Abstract: An article of footwear having an upper, an outsole defining a ground engaging surface, and a sole disposed between the upper and the outsole. The sole includes an energy return system having a first rigid plate, a second rigid plate spaced a predetermined distance from the first rigid plate, and at least one separating element disposed therebetween to maintain the spacing between the plates.

Abstract: A canine training device protects a helper's hand and arm while training a dog to bite and hold the arm of a human. The canine training device includes a sleeve which fits over the helper's arm and is shaped to correspond to the shape of the helper's forearm and hand. A bite bar is secured to an exterior surface of the sleeve and has a substantially wedge-shaped cross-section. A cover is arranged over the sleeve and the bite bar for grasping by the dog. The training device also includes a separate upper arm guard which is secured to the arm of the helper and covers the upper arm from the shoulder to the elbow. The bite bar is preferably adjustable on the sleeve to achieve different presentation angles for different wearers. The training device provides improved comfort and improved responsiveness due to the contoured shape of the training device sleeve.

Abstract: An insert for a shoe sole is provided which includes a strip made of an elastic material disposed between an outer sole portion and an upper sole portion of the sole of a shoe. The strip extends from the outer heel area of the shoe to the border of the large toe area of the shoe. The strip forms a rocker bottom which cradles the first metatarsal head of the foot of the wearer. The roll point of the rocker bottom is disposed in a range of from the toe break of the wearer to approximately 2.5 centimeters behind the toe break of the wearer.