LAUSR

ABSTRACT In this study, we aimed to explore the correlation between movement coordination and sprint velocity and the mediating effects of stride length and frequency on this correlation. Thirty-two male college students (16 athletes and 16 non-athletes) participated in this study. Movement coordination was calculated using a vector coding method for intralimb (hip – knee, knee – ankle) and interlimb (hip – hip, knee – knee, ankle – ankle). There was a significant effect of group on hip – knee, hip – hip and ankle – ankle coupling angle during braking phase and knee – knee coupling angle during the propulsive phase. In all participants, the hip – hip coupling angle during the braking phase was positively correlated with sprint velocity, and the ankle – ankle coupling angle during the braking phase was negatively correlated with sprint velocity. Stride length mediated the relationship between hip – hip coupling angle and sprint velocity. In conclusion, the anti-phase of the hip – hip coupling angle and the swing phase of the ankle – ankle coupling angle may contribute to sprint velocity. Moreover, the correlation between hip – hip coupling angle and sprint velocity was related to stride length rather than stride frequency.