Abstract: Embodiments of an article of footwear may include a semi-rigid base having a size and shape corresponding to a foot of a user and configured to be coupled to the foot of the user; and a first spring and a second spring coupled to the semi-rigid base, each of the first spring and the second spring including a top portion coupled to the semi-rigid base; a torsion spring; and a bottom portion configured to interface with the ground, wherein the torsion spring couples the top portion to the bottom portion, and wherein each of the first spring and second spring is coupled to the semi-rigid base such that the torsion spring is disposed proximate a center portion of the semi-rigid base and the top portion and bottom portion of each of the first spring and second spring extend towards a respective front portion and rear portion of the semi-rigid base.

Abstract: An exercise device including a pair of hollow cylindrical rollers interconnected so as to be maintained in generally line rolling engagement whereby upon the rollers being rotated by the hand of the person the person's fingers, thumb and hand are exercised, and if squeezed more tightly during rotation, the rollers also impart exercise to the wrist and forearm.

Abstract: Apparatus for simultaneously producing dorsiflexion and plantarflexion in both lower legs and both feet of a person and including a pair of exercise shoes for receiving the feet of the person, each exercise shoe including a generally semi-circular base for engaging a support surface on which the exercise shoes rock, and ganging means such as a pair of ganging bars for ganging the exercise shoes together to cause the exercise shoes to be rocked forwardly together to simultaneously produce plantarflexion and to cause the exercise shoes to be rocked rearwardly together to simultaneously produce dorsiflexion.

Abstract: An improved exercise shoe including a generally semi-circular base for engaging a support surface on which the exercise shoe rocks with a range of rocking motion, the improvement providing the exercise shoe with a more limited range, particularly a variable more limited range of rocking motion. The more limited range of rocking motion includes a more limited range of forward rocking motion and a more limited range of rearward rocking motion, and particularly a variable more limited rearward range of rocking motion.

Abstract: An exercise shoe including a semi-circular base providing a semi-circular sole plate on which the exercise shoe rocks. Attached to the base is a support which supports a heel support platform and a foot ball support platform. The semi-circular base and support have a generally diametrical axis and the heel support platform is inclined at an acute angle of 20.degree..+-.5.degree. with respect to the axis and the foot ball support platform is inclined at an acute angle of 30.degree..+-.5.degree. with respect to the axis. The user may employ two of such exercise shoes, one for each foot, then rocks back and forth on the shoes. The effect is to exercise, develop and toe the heel and toe flexors in the foot and calf muscles and the leg. Blood circulation to the lower leg is also stimulated.