembly is located between the spindle and a rotational axle of the equipment. The pedal arm assembly is radially offset from the spindle axis to define a range of radial adjustability for the pedal relative to the rotational axle. The pedal arm assembly can include an electrically-actuated coupling assembly to adjust the radial position of the pedal in response to a control signal, and regulate motion of the user engaged with the pedals.

An embodiment of the present invention provides an elliptical trainer composed of structures featuring a first amplitude, a second amplitude, and a third amplitude. By the driving of cranks and the combination of the three amplitudes, the elliptical trainer's pedals move along a closed ellipse path. In addition, the first amplitude is more than twice or three times of the third amplitude, resulting in a wide adjustment range of the stride of the pedal. Accordingly, the elliptical trainer is applicable to users with various heights.

An exercise machine for a near-elliptical arm movement, comprising at least one manual arm-moving structure system enabling an elliptical movement pivotably connected to a cycling pivot shaft structure at one position thereof, and performs a circular movement, elliptical movement, near-elliptical movement, or unidirectional full-cycle movement; and pivotably connected to a reciprocating pivot shaft structure at another position thereof, or performs a linear or curved bidirectional reciprocating movements under restriction and control of a related guide wheel structure system or guide rail structure system. Other portions of the manual arm-moving structure enabling the elliptical movement perform a near-elliptical movement under the collective action of systems related to the full-cycle movement or the bidirectional reciprocating movement. An arm of a user is also moved in a near-elliptical trajectory by means of a corresponding handle structure directly or indirectly provided on the manual arm-moving structure enabling the elliptical movement.

An exercise machine may include a reciprocating linkage that supports one or more pedals configured to move in a closed loop (e.g., elliptical) path as a user exercises with the machine. The exercise machine may be adjustable to vary a characteristic of the exercise provided by the machine, for example by changing an incline of a rail supporting the reciprocating linkage, and thus an angle of the closed loop path. The exercise machine may vary the incline with a lift mechanism operatively associated with the front upright frame of the machine, which may also support a resistance assembly, all in a compact form factor that may be more aesthetically pleasing and practical for relatively smaller exercise spaces.

A linkage mechanism with an elliptical motion trajectory includes a main body having two guiding tracks with a changeable lifting angle, a flywheel assembly and two handles installed on a front side of the main body, a first linkage rod pivotally attached between guiding rods of two driving linkage assemblies and two cranks of the flywheel assembly. The two pedals respectively include a front end pivotally attached onto each one of the cranks. Each one of the pedals moves together each one of the guiding rods and along each one of the guiding tracks and drives the flywheel assembly and each one of the handles to move forward and backward.