摘要：Running is a prevalent physical activity in today’s health-conscious society. Over the course of a 1-mile run an individual will make approximately 1600 footstrikes. At the time of contact between foot and ground, impact forces and pronation place large stresses on the structures of the lower extremity. Exposure to repeated impact loading is linked to the development of runners’ injuries, including joint degeneration and osteoarthritis (Dekel and Weissman, 1978). Pronation increases the stress in joints, muscles and tendons and is also connected to runners’ injuries (James et al., 1978; Denoth, 1986; Stacoff et al., 1988). To prevent injury, running shoes are designed to reduce both impact forces and pronation. However, these innovations in shoe design might not benefit all runners.
