Before the late 1970′s, running shoes were no high tech items. With rare exceptions, until the middle of the 19th century, shoes in general were made on a single straight last and there was not differentiation between the left and right foot. Up until the 1970′s, sneakers were all apart of one category of shoe. They all practically looked the same and could be used multidisciplinary among any sport. But as the jogging scene continued to grow, sneakers brands capitalized on the idea that people needed a different sneaker for every sporting occasion. Soon there were different sneakers for running, wrestling, track and field, tennis, basketball, etc were sold, allowing sneakers to carve out their own space in the global, athletic shoe industry. The 1970′s also saw for the first time technology, physiological science and shoe design coming together to create ergonomic shoes for athletes. Podiatrists first participated in the development of athletic shoe technology in the 1970′s as well. Podiatric medical practitioners commonly added wedges, arch supports, heel cradles and various cushioning devices to existing athletic footwear to treat and prevent injuries and enhance the wearer’s comfort.