THE EFFECTS OF STRIDE LENGTH AND FREQUENCY ON THE SPEEDS OF ELITE SPRINTERS IN 100 METER DASH

By adopting relative and factor analysis, this study elaborated on the relations and the main factors of the speed growth, the stride length and the stride frequency at each phase in the whole course of 100m dash. Using data from the study it demonstrated that stride length contributes much more to the course of 100m dash than the stride frequency. Furthermore, this study found that excessive accelerating in the fast striding after starting, which is related to the excessively high stride frequency, also affected the speed in a certain degree in the whole course of 100m dash. According to the relative and factor analysis, the study indicated that it is necessary to control the stride frequency and to increase the stride length while accelerating at the first 10m section in fast striding. This occurs in order to reduce or eliminate the negative influence caused by excessive accelerating in the fast striding after leaving the starting line.