The purposes of this study were to develop an assistant tool to acquiring an effective sprinting movement in children and to examine the effectiveness of this tool. The study participants were 66 6th grade elementary school children. We planned three class hours for acquiring the sprinting movement: pre-test at the first class, practice at the second class and post-test at the third class.
The main results were as follows;
1) Sprinting speed, the 50 m sprint time. stride length and step frequency after practice were significantly improved than those before practice.
2) The lower group in the max thigh elevation angle in the pre-test increased the max thigh elevation angle from the pre-test to the post-test although the higher group in the max thigh elevation angle in the pre-test did not increase.
3) The higher group in the max knee flexion angle in the pre-test decreased the max knee flexion angle from the pre-test to the post-test although the lower group in the max knee flexion angle in the pre-test did not decrease.
These results suggest that the assistant tool developed in this study is effective for improving the sprinting ability of elementary school children, being especially effective for children who have a relatively high knee flexion angle and those who have a relatively small thigh elevation angle.