DYNAMICS OF SUPPORT HIP JOINT DURING MAXIMAL VELOCITY SPRINTING

Abstract

The purpose of this study was to investigate the relationship between lower trunk motion and the support leg hip joint torque by three-dimensional (3D) analysis. Eight male sprinters ran 60-m with maximal effort from a standing position. Kinematic and kinetic data at the maximal speed phase were obtained with a 3D motion analysis system (250Hz) and force platform (1000Hz). As a result, there was a marginally significant negative correlation (r = -0.70, p = 0.051) between a running velocity and the peak backward angular acceleration of the support-side lower trunk during terminal support phase. It seems to be necessary for diminishing the backward angular acceleration to exert a large support hip adductor torque during the terminal support phase. These findings might be useful to improve maximal running velocity.