Abstract: Actuator (140) for providing intermittent movement to a member (151). The actuator (140) has actuator cushion members (150) which extend with the entry of air and which contract with the egress of air provided through air supply lines (151, 152) connected to the actuator through a valve (172). The member (161) moved by the actuator cushion members (150) is located between the actuator cushion members (150). As one actuator cushion member (150) fills with air, force is applied to the member (161) thereby to provide movement force. Simultaneously, air exits from the opposite actuator cushion member (150) allowing the movement of the member to proceed. A control system (161) provides the cycle and frequency of the air application to the actuator (140).

Abstract: A reusable ankle brace for preventing lateral ankle sprains. The brace is constructed from an ankle cuff and a foot piece, with three straps emanating from anchor points on the foot piece for engagement with the ankle cuff. A first strap extends across from the heel end of the lateral side of the foot and across the front of the ankle, and is secured to the ankle cuff at the anteriomedial aspect. A second strap extends from the outside arch side portion of the foot vertically upward to a lateral side portion of the ankle cuff. A third strap is attached from the front end of the outside of the foot around the rear of the ankle and attaches on the posteriormedial aspect of the ankle cuff. The straps may be removably anchored on the ankle strap with hook and loop fasteners threaded through rings secured to the ankle cuff or removably anchored to the exterior counter portion of a shoe.