The disclosure teaches a novel exercise apparatus. This apparatus does not generate load momentum. The apparatus is based around a series elastic torque sensor and contains an intelligent servo drive with reduction gear to control a variable speed rotating motor shaft. The combination of the motor, gear reducer, spring, angle measurement sensors (position sensors), and intelligent motor controller is a series elastic actuator which is the basis for the exercise device. The exercise device also contains a load transfer mechanism adopted to provide an interface between an individual and the torque sensor. The apparatus allows for isokinetic, isometric, isotonic, and variable force modes of exercise without hardware configuration.

An exercise system that may be rail-less, frameless, and/or portable is described. The exercise system includes a carriage having a plurality of wheels and a stationary platform. The stationary platform is independent of and separate from the carriage, and the stationary platform is freestanding. At least one tension member having a first end is attached to the carriage and a second end is detachably attached to the platform such that the carriage is movable on a horizontal plane parallel to a ground surface while the stationary platform remains in a fixed position.

Methods and systems for controlling a force generator of an exercise apparatus are described wherein the method comprises determining or receiving angular positions of a rotatable axle of an exercise apparatus when a force is applied to a force receiving structure of the exercise apparatus, the rotatable axle being part of a mechanical power transmission system connecting the force receiving structure via the rotatable axis to a force generator which is controlled by a computer based on a kinematic model, the kinetic model representing equations of motion of the exercise the apparatus; determining or retrieving first geometrical scaling values associated with the angular positions and incorporating the first geometrical scaling values into the kinematic model to form a first modified kinematic model, the first geometrical scaling values being associated with a non- circular gear of a first predetermined non-circular geometry; and, determining applied force values for the angular positions, each applied force value representing a force that is applied to the force receiving structure; and, controlling the force generator based on first resistive force values to mimic an exercise apparatus comprising a mechanical power transmission system including the first non-circular gear, the first resistive force values being computed using the first modified kinematic model and the applied force values.

The disclosure discloses a strength training equipment. The strength training equipment includes a speed changing device, which includes a driving motor and a speed changer, wherein the speed changer outputs the output of the driving motor after speed reduction; a differential mechanism, which is provided with a first output shaft and a second output shaft and can convert the output after speed changing by the speed changer into asymmetric force to be output from the first output shaft and the second output shaft; and a take-up device, which includes two take-up boxes which are connected with the first output shaft and the second output shaft respectively.

A treadmill system includes a deck, an endless tread belt covering at least a portion of the deck, a position sensor that senses a position of a user when the user is on the tread belt, and a control module that adjusts a speed of the tread belt in response to an output of the position sensor.

A swing training apparatus includes an upper line from an upper assembly to a housing of a lower assembly. A first line extendable from the housing may be connected to a sporting implement. A second line extendable from the housing may be connected to the upper line. A first spool, second spool, lever, and pawl are located within the housing. The rotation of the first spool permits the extension of the first line. The pawl is biased to prevent the rotation of the first spool. Tension in the second line cause the rotation of the second spool, causing the lever to engage a portion on the pawl to disengage the pawl and permit extension of the first line. The first and second spools, lever, and pawl are configured to permit the extension of the first line at the proper “release” point during the swing of a sporting implement.

An exercise system includes a bench system usable in combination with a resistance unit for the performance of a wide variety of exercises including those previously performed using free weights, exercise machines, rowing machines, and/or ski machines. The bench system preferably includes a bench unit, which is configurable in various bench configurations including flat, seated, incline and decline configurations as well as a sliding seat configuration. The bench system can include an extension unit mounted to the bench unit, wherein a resistance unit is mountable to the exercise system in a plurality of mounting positions that align with various bench configurations to permit the performance of a wide variety of resistance exercises while varying the angle of resistance generated by the pull cord on the body party being exercised. The mounting positions optimize the location of the resistance unit and the pull cords depending upon the bench configuration to vary and optimize the angle of resistance applied to the user’s muscles and body parts during exercises.

An exercise apparatus includes a rope wrapped around a spindle having a one-way clutch rotatably mounted on a driveshaft. The driveshaft is driven by a motor controlled by a motor controller. The controller is capable of driving and braking the motor such that the driving torque and the braking torque can be set at different values to ensure the safety of the apparatus and user.

A system and method for a fly wheel resistance workout system are provided. One embodiment includes a plurality of braces secured into at least one of a floor surface and a wall surface, wherein each one of the plurality of braces on the floor surface or the wall surface are located at predefined locations on the floor surface and the wall surface; a removeable anchor that can be releasably secured to one of the plurality of braces such that the removeable anchor is secured to a floor surface or a wall surface at a location of interest; a grab bar that is grasped by a user during an exercise motion; a fly wheel resistance device that opposes the exercise motion made by the user; and a strap with an end that is coupled to the fly wheel resistance device and with an end that is coupled the grab bar.

A system and method of using an exercise system having a resistance structure of handles connected to cables, which cables are connected to at least one pneumatic cylinder that creates resistance, wherein the resistance is adjusted by the user via actuators in the handles, so that the user does not need to release the handles to adjust the resistance. The system is typically supported by a frame to surround the user, and the pneumatic cylinder may be connected to an equalizing tank that may be housed within or integrated into the frame. The system may include a monitor to visually display system parameters and other information to the user. The system may calculate resistance and work done by the user by measuring piston displacement and speed, as well as using accelerometers or other devices integrated into the handles.