Importance

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Abstract

A shoe employing negative toe rocker is disclosed which enhances athletic performance in sports which are foot-muscle intensive. The negative toe rocker in the shoe is induced by a structurally resilient inner sole preformed to place the sole of the shoe in a preloaded condition arcuately downward from the heel to the toe. An upper having staggered instep lacing and cutouts containing elastic web to evenly distribute and maintain the closure tension of the shoe, and heel engaging pads located on the inner surface of the medial and lateral portions of the heel of the upper constrain the foot of the wearer in the shoe. The downwardly preloaded sole provides mechanical advantage to the wearer in sports requiring significant muscle strength in the foot. Conversion of kinetic energy into potential energy by flattening of the preloaded sole and structural rigidity of the sole in static conditions transferring load from foot muscles to the stronger calf muscles enhances athletic performance.

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First Claim