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The purposes of this study were to develop an approach to acquiring an effective sprinting technique in children and to examine the effectiveness of this approach. The study participants were 71 6th and 5th grade elementary school children. 33 5th grade children were new approach group, and 38 6th grade children were general approach group. We planned four units for practice of the sprinting technique: pre-practice measurement at the first class, practice at the second and third class and post-practice measurement at the fourth class. We compared new approach group and general approach group. The main results were as follows; 1) In new approach group, sprinting speed, stride length and step frequency over 30-40m after

practice were significantly better than those before practice. But in general approach group, there are no significant different between before and after practice.

2) In new approach group, velocity of C.G. at whole swing leg after practice was significantly larger than that before practice. But in general approach group, there is no significant different between before and after practice.

These results suggest that the approach developed in this study is effective for improving the sprinting ability of elementary school children, being especially effective for children.

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Pre 3.52 0.22Hz Post 3.75 0.31Hz Post Pret=-3.845 p 0.001 T Pre 3.59 0.36Hz Post 3.79

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Y Pre 1.50 0.15m Post 1.57 0.14m Post Pret=-4.115 p 0.001 T Pre 1.58 0.11m Post 1.56

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Y Pre 44.54 7.89deg Post 41.33 6.82deg Post Pret=2.325 p 0.05 T Pre 41.35 9.63deg

Post 44.73 10.89deg Post Pre t=-2.336 p 0.05

11 12 Y T Pre PostY Pre 60.08 5.40deg Post 64.34 4.79deg Post Pre

t=-4.958 p 0.0001 T Pre 61.50 5.77degPost 60.43 7.24deg

13 14 Y T Pre PostY Pre 8.02 0.67m/s Post 8.47 0.69m/s Post Pre

t=-4.908 p 0.0001 T Pre 8.85 0.64m/sPost 8.90 0.73m/s

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2001 103 149-155

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