Abstract: An exercise-bar is provided for use with flexible resistance bands. The exercise-bar includes a rigid elongated bar; and a pair of rotating resistance band sheaves respectively installed at the opposing axial ends of the rigid bar. Each band sheave includes: a rotor secured for free rotation to an axial end of the rigid elongated bar; a band-collar carried on a band-support portion of the rotor and having an axial width to accommodate at least a width of a flexible resistance band thereabout; and a slotted cover shell carried on the rotor. The slotted cover shell includes an open axial end and a semi-circumferential cover portion covering a corresponding semi-circumferential portion of the band-collar and an axial slot extending into an axial end of the semi-circumferential cover portion and extending along at least the axial width of the band-collar.

Abstract: A proprioceptor stimulation material includes a plurality of pyramid-shaped nodes that may be arranged to stimulate small nerve proprioceptors in a user. The plurality of nodes may be arranged in diamond-shaped patterns and may stimulate small nerves in a user. The material may provide a pattern and/or texture that may stabilize a user's balance. The material may also provide friction when pressure may be applied from the user on the plurality of pyramid-shaped nodes. The material and/or the plurality of pyramid-shaped nodes may provide a hardness that may activate a user's nerves. Further, the material may reflect and absorb vibration external to the material.