Influence of foot posture focused racing shoes on running motion

To enhance running performance of elite runners development of lightweight shoes, resilient midsole cushioning materials, and high bending stiffness midsole plate are in progress (Hoogkamer et al., 2017). In addition to these factors, we focused on forefoot strike pattern (FFS) and midfoot strike pattern (MFS). We hypothesized that FFS and MFS could use Stretch-Shortening Cycle, which has been suggested as an element to enhance running performance (Paavolaien et al., 1985). FFS and MFS can take advantage of the spring-like behavior of the muscles and tendons, but eccentric contraction of the triceps surae (TS) placing strain on the muscle.