A multi-function trainer is provided with a spring assembly and two handle assemblies respectively arranged at a left side and a right side of the spring assembly. The spring assembly includes a spring, and each handle assembly comprises a threaded part and a fitting part. The threaded part includes a shell, and a room is within the shell. The shell includes thread and the thread includes one or more cuttings. The thread can be screwed into one end of the spring. The fitting part is placed into the threaded part.

A locking device for an exercise system may include a locking member having a contact portion and configured to move between a first position and a second position. When in the first position, the contact portion of the locking member is not in contact with the resistance mechanism of the exercise system, thereby allowing movement of the at least one moveable assembly. When in the second position, the contact portion of the locking member is in contact with the resistance mechanism of the exercise system, thereby preventing movement of the at least one moveable assembly. The device may also include an electrical actuating device having an actuator for selectively engaging the locking device and moving the locking device between a first position and a second position.

Disclosed herein is a resistance exercise device and methods of using the same. In one embodiment, a resistance exercise device is disclosed comprising a quarter-wheel, a means for attaching resistance to said quarter-wheel, a support means attached to the axis of the quarter-wheel, whereby a user can perform core exercise while moving in a direction parallel to the line of resistance.

A multiple position locking handle for an exercise machine for that is movable into a plurality of different positions when unlocked and that is retained in a single secure position when locked. The multiple position locking handle for an exercise machine generally includes a tubular base having a lower end and an upper end, an elongated member extending through the opening of the upper end of the tubular base and extending downwardly through at least a portion of the tubular base, a handle extending outwardly from the elongated member at an angle, and a locking device. The elongated member is movable within the tubular base when the locking device is in the unlocked state and is substantially not movable within the tubular base when the locking device is in the locked state.

A manually powered treadmill includes a front rotatable element and a rear rotatable element coupled to a frame; a bearing assembly at least partially supporting one of the front or rear rotatable elements; and a running belt disposed about the front and rear rotatable elements. The bearing assembly includes a predefined low viscosity bearing fluid. The running belt defines a non-planar running surface. The running belt includes a first endless belt and a plurality of slats, each slat having a first side and a second side and coupled to the first endless belt. Each slat in the plurality of slats defines at least one aperture, and the at least one aperture is structured to receive a fastener to facilitate coupling to the first endless belt.

A multiple position locking handle for an exercise machine for that is movable into a plurality of different positions when unlocked and that is retained in a single secure position when locked. The multiple position locking handle for an exercise machine generally includes a tubular base having a lower end and an upper end, an elongated member extending through the opening of the upper end of the tubular base and extending downwardly through at least a portion of the tubular base, a handle extending outwardly from the elongated member at an angle, and a locking device. The elongated member is movable within the tubular base when the locking device is in the unlocked state and is substantially not movable within the tubular base when the locking device is in the locked state.

An exercise apparatus and method for rotational and vertical movement, the exercise apparatus including a base with a stabilizing foot extending substantially perpendicular to the lengthwise axis, further included is a support beam having proximal and distal end portions, wherein the proximal end extends from the base. Also included is a suspension handle that is disposed adjacent to the distal end and a pivotally attached platform attached to the base. Wherein operationally, on the exercise apparatus an individual standing on the platform can simultaneously grasp the suspension handle to initiate a whole body twisting motion via a pivotal movement of the platform situated as between the suspension handle and the pivoting platform with the ability to add a pull up exercise using the suspension handle, wherein the suspension handle provides added stability and support to the individual for effecting a soft skeletal joint vertical support that is variable at will.

A multiple position locking handle for an exercise machine for that is movable into a plurality of different positions when unlocked and that is retained in a single secure position when locked. The multiple position locking handle for an exercise machine generally includes a tubular base having a lower end and an upper end, an elongated member extending through the opening of the upper end of the tubular base and extending downwardly through at least a portion of the tubular base, a handle extending outwardly from the elongated member at an angle, and a locking device. The elongated member is movable within the tubular base when the locking device is in the unlocked state and is substantially not movable within the tubular base when the locking device is in the locked state.

A multiple position locking handle for an exercise machine for that is movable into a plurality of different positions when unlocked and that is retained in a single secure position when locked. The multiple position locking handle for an exercise machine generally includes a tubular base having a lower end and an upper end, an elongated member extending through the opening of the upper end of the tubular base and extending downwardly through at least a portion of the tubular base, a handle extending outwardly from the elongated member at an angle, and a locking device. The elongated member is movable within the tubular base when the locking device is in the unlocked state and is substantially not movable within the tubular base when the locking device is in the locked state.

An exercise device including an axial member, a rotating apparatus configured to rotate about the center axis including a surface interfacing member, a hub positioned around the axial member, and a plurality of spokes. The device further includes a variable resistance apparatus including a resistance member that exerts resistance to the rotation of the rotating apparatus, a user control device operable to change the magnitude of resistance exerted by the variable resistance member. The device further includes handle assemblies positioned on opposite sides of the hub.