Abstract: A shoe sole having a resilient outsole including a weight for applying a larger-than-normal load on the leg muscles. The outsole has a single recess formed on the upper surface thereof and extending in a lengthwise direction from a toe portion to a heel portion of the outsole. The recess has an outline that is similar to the outline of the outsole and a single weight is embedded in the recess. The single weight comprises a mixture of a resilient material and metallic grains and has an outline that is similar to the outline of the outsole. The weight is formed so as to be relatively thin at the toe portion and relatively thick at the heel portion.

Abstract: A shoe sole has a resilient outsole including a weight for applying a larger-than-normal load to leg muscles. The outsole has a single recess bored on the upper surface thereof and extending in the lengthwise direction from a tow portion to a heel portion thereof. The recess has a similar outline to the outline of the outsole and a single weight is embedded in the recess. The single weight comprises a mixture of a resilient material and metallic grains and has a similar outline to the outline of the outsole. The weight is formed to be thin at the toe portion and thick at the heel portion.