An exercise device includes a base member configured for engaging a mounting structure including a first surface and an oppositely arranged second surface. The first surface of the mounting structure faces towards the user and the second surface of the mounting structure is configured to engage the base member. A coupling system of the exercise device couples the base member to the mounting structure. An arm is pivotally coupled to the base member and is configured to pivot between a retracted position and an operational position. A resistance member is directly coupled to the arm and includes a control member configured to be manipulated by a portion of the user.

A limb exercise machine includes a first transmission unit and a second transmission unit. A left-hand control member, as well as a right-foot control member, is connected to the first transmission unit. The left-hand control member and the right-foot control member are pulled by the first transmission unit to be moved synchronously. A right-hand control member, as well as a left-foot control member, is connected to the second transmission unit. The right-hand control member and the left-foot control member are pulled by the second transmission unit to be moved synchronously.

A limb exercise machine includes a first transmission unit and a second transmission unit. A left-hand control member, as well as a right-foot control member, is connected to the first transmission unit. The left-hand control member and the right-foot control member are pulled by the first transmission unit to be moved synchronously. A right-hand control member, as well as a left-foot control member, is connected to the second transmission unit. The right-hand control member and the left-foot control member are pulled by the second transmission unit to be moved synchronously.

Tri-Power Exercising device allows a rider to simultaneously, or on demand, exercise virtually all muscle groups in his lower and upper body. The device includes a bicycle frame, pedals, forearm bars, sliding seat, computer and electronic display recommending energy modulation amounts from various muscle groups to optimize physical performance on any given trek. Because riders can exercise virtually all muscle groups at once, they reduce their exercising time, continuously builds muscle tissue throughout their whole body, and exercises their cardiovascular and respiratory systems completely. Riders operate the device by rotating legs on the pedals, rotationally oscillating the forearm bars up and down with their arms and shoulders, and then use core muscles to pull and push the seat back and forth on the slider. Inverted racks, pinion gears, and one-way bearings turn this linear power from the oscillating forearm bars and sliding seat into torque that rotates the crank axle.

A lat pulldown fitness device includes a base, a magnetorheological fluid (MRF) resistance provider, a motor, a gear train, pulleys, a cable assembly, a pulldown bar and a controller. The MRF resistance provider and the motor provide a resistance functioning as a load weight of pulling down the pulldown bar. The controller controls a current input to the MRF resistance provider to change the strength of the resistance generated from the MRF resistance provider. During a workout, the resistance provided by the lat pulldown fitness device is changeable precisely, conveniently, and quickly. Unlike its conventional counterparts which require bumper plates for use as weights, the lat pulldown fitness device is not limited to weight adjustment based on unit bumper plate but features plenty choices and controllable resolution in terms of strength of training. The MRF resistance provider is more compact and lightweight than its conventional counterparts.

A weight training apparatus includes a telescoping pivot arm comprised of a concentric arrangement of an outer tube and an inner tube and configured to pivot about an axis and receive a weight at a predetermined position. The weight training apparatus further includes an actuator attached to the telescoping pivot arm and configured to cause relative motion between the inner tube and the outer tube to change a length between the predetermined position and the axis. The weight training apparatus further includes a sensor configured to output a signal indicative of an angular position of the telescoping pivot arm about the axis and a controller programmed to operate the actuator to cause the length to change based on the signal to achieve a target resistance profile.

A locking device for an exercise system may include at least one moveable assembly that is in communication with a resistance mechanism. The locking device has an actuating device for selectively engaging the locking device, a locking member having a contact portion, wherein the contact portion of the locking member is not in contact with the resistance mechanism of the exercise system when the actuating device is in a first position, thereby allowing movement of the at least one moveable assembly, and wherein the contact portion of the locking member is in contact with the resistance mechanism of the exercise system when the actuating device is in a second position, thereby preventing movement of the at least one moveable assembly.

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.

A stationary exercise machine according to the present disclosure may include a frame, a crankshaft rotatably 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 crank arms causes rotation of the crankshaft. The lower linkages may be operatively connected to the crankshaft and to a respective one of first and second pedals. Each of the lower linkages may include a reciprocating member operatively connecting one of the pedals with one of the crank arms. Each of the lower linkages may include an adjustable linkage connected between the reciprocating member and the respective crank arm, the adjustable linkage may vary a distance between an output end of the reciprocating member and an input end of the crank arm. Each of the pedals may be pivotally connected to the respective reciprocating members.

A climbing exercise apparatus having homolateral and contralateral modes of operation may include a frame supporting generally vertically oriented movable slide members in spaced apart relationship to one another. The slide members may include foot supports secured at the lower distal ends thereof and handlebars in adjustable telescopic relationship with the slide members. Handgrips may be rotatably mounted proximate the upper distal ends of the handlebars. The handgrips may be rotatably about a canted axis which is canted relative to the longitudinal axis of the handlebars and selectively locked for homolateral and contralateral operation of the climbing exercise apparatus.