THE INFLUENCE OF DIFFERENT STRIKE PAITERNS ON ENERGY CONTIBUTION DURING RUNNING

Abstract

Purpose: The purpose of this study was to determine the differences of joint power and work between forefoot strike (FFS) and rear-foot strike (RFS) during the stance phase of running. Methods: A 10-camera Vicon system and two force plates were used to collect the kinematics and kinetics data of 15 healthy male triathletes with different foot strike strategies during running. Results: The joint power and positive work at hip and ankle were increased in FFS during the stance phase. FFS also showed decreased knee negative work. Conclusion: Running with FFS would consume more energy than running with RFS at the same speed. The lack of ankle pint shock absorption in RFS might cause higher injury risk in knee.