An isometric, dynamic isotonic concentric and dynamic isotonic eccentric motorized guidance exercise apparatus for human muscle development is provided. The exercise apparatus comprises a frame, an electric motor, the electric motor including an output shaft and secured to the frame, a drive guidance assembly, the drive guidance assembly secured to the frame and connected to the output shaft; at least one tactile feedback interface member, the at least one tactile feedback interface member secured to the drive guidance assembly; a weight plate, the weight plate secured to a limb of the human body, the limb positioned at the at least one tactile feedback interface member and wherein energizing the electric motor actuates the drive guidance assembly, the drive guidance assembly induces a motion in the at least one tactile feedback interface member, the limb engages the at least one tactile feedback interface member and the limb actuates the weight plate.

A method for controlling a training machine is provided. Data of the force applied to a reciprocation means of the training machine by a user with the reciprocation means being locked as the reference force in the forward direction is obtained, and the forward load opposed to the force in the forward direction applied by the user and the backward load opposed to the force in the backward direction applied by the user are determined. Also, a load more than the reference force is applied to the reciprocation means as a backward load opposed to force in the backward direction applied by the user when the user applies force to the reciprocation means in the backward direction of the reciprocation means. As such, a relatively large load can be applied to the user when the user contracts or stretches the muscles to work out.

A treadmill which utilizes provides for a connection between the floor stand and the treadbase which is toward the front end of the treadbase and provides for generally improved support of the front end of the treadbase at higher angles by providing that the lift mechanism is attached to the treadbase at two fixed points a fixed distance from each other. The lift mechanism then utilizes two different motions, the extension of an extension arm and the rotation of a rigid arm, to produce lift. The rotation of the rigid arm generally utilizes a wheel in an enclosed raceway attached to the floor stand.

An adjustable exercise machine for performing resistance exercises comprises a base and an upper frame including front and back end stationary exercise platforms, and a movable exercise platform that reciprocates between the stationary platforms. A plurality of biasing members is selectable by an exerciser via selector knobs to generate a bias force against the movable platform. A plurality of pivotable lift supports are connected between the base and the upper frame. Front and back actuators are connected between the base and the lift supports by lifting yokes to selectively raise and lower the front and back ends of the machine. The movable platform may be connected to move along the exercise machine by trolley wheel assemblies. A plurality of travel limit decelerators mounted on the rails engage and rapidly decelerates the movable platform as it reaches its limits of travel on the rails.

An exercise machine resistance adjustment system for providing an exerciser the ability to immediately adjust the resistance force by changing their body position on the movable carriage or end platforms. The exercise machine resistance adjustment system generally includes a frame, a carriage movably positioned on the frame, a spring connected to the carriage to apply a biasing force to the carriage, one or more left projections within the carriage adapted for a left hand of an exerciser to grasp, and one or more right projections within the carriage adapted for a right hand of an exerciser to grasp. The exerciser is able to efficiently adjust the amount of resistance force applied to the carriage by repositioning their hands (or feet) from a first set of projections at a first distance to a second set of projections at a second distance from the first end of the exercise machine.

An apparatus (100) for back improvement and lower-back pain and knees relieving, the apparatus comprising for each foot of a user, including a pedal (40) shiftable along a linear axis, for allowing a foot of the user to exert force on the pedal (40), a sensor (18), for continuously sensing a force exerted on the pedal (40) by the foot, a mechanism for exerting resistance force on the pedal, and a controller (10) for reading a sensing of the sensor, the controller being adapted to instruct the mechanism to exert continuous resistance force on the pedal such that the pedal submits to the foot.

An exercise machine has a main frame and a user support movably mounted relative to the main frame for movement between a start position and an end position during an exercise. At least one user engagement device is movably mounted relative to the main frame for engagement and actuation by a user during an exercise, and a connecting linkage translates movement of the user engagement device to movement of the user support. A lifting arm is movably mounted relative to the main frame and associated with at least one of the user support, user engagement device, and connecting linkage so as to move during an exercise. A load associated with the lifting arm provides exercise resistance.

An exercise machine support system for providing increased versatility including inclination or declination of an exercise surface, a reduction in the overall length and width of the exercise machine, and an enhanced user interface which reduces the risk of injury. The exercise machine support system generally includes a cantilevered exercise machine which is adapted to have a variable angle of incline or decline with respect to a horizontal ground surface. The exercise machine will generally include a base and a support which extends between the base and the exercise machine. The upper end of the support is connected to the exercise machine by a first pivot such that the exercise machine pivots about the support. An adjustment device may be utilized to pivot the exercise machine and thus adjust its angle of incline. Various types of adjustment devices are disclosed, including an actuator, ratchet-and-pawl, gears, and cam.

An exercise machine can include a frame, one or more platform arms that can be driven by a motor or a hydraulic system, and one or more handle arms that can be grasped by the user's hands. The exercise machine can guide the user through movement that actively flexes and extends portions of a user's body while the user exercises to provide, for example, dynamic stretching and cardio benefits while achieving strength training.

A treadmill contains: a body, a support assembly, a resistance unit, and a stop strap. The body includes a holder and a circular running belt. The support assembly includes multiple posts and two columns. The respective column has a slidable space, and the slidable space has two first chutes. A resistance unit includes two sliding devices, two limitation structures, and a force exerting element. The respective sliding device has a slider and multiple first rollers. The respective limitation structure includes two cylinder units, a resilient unit, a first fixing unit, and a second fixing unit. The force exerting element has two connection rods connected on two ends thereof, and the respective connection rod of the force exerting element is coupled with the coupling portion of the slider of the respective sliding device.