Abstract: Improvements in a foot exerciser are presented that provides variable resistance for foot extension and flexing. The improvements are presented with two varieties where a first variety is fit onto an existing shoe and a second variety that is a complete shoe with the resistance elements built into or on the shoe. The amount of resistance can be changed or varied based on the abilities of the athlete by changing the resistance material, length, number and or the attachment location of the resistance element on the shoe or foot exerciser. The Speed Doctor speed builder foot exerciser provide athletes with a simple and effective way to improve the strength, agility and jumping ability of their legs by wearing shoes that offer resistance and tension.

Abstract: Improvements in a foot exerciser are presented that provides variable resistance for foot extension and flexing. The improvements are presented with two varieties where a first variety is fit onto an existing shoe and a second variety that is a complete shoe with the resistance elements built into or on the shoe. The amount of resistance can be changed or varied based on the abilities of the athlete by changing the resistance material, length, number and or the attachment location of the resistance element on the shoe or foot exerciser. The Speed Doctor speed builder foot exerciser provide athletes with a simple and effective way to improve the strength, agility and jumping ability of their legs by wearing shoes that offer resistance and tension.