Abstract: A sliding exercise apparatus which in some embodiments may include a hard layer frame which may comprise a hard surface; a body contacting layer which may comprise a body contacting surface located opposite to said hard surface and which may be coupled to the hard layer frame opposite to the hard surface; and a removable cover which may be configured to cover a portion of the hard surface. A method of providing flexion and extension exercise to a joint using the sliding exercise apparatus is also provided. The method may include moving an appendage of a user that is in communication with an appendage joint in flexion motion and/or extension motion under a level of frictional resistance by moving the appendage and apparatus across a resistive surface.

Abstract: In preferred embodiments, a sliding exercise apparatus comprises: a hard layer frame comprising a hard surface; and a soft layer comprising a soft surface located opposite to the hard surface and located within the body of the hard layer frame. The apparatus may be inverted from a first orientation in which the hard surface is configured to make contact with the ground to a second orientation in which the soft surface is configured to make contact with the ground. The soft surface may comprise a fabric material, and the hard surface may comprise substantially rigid material with a planar ground contacting region and with a smooth finish. The hard layer may comprise a beveled edge that curves away from the hard surface towards the soft surface with the beveled edge extending to slightly below the soft surface.

Abstract: A sliding exercise apparatus which in some embodiments may include a hard layer frame which may comprise a hard surface; a body contacting layer which may comprise a body contacting surface located opposite to said hard surface and which may be coupled to the hard layer frame opposite to the hard surface; and a removable cover which may be configured to cover a portion of the hard surface. The hard surface may be configured to make contact with the ground such as when the removable cover is removed from covering the hard surface, and the removable cover may be configured to make contact with the ground when the removable cover is positioned over a portion of the hard surface. In further embodiments, the removable cover may be stretched over the hard surface to removably couple the removable cover to the hard layer frame.