A device including a first member for supporting a user; and a second member 14, attached to the first member, including a counterbalance portion. The first member and the second member are each moveable, and operable to slide with respect to each other in opposite directions, between a first position and a second position. The device can be operable such that between the first and second positions, the combined center of mass of the device 10 and its user remains substantially fixed. This serves to reduce the extent of forces and vibrations generated by use of the device on the object to which the device is located.

A exercise roller device including a center roller portion provided with shaped end roller portions, and the center roller portion provided with a centered circumferential groove. A method of making the exercise roller device.

A training sled apparatus, comprising: a platform with a rear edge and a wedge shaped front edge, opposite the rear edge of the platform; and, at least one sleeve provided to the platform and configured for placing a training component therein.

An exercise device that exercises both flexor and extensor muscles is provided. The exercise device includes a base having a front end, a rear end, a first side and a second side. Protruding from the rear end of the base is an anchor bar. The anchor bar may be substantially perpendicular to the base. An overhead handle bar may be pivotally connected to the top of the anchor bar by a pivot point. A stationary fulcrum may be secured to opposing sides of the base. A rotating rod is secured to the stationary fulcrum and rotates about a horizontal axis running through the rotating rod and the fulcrum. A slant board is supported by and pivots about the rotating rod.

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. The rehabilitation board has a plurality of band retaining feature configured along one or both ends and may be an integral band retaining features being formed in the board. Additionally, the rehabilitation may include one or more band retaining features on one or both sides of the board. The unique configuration of the band retaining features enables rehabilitation method heretofore not possible with a single board. Resistance bands may be retained in the band retaining features and coupled to a user's limb, such as a foot or ankle, to resist motion, such as sliding or extending the foot along the low friction surface of the rehabilitation board.

A selectorized dumbbell includes a horizontal stack of nested left weight plates and a horizontal stack of spaced right weight plates with the stacks being separated by a gap into which a handle may be inserted. A selector is movable into different positions relative to the handle to vary how many nested left and right weight plates from the stacks thereof are coupled to the handle to vary the exercise mass of the handle. Each left weight plate has a counterpart right weight plate counterpart which are coupled together by at least one interconnecting member having a first keyhole slot connection between the left end of the interconnecting member and the left weight plate and a second keyhole slot connection between the right end of the interconnecting member and the right weight plate.

A towing equipment used to train athletes' speed, strength and agility is disclosed to include a training unit, a magnetic resistance unit and a transmission mechanism. By an elastic training belt of the training unit, the towing equipment is connected to the human body. The kinetic energy generated by the human body pulling the elastic training belt is transmitted to the magnetic resistance unit through the transmission mechanism to generate resistance. The magnetic resistance unit includes a magnetic device set and an adjustment device set. The user can adjust the resistance generated by the magnetic device set through the adjustment device set. The magnetic device set includes a resistance wheel set on the frame body and a bearing block set corresponding to the resistance wheel. Use the overlap area of a magnetic field in the resistance wheel and the bearing block to generate magnetic flux.

A fitness slider is provided that is capable of holding a weight plate during use, to be manipulated by one or more extremities using the weight plate as the engagement surface for the user's hand or foot. Another fitness slider is configured to mate with different sizes of weight plates. Yet another fitness slider is provided that includes a handle on top of the weight plate as the engagement surface.

A flexible weight sled includes a main body member made from a flexible material, such as a nylon webbing, canvas, or the like. The main body member includes a weight strap that is used to attach one or more weights to the main body member in a removable manner. A upper body pulling strap is attached to the front portion of the main body member, and in a preferred embodiment, the upper body pulling strap includes a pair of handles on a distal end thereof. The weight sled may be folded or rolled up for purposes of storage and/or transport.

A holding device for using gym equipment for the purpose of muscle building training. The holding device has a handle part and a bracket, and the hand of a person using the holding device can be inserted between the handle part and the bracket. The hand side of the handle part is convexly curved with the exception of local depressions and/or perforations, and parts for releasably securing a dumbbell plate can be releasably secured to the lower face of the handle part. The hand side of the handle part has four groove-shaped depressions which are dimensioned and spaced from one another such when using the holding device as intended with a hand placed on the hand side, each finger is positioned in a respective depression of the groove-shaped depressions with the exception of the thumb.