An angle adjusting mechanism includes a first bracket and a second bracket hinged to each other. The second bracket is provided with two arc-shaped position-limiting slots, and a set of position-limiting holes is arranged in the position-limiting slots. A diameter of the position-limiting holes is larger than a slot diameter of the position-limiting slot. A bolt passes through the first bracket and the position-limiting slots and is movable along the first bracket and the position-limiting slots. An end portion of the bolt is provided with an adjusting segment and a position-limiting segment. A diameter of the adjusting segment is smaller than a diameter of the position-limiting segment. The adjusting segment and the position-limiting slot are engaged to adjust an angle of the second bracket relative to the first bracket. The position-limiting segment and the position-limiting holes are engaged to fix the first bracket and the second bracket after adjustment.

A power measurement assembly mounted within an axle. In a specific example, the axle is a spindle that is interconnects the cranks of a bicycle, exercise, bicycle, or other fitness equipment. The power measurement assembly may include strain gauges connected with an appropriate circuit (e.g., Wheatstone bridge) that provides an output of the force on the axle by a rider pedaling the crank. In the case of an axle, the strain gauges measure the torsion due to the applied torque on the crank. The value is converted to a power value by a processor and that value is then wirelessly transmitted for display. The processor and/or the transmitter may be mounted within the axle. A separate power measurement assembly may be mounted on one of the cranks, which may include its own processor and transmitter or may take advantage of the processor and transmitter within the axle.

The present invention addresses the technical problem of providing an ankle muscle resistance-training apparatus which induces an angle change of the ankle while the ankle is actively moving, and can improve strength of the ankle muscle by applying resistance force to the ankle movement. To this end, the ankle muscle resistance-training apparatus according to the present invention comprises: a support member; a first movement guiding shaft; an intermediate member; a second movement guiding shaft; a foot support; a first resistance force application part; and a second resistance force application part. The first resistance force application part is linked with the first movement guiding shaft and applies resistance force of an adjustable intensity against the active ankle movement of a user made with respect to the first movement guiding shaft in a state in which the foot is placed on the foot support, and the second resistance force application part is linked with the second movement guiding shaft and applies resistance force of an adjustable intensity against the active ankle movement of a user made with respect to the second movement guiding shaft in the state in which the foot is placed on the foot support.

An exercise apparatus includes a ring rotatably supported within a frame. First and second pedals are supported on first and second pedal shafts, and each pedal shaft is pivotally attached to the ring. Each pedal may be pivotal from a folded position wherein the pedal shaft lies on a radius of the ring, to a deployed position wherein the pedal shaft is perpendicular to a plane defined by the ring. Each pedal has a lock out device for holding the pedal in the unfolded position. The apparatus has no central hub or axle. Foldable or removable legs or supports, if used, may be attachable to the frame, or made part of the frame, for holding the frame in an upright position when the apparatus is in use. The exercise apparatus is compact and lightweight.

An exercising apparatus for exercising at least one limb, having a supporting frame and at least one crank which is arranged on a rotation shaft assigned to the supporting frame, and having at least one limb support which can be fastened to the at least one crank at different radial distances from the rotation shaft. A detector is provided for detecting the radial distance of the at least one limb support from the rotation shaft. The invention further relates to a limb support and to a method for determining the force acting on a limb support of an exercising apparatus.

An exercise machine of the type which have pedals or foot plates through which a person can, in use, transfer kinetic energy to the machine is described. In embodiments the exercise machine is configured such that the pedals or foot plats vibrate during exercise.

A crank apparatus includes a crank arm having at least one cavity on one of the surfaces of the crank arm, at least one thin material layer embedded within the at least one cavity and having an exposed outer surface, and at least one sensing element attached to the outer surface of the thin material layer. The crank arm is manufactured of a material with non-uniform strain characteristics, the thin material layer is manufactured of a material with uniform strain characteristics, the crank arm is adapted to be deformed by a force, the thin material layer is adapted to be deformed correspondingly with the deformation of the crank arm, the at least one sensing element is adapted to measure the corresponding strain of the thin material layer to measure the force applied on the crank arm. A bicycle and a stationary exercise bicycle equipped with the crank apparatus are further provided.

An exercise apparatus having a stationary frame, a handlebar assembly, a frontal-torso assembly, a resistance assembly, a rotatable crankset having a pair of crankarms with pedals mounted thereon where the crankset is positioned rearward of the handlebar assembly and the frontal-torso assembly.

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 inner assembly and an outer assembly of a hypotrochoid apparatus with a spindle located inside the inner assembly where a spindle proximate end and a spindle distal end each employ at least one mechanical interface. An eccentric hub provides a central throughbore for receiving a spindle, where the spindle is rotatably engaged with the eccentric hub and the inner bore which enhances vibration when the spindle is rotating and the eccentric hub is engaged.