Is dorsiflexion of the ankle effective in decreasing ground contact time and improving coordination during the high knee sprint drill? Based on our data, we have concluded that the dorsiflexion sprint drill was more effective in decreasing ground contact time than the traditional sprint drill, but was not more effective in improving coordination. However, we did find that there was a significant difference in the knee flexion angle between the sprint drills. Since the position of the trunk and thigh segments was very similar in both movements, we can conclude that the difference between the knee flexion angles contributed to less ground contact time in the dorsiflexion sprint drill. There was a greater degree of knee flexion in the dorsiflexion sprint drill as compared to the traditional sprint drill. The greater degree of knee flexion resulted in a longer swing phase and, as a result, shorter ground contact time. Stride frequency and duration of the cycle also had an influence on ground contact time. Hagy and Mann (1980) found that gait cycle duration (stride frequency) and ground contact time are interrelated and that with increased gait speed, the length of stance phase progressively decreased". As our results show, the dorsiflexion drill exhibited both greater speed (shorter duration) and shorter stance phase (less ground contact time) than did the traditional sprint drill cycle. The degree of knee flexion also effected the center of mass. In the dorsiflexion sprint drill, there was greater clockwise rotation of the lower leg which caused the center of mass to be further posterior to the trunk. The difference between the degrees of the knee flexion angles, however, did not play a role in improving coordination in either of the movements. We concluded that the similarity in position of the trunk and thigh segments between the dorsiflexion sprint drill and the traditional sprint drill resulted in the movements being similarly coordinated. Therefore, neither drill proved better at improving coordination than the other.