A chair for fitness exercise includes a base, a stretching mechanism, a backrest, an armrest, a footrest and a supporting cushion. The stretching mechanism includes a pull rod and an elastic connector. One end of the elastic connector is fixedly connected to the base, and the other end of the elastic connector is connected to the pull rod. The base includes a footrest rod, and one end of the elastic connector is fixedly connected to the footrest rod. The backrest includes a backrest rod. The armrest is connected to the base, and an elastic assembly is fixedly arranged on the armrest. The footrest includes two side supporting rods. The supporting cushion is arranged between two side supporting rods. The elastic assembly includes a connecting rod, a first limiting member, a second limiting member, a third limiting member, a front spring, a rear spring, a first sleeve and an engaged key.

An exercise machine adjustable resistance system and method for efficiently varying the workout resistance for an exercise machine. The exercise machine generally includes a carriage movably positioned with respect to the at least one rail, a plurality of springs selectively connectable to the carriage to provide a resistance level to the carriage, a plurality of electrically actuated mechanical devices adapted to latch a corresponding one of the plurality of springs to the carriage when in the latch state and unlatch a corresponding one of the plurality of springs to the carriage when in the unlatch state and a control unit in communication with the plurality of electrically actuated mechanical devices to selectively control the state of each of the plurality of electrically actuated mechanical devices to be within the latch state or the unlatch state.

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 abdominal exercise device includes a frame comprising top, middle, and bottom frame sections. The middle frame section has a curved shape for creating a teeter-totter movement during exercise. The device includes a headrest connected to the bottom frame section, a plurality of connectors for connecting elastic bands to the frame, and an elastic band connected to at least two connectors. The two ends of the elastic band are connected to two straps. The device creates the teeter-totter movement to exercise the abdominal muscles in response to a person lying down in supine position with the back of the head on the headrest and the feet in the two straps, the person applying a downward pressure with the feet to the straps to move the headrest from a resting position, and the person removing the downward pressure to allow the headrest to go back to the resting position.

Methods and devices for isolating muscle groups during exercise are provided. According to an aspect of the invention, a device includes a first strap that has a first loop shape, a second strap that has a second closed loop shape defining a fixed opening, and a third strap that has a third closed loop shape. A first portion of the first strap is affixed to or integral with the second strap, a second portion of the first strap is arranged to be movable within the fixed opening defined by the second closed loop shape, the second portion of the first strap is affixed to or integral with the third strap, and a first adjustable opening within the first loop shape is configured to be adjusted by changing a relative position of the second portion of the first strap and the fixed opening defined by the second closed loop shape.

Methods and devices for isolating muscle groups during exercise are provided. According to an aspect of the invention, a device includes a first strap that has a first loop shape, a second strap that has a second closed loop shape defining a fixed opening, and a third strap that has a third closed loop shape. A first portion of the first strap is affixed to or integral with the second strap, a second portion of the first strap is arranged to be movable within the fixed opening defined by the second closed loop shape, the second portion of the first strap is affixed to or integral with the third strap, and a first adjustable opening within the first loop shape is configured to be adjusted by changing a relative position of the second portion of the first strap and the fixed opening defined by the second closed loop shape.

This disclosure provides devices and methods for stretching that include an anchor configured to attached to a force providing element; a support, the anchor operably attached to the support; a plurality of finger traps operably attached to the support; and a wrist cuff operably attached to the support.

The present disclosure provides an exercise apparatus with a mobility mat and an orthopedic device. The mobility mat can have a plurality of segments with a plurality of assistive features such as hand holds, foot holds, and a contoured cushion. The mobility mat can be configured to couple with the orthopedic device. The orthopedic device can have an inclined face and a plurality of remaining faces including various additional assistive features.

The invention is directed to systems, devices, and methods for measuring force and repetitions during exercise or rehabilitation activities. Devices in accordance with embodiments may include: a casing; a processor within the casing; a display visibly on the casing; a first attachment portion on one end of the casing; a second attachment portion on an opposite end of the casing; and a force sensor connected to the first and the second attachment portion, the force sensor in communication with the processor. Methods may include: attaching a pneumatic exercise device to the wireless force measurement device; conducting exercises causing a piston in the pneumatic exercise device to move compared to from the wireless force measurement device; counting, by the device, the number of times the piston moves towards or away from the device; determining, by the device the amount of force applied through the pneumatic exercise device during the exercise.

A therapeutic exercise device for improving arm mobility and strength is provided. The device can be used by any person but is particularly helpful for infants who suffer from the disease of arthrogryposis. The device includes a base having a first upright leg member and a second upright leg member. The leg members are height-adjustable. The leg members are joined at their upper ends by an upper crossbar member. Preferably, a pair of elastic straps are coupled to the crossbar. The elastic straps can have handles so the infant can reach up and grasp them. The infant can pull downwardly on handles and move the straps. These exercises help infants to improve their strength, range of motion, and sensorimotor development.