In general, an exercise device includes a handle having a first end and a second end. A curved member is coupled to the first end of the handle. A movable member is coupled to the curved member, with the movable member configured to travel along a length of the curved member, where the movable member has a first portion and a second portion, and the second portion is configured to move relative to the first portion. An elongate member has a first end and a second end, and the first end of the elongate member is coupled to the second portion of the movable member. A weight is coupled to the second end of the elongate member.

Embodiments allow the application of a settable and/or a programmable resistance to a trainee's leg Drive Phase and/or Recovery Phase while walking or running over extended or infinite distances. Multiple mechanical or electrical feedback loops or combinations of both to monitor the applied resistance to the Trainee by the tether or tethers and then control the amount of breaking (drag) or propulsion created by the Mobile training module during the acceleration and constant speed training phases to accurately generate, control and transfer resistance through the elastic tethers to the Trainee. Embodiments apply multiple, non-varying loads or programmable loads to multiple body parts of a trainee where applied resistance can be manipulated to both increase or decrease over distance as desired by trainee while the trainee is walking, running or sprinting over any distance.

A unilateral leg press exercise machine is provided. This machine includes a base frame, which is engaged with the floor. The base frame includes bottom side supports, bottom front and back supports to provide stability to the machine. The base frame also includes two sliding carriages which hold resistance plate holders and move in a straight line at an angle of approximately 20 degrees to the floor. 2 resistance plate holders are attached to each moving carriage for a total of 4 and provide the desired weight resistance during the exercise. An adjustable back pad is provided to vary the angles to approximately 15 degrees from the horizontal floor. A set of adjustable shoulder pads on the seat hold the user in place as the back pad is lowered to angles that are closer to the horizontal position.

A rope exercise simulation device comprises a handle and an elongate housing with at least one internally located displaceable weight. The housing extends substantially orthogonally with respect to an axis of the handle and the at least one weight is arranged to move between the ends of the housing acting against one or more resiliently deformable means.

An exercise apparatus including a base, an arm assembly having first and second arms for engaging the outside of the legs of a human and a coupling assembly for securing the arm assembly to the base. The coupling assembly can include a pivot assembly for permitting the first and second arms to move between a contracted position and an extended position as the legs are pivoted away from each other. The first and second arms can be urged towards the contracted position. Methods for operating the exercise apparatus are provided.

A weight system having at least one weight stack moveable in a vertical direction on a lift rod, and a bearing block for housing a linear bearing. The invention further includes a method and apparatus for aligning the linear bearing.

A weight system having at least one weight stack moveable in a vertical direction on a lift rod, and a bearing block for housing a linear bearing. The invention further includes a method and apparatus for aligning the linear bearing.

An eccentric weightlifting machine that includes a first pole connected to a first weight and to a device acted on by a user, a second pole connected to a second weight and to a motor, wherein the motor lifts the second pole in response to movement of the first pole by the user, and a latch configured to latch the first pole to the second pole during an eccentric exercise portion of a weightlift.

An exercise apparatus including a vertical support, an arm assembly having first and second arms for engaging the outside of the legs of a human and a coupling assembly for securing the arm assembly to the vertical support. The coupling assembly can include a slide assembly for permitting the arm assembly to move vertically on the support element between an upper position and a lower position as the human moves downwardly relative to the vertical support and a pivot assembly for permitting the first and second arms to move between a contracted position and an extended position as the legs are pivoted away from each other. The first and second arms can be urged towards the contracted position. Methods for operating the exercise apparatus are provided.

An exercise machine in the form of a stationary rigid metal construction is provided, which includes a support frame having an axle. The axle is provided on the outer side of levers. The levers are pivotally mounted on the uprights of the support frame. Limiters for limiting the movement of a weight are in the form of transverse connections between the levers and are installed on both sides of the axle. A load guide is provided between the limiters and is in the form of a bent rod having two rectilinear portions and an arc. A limiter of lever position is in the form of a U-shaped frame and is affixed to the levers. A bench is mounted on the support frame.