Abstract: A resilient sole for use in an article of footwear. The sole has controlled stiffness and manifests a slow shape recovery following compression by the plantar surface of the foot. A footwear construction using a sole with such characteristics improves stability of users of all age groups, while enhancing comfort.

Abstract: A device for connecting a cycling shoe to the crank arm of a bicycle which allows rapid changes in the shoe position relatively to the pedal pivot axis without the necessity of physically disconnecting the cycling shoe from the bicycle. The device comprises a first member for rotational connection to the crank arm about the pedal pivot axis and a second member for connection to the sole of a cycling shoe, the members being in a mutual engagement permitting transmission of pedalling efforts to the crank arm and also allowing a translatory motion of one member relatively to the other. A lock is provided between the members for normally blocking a translatory motion therebetween. The lock is releasable upon rotation of one member relatively to the other, whereby permitting longitudinal repositioning of the cycling shoe with respect to the pedal pivot axis.

Abstract: The present invention relates to a method and a device for preventing injuries resulting from overloading the plantar surface of an individual during an intense physical activity such as locomotion, jumping or the like. More specifically, the invention relates to a biofeedback interface to be interposed between the plantar surface and the ground surface. The biofeedback interface functions to substantially enhance the specific unpleasant sensations perceived by the individual during heavy plantar surface loading (locomotion and jumping) which are required to produce an enhanced protective behavioral response; the behavior avoids the unpleasant sensation, which in turn, decreases the loading with a reduction in the risk of physical injury.