Athletic shoes are specifically designed to be worn for participating in various sports. Since friction between the foot and the ground is an important force in most sports, modern athletic shoes are designed to maximize this force, and materials, such as rubber, are used. Although, for some activities such as dancing or bowling, sliding is desirable, so shoes designed for these activities often have lower coefficients of friction. The earliest athletic shoes date back to the mid 19th century were track spikes — leather shoes with metal cleats on the soles to provide increased friction during running. They were developed by J.W. Foster & Sons, which later become known as Reebok. By the end of the 19th century, Spalding also manufactured these shoes as well. Adidas started selling shoes with track spikes in them for running and soccer in 1925. Spikes were eventually added to shoes for baseball and American football in the 20th century.Golfers also use shoes with small metal spikes on their soles to prevent slipping during their swing.
The earliest rubber-soled athletic shoes date back to 1876 in the United Kingdom, when the New Liverpool Rubber Company made plimsolls, or sandshoes, designed for the sport of croquet. Similar rubber-soled shoes were made in 1892 in the United States by Humphrey O'Sullivan, based on Charles Goodyear's technology. The United States Rubber Company was founded the same year and produced rubber-soled and heeled shoes under a variety of brand names, which were later consolidated in 1916 under the name, Keds. These shoes became known as, "sneakers", because the rubber sole allowed the wearer to sneak up on another person. In 1964, the founding of Nike by Phil Knight and Bill Bowerman of the University of Oregon introduced many new improvements common in modern running shoes, such as rubber waffle soles, breathable nylon uppers, and cushioning in the mid-sole and heel. During the 1970s, the expertise of podiatrists also became important in athletic shoe design, to implement new design features based on how feet reacted to specific actions, such as running, jumping, or side-to-side movement. Athletic shoes for women were also designed for their specific physiological differences.
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