No abstract

The purpose is to study effect of sole on force on feet as an additional factor when human body actively falls at different heights. Methods: 12 male subjects respectively wore three pairs of shoes with different cushioning performances and fell actively at the heights 20cm, 40cm and 60cm. Ground reaction force, pressure distribution on feet, and angle of ankle motion during impact from falling were acquired and analyzed synchronously. Results: Compared with ordinary soles, softer soles can effectively reduce the peak impact force during the impact process, prolong the time interval between the first peak and the second peak of the impact force, and at the same time reduce the maximum and maximum intensity of pressure on the plant, increase the area where plant is in contact with sole, and reduce range of motion of ankle. Conclusions: In comparison with sports shoes with ordinary sole, wearing sports shoes with softer sole can effectively reduce intensity of plantar peak pressure, intensity of mean pressure, peak pressure, and play a good role in shock absorption. Therefore, the softer sole of sports shoes can effectively relieve the burden on the feet, enhance the comfort of the feet, and reduce the chance of sports injuries. 361