An exercise machine comprises an arm support, including: a carriage configured to slide within a track attached to the exercise machine; and a support assembly that floats the carriage relative to the track, wherein the support assembly is disengaged by the application of force via the arm. An exercise machine comprises a rotatable column, wherein the column supports an arm, and a gear detent mechanism to support a discrete number of positions for the rotatable column. An exercise machine comprises a tiltable arm, and a mechanism to support a discrete number of positions for the tiltable arm.

Systems and methods for fitness tracking are provided. A fitness tracking computing system conveys information over a network to a visual display of a device viewable by a user. The device can be a smart phone, tablet computer, or a laptop. Instructions are conveyed to the visual display that identify an exercise to be performed by the user. during performance of the exercise by the user, an exercise status summary is provided to the visual display. Based on the user's movements during performance of the exercise, as tracked by a camera, feedback is provided to the visual display.

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.

A torque detection device of fitness equipment, the fitness equipment contains: a frame, a flywheel rotatably connected on the frame, and the torque detection device. The torque detection device includes a loading sensor and a magnetoresistance mechanism. A magnet holder of the magnetoresistance mechanism is rotatably connected on a fixer by way of a rotary shaft and has multiple magnets. A steel cable is configured to actuate a magnet holder to rotate along the rotary shaft so as to change a position of a respective one magnet of multiple magnets relative to a flywheel, and an area of the respective one magnet which covers the flywheel is changeable, thus changing a magnetoresistance of the respective one magnet of the magnet holder when the flywheel rotates. The loading sensor is configured to detect a reaction force of a magnetoresistance mechanism so as to calculate a torque value of the flywheel.

A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

A device for use with an exerciser device, such as a reformer, which permits adjustment of a resistance system, even when connected to a resistance source, by selectively relieving a resistance force imparted on the resistance adjustment system when changing a resistance and automatically reengaging the resistance force when exercising. A strain relief is coupled to a linkage between the resistance source and a resistance adjuster. When engaged, the strain relief selectively reduces the resistance force transmitted through the linkage to the resistance adjuster to permit movement of the resistance adjuster relative to a purchase. When disengaged the strain relief permits transmission of the resistance force through the linkage to the resistance adjuster.

A weight apparatus includes a handle, first and second anchorages mounted to first and second ends of the handle, respectively, the handle and the first and second anchorages having an axially extending opening, first and second rods axially movable inside the axially extending opening and adapted to be moved axially relative to the axially extending opening in opposite directions upon rotation of first and second pinion gears in the first and second anchorages, respectively, that engage with first and second racks on the first and second rods, respectively, and a lock having a locked condition in which rotation of the first and second pinion gears is prevented and an unlocked condition in which rotation of the first and second pinion gears is permitted.

A Smith machine includes: a frame part formed to have an exercise space, and including vertical two-sided pillars, a horizontal beam for connecting upper ends of the two-sided pillars, and a support base formed in lower portions of the two-sided pillars; a swing part formed in the exercise space, hinged to the support base via a shaft member, and having a rack bar having a plurality of locking jaws such that the height of the barbell can be adjusted; a guide part which is integrally coupled to the swing part so as to swing together, and guides the rise or fall of the barbell; an angle adjustment part for adjusting the angle of the swing part; a barbell part coupled to the guide part so as to be raisable; and a load support part for supporting an inclination load of the swing part by elastic force.

A stride emulator device for efficiently utilizing human leg power for transference to a rotary drive system including a pair of levers, at least two gears, at least two crankshafts having crank arms, and where each lever includes a cam and cam track.

Provided are apparatuses for augmenting human speed, human-driven compliant mechanisms, artificial limbs to augment human movement, and the like. The apparatuses can include variable stiffness mechanisms including springs that can be configured to selectively store and subsequently release energy generated by human movement. The apparatuses can selectively release the captured energy supplied by the human to provide force and power output beyond the physical capability of the human.