A pad structure applied to a damping device and a racket frame or a racket frame with a through hole and a string includes a first slider having an end corresponding to the bottom of the damping device or the string or the racket frame and another end having a primary junction, a second slider installed to the other end of the first slider, and an end of the second slider having a secondary junction opposite to the primary junction, and the other end of the second slider being corresponding to the racket frame or the string; the first or second slider being in a trapezium shape and includes a lower level portion at a lower triangle of the first slider or a substrate portion at a lower triangle of the second slider.

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.

An apparatus for use in conjunction with a goal having a frame defining an opening is provided. The apparatus includes at least two movable blockers adapted to selectively define a target space within the opening. First and second blockers are perpendicular and mounted on portions of the frame. The first blocker has a pair of opposed horizontal first free edges defining a first free space between the first free edges and movable in a vertical direction to increase or decrease the first free space therebetween. The second blocker has a pair of opposed vertical second free edges defining a second free space between the second free edges and movable in a horizontal direction to increase or decrease the second free space therebetween. The first free space and the second free space define the target space.

Skipping rope with two handles connected by a rope. A handle is provided with winding devices for winding and unwinding the rope. The rope is movable in the handle between a position for adjusting the length of the skipping rope and a position for using the skipping rope. The handle is equipped with blocking devices for blocking and unblocking the rope.

Disclosed herein is an exercise machine that includes an elongated frame having a head end and a foot end, and a moveable carriage slidably coupled to the elongated frame and moveable between the head end and the foot end, the moveable carriage having a spring bracket coupled to an underside of the moveable carriage. The exercise machine also includes a spring support rod slideably coupled with the elongated frame and disposed adjacent the foot end, and selectively positionable with reference to the foot end by a handle that extends from an interior area of the elongated frame to an exterior area of the elongated frame. The exercise machine also includes at least one resistive member coupled at a first end with the spring support rod and at a second end with the spring bracket, and configured to bias the moveable carriage towards the foot end of the elongated frame.

An adjustable flexible device for use in training activities for stick-based sports. The device is comprised of a flexible material provided in a planar surface in a flattened and free state. The device includes a first end, a second end opposite the first end, and a slot located through the material and configured to securely receive the first end. In use, the device is wrapped into a cylindrical shape around the stick and secured in place via the slot and first end coupling. The device material properties provide that it is collapsible.

An adjustable climbing wall system enabling the arrangement of a force sensor with an attached climbing hold in various positions attached to a frame or wall. The system comprises a subframe element that is configured to a couple with a force plate. The subframe element is configured to be adjustable from a first position to a second position. The force plate is configured to couple with a climbing hold and the force sensor is configured to output a signal indicative of the forces applied to the climbing hold.

A device for training and rehabilitation of a limb is provided. The device provides a board with a plurality of movement tracks to allow for controlled movement of the limb in various directions. Blockers and other controlling structures may be arranged on the device to limit range of motion of the movement of the limb.

A kit has an elongate bar connectable to a cable of a pulley cable exercise machine, left hand grip, right hand grip, and a plurality of fasteners that make the left and right hand grips repeatedly, removably attachable to the bar. The bar has a plurality of elongate slots and a plurality of bores, each oriented transverse to a respective slot. Each of the left and right hand grips are freely rotatable in two dimensions and has a connector pivot shaped to be received in any of the slots with a second eyelet aligned with a respective one of the bores. When assembled, a fastener is received in the bore having the second eyelet of the left hand grip and in the bore having the second eyelet of the right hand grip. Each fastener defines a pivot point about which the respective hand grip pivots within the respective slot.

An extremity flexion and extension exerciser device is described. The device includes a joint supported by a base, a rotating arm mounted on the joint, the rotating arm including a first side extending from the joint in a first direction, and a second side extending from the joint in a second direction opposite the first direction, a handle or paddle attached to a distal end of the first side of the rotating arm, and one or more weights are selectively attachable to the second side of the rotating arm.