BIOMECHANICAL STUDY ON THE 100-METER FLY RECOVERY PHASE TECHIQUES

Abstract

PURPOSE The authors analysed the force change coming from the supporting leg and the angle changes of the supporting leg in the 100-meter dash recovery phase. \ RESULTS In the recovery phase, the supporting leg applies force to the track, the track gives the reaction at the same time to push the body's center of mass to accelerate, including: the body's center of mass is in vertical and horizontal acceleration. Soon afterwards, it is in vertical inertia and in horizontal acceleration. At the get away moment, the supporting leg does not stretch fully, the cause is that if it continues stretching, the body's center of mass is in inertia motion. In the recovery phase, the body's center of mass is the lowest on the vertical line of supporting foot landing.