An interactive exercise system with apparatus and methods to optimize muscle strength for rehabilitation, to improve or maintain fitness, and to enhance the performance of athletes. The system uses an electronically controlled linear actuator to generate resistance against the muscular force exerted by the user. The system includes sensors configured to detect acceleration, speed, velocity, position, direction of movement, duration, and the force applied by the user. A control system preferably continuously monitors the sensors, and instantaneously adjusts the adaptive actuator. This provides a proportional counterforce to the user force throughout the entire range-of-motion. A display panel allows the user to interact with the system in real-time. The objective of the user is to synchronize the exercise performance with a selected target goal, by correlating the user's movement relative to a position on a display panel.

The embodiments herein provide a portable hamstring stretcher for stretching hamstring muscles and inner thigh muscles. The portable hamstring stretcher comprises a primary board, a secondary board (leg pieces), a plurality of hinges, a chain, a plurality of ratchet straps, a ratchet, a plurality of hinges, and a plurality of adjustable straps. A user lies down on the primary board and wraps his legs using the adjustable straps on the secondary board to exercise the hamstring muscles.

A low friction rehabilitation board having an integral band retaining feature is described. The rehabilitation board may have a coefficient of static friction of no more than about 0.5 and in some embodiments no more than about 0.06. A non-slip material may be attached to the bottom surface of the rehabilitation board. A band retaining feature is described as being integral to the rehabilitation board such that it is attached to the board, or may be fastened to the board. Additionally, in some embodiments, the board comprises range markings for the determination of the degree or amount of exertion or extension. Furthermore, the range markings may be calibrated to specific resistance band types. In other embodiments, the rehabilitation board may be configured with interlocking features to provide a modular option for combining boards when more extension is required.

An exercise machine which allows for a wide range of exercises while maintaining improved balance and control for the exerciser. The exercise machine generally includes a frame having a first track, a carriage movably connected to the first track, a first platform and a second platform connected to the frame, a first stationary handle extending upwardly from the upper surface of the first platform, and a second stationary handle extending upwardly from the upper surface of the first platform.

A method for use with a physical training device is provided. The device including an elastic resistance strap having first and second handles. The method includes pulling at least one of the first and second handles to generate force on a target muscle group through resistance training. The method also includes pulling the at least one of the first and second handles to generate anaerobic and aerobic muscle activity within the target muscle group through cardiovascular interval training.

A portable exercise device that allows a person to do Pilates type exercises without using traditional, cumbersome equipment. The device uses a pair of wheel assemblies each attached to each end of a central shaft. The shaft height can be adjusted from the center of each wheel to a lower point closer to the ground. Adjustable cam lockable hand/foot plates are attached to the shaft allowing the user to attach his or her feet to the shaft. Each hand/foot plate assembly includes a rotational plate that allows the hand/foot plate to be positioned at various angles in relation to the shaft. Resistance bands are attached on one side to the shaft and on the opposite side to a resistance source. The resistance source can be the user's own hands or feet, or a retaining strap attached to the lower portion of a door or wall.

An exerciser comprises a first block, a second block, a first torque member, a second torque member, and a damper assembly. The first block has an axle pivotally coupling with the second block. The first torque member is arranged at a first position or a second position of the first block. The second torque member is arranged at a first position and a second position of the second block. The damper assembly couples with the first block and a second block. The forces exerted on the first torque member and the second torque member will increase or decrease the distance between the first torque member and the second torque member.

A pelvis exercising system including: a movable seat, sized and shaped to support a user by his pelvis; a vertical supporter which supports the seat above the ground; a flexible connector mounted between the vertical supporter and the seat; wherein, the seat comprises a front portion and a rear portion extending upwardly away from a central arch, each of the rear and front portions comprises a length which is long enough to support a front portion and rear portion of the user's pelvis, while not significantly restricting the abdomen and lower back from bending in relation to a sagittal plane of the seat. A sensor positioned to measure movement of said seat relative to a base, wherein the sensor provides measured values of the seat relative to the base to a processor; and the processor controls a device based on the measured values. Related apparatus and methods are also described.

A portable multi-exercise device includes a pair of parallel tracks each being elongate and linear. The exercise device includes a pair of band attachment platforms positioned across the parallel tracks respectively proximate to ends of the parallel tracks, the band attachment platforms having at least two laterally spaced apart resistance band attachment structures and themselves being laterally positioned along the parallel tracks. Each band attachment platform may include a set of three spaced apart planks defining a slot therebetween in which band fasteners are positioned. The exercise device includes a pair of step platforms atop which a user stands when grasping resistance bands during exercise, the step platforms being laterally adjustable along the parallel tracks. The exercise device includes a rowing bar coupled to the pair of parallel tracks intermediate the band attachment platforms and having fasteners for attachment to the resistance bands.

A device allows user to train inner and outer thigh muscle group in standing position on a flat ground is provided. The device comprises two pivotal members that are connected through a mechanical system that governs the motion of the said pair of pivotal members. The device includes wheel systems which is mounted on each pivotal member and a mechanical system that governs the said wheel system during exercise. The device has a spring member that attached to said pivotal member for assisting the user doing the inner and outer thigh exercises. The device can have a string member that attached to the said pivotal member for adjusting the user's movement range during exercise.