Abstract
The purpose of this study was to clarify a technical element of hurdling motion that is necessary to keep 3 steps running in the consecutive interval. For the upper-grade of the elementary school that a technical element is located in the content of the study of the hurdle running in the course of study, the difference of the hurdling motion in 2nd hurdle of 18 children who were able to run 3 steps in both the 1st and the 2nd interval and 10 children who were not able to run 3 steps in the 2nd interval though it was possible to run 3 steps in the 1st interval was examined.
As a result, to keep 3 steps running in the consecutive interval, it was clarified that the following five technical elements were important.
1) Shorten the take off time.
2) Reduce the take off angle.
3) Reduce the deceleration rate from the take off phase to the air phase.
4) Land at a position not too near the hurdle.
5) Enlarge the stride of the 1st step after the landing.
Moreover, the result of analyzing the hurdling motion according to the time series, it was suggested that shifting to the air phase at a small angle from the take off phase that appeared first in the hurdling phase be able to decide to run 3 steps in the interval after the clearance of the hurdle.
