The development of aid to get rational movement for elementary school kids.

本研究的目的是探讨助跑对获得合理短跑动作的效果。研究对象为66名小学生(男：38，女：28)。为了获得合理的冲刺动作，辅助物被切碎，固定在带哨子的大腿凉鞋上。实验方案如下：第一、三班测量50m跑速度，第二班进行程序练习，辅助获得合理的短跑动作。主要研究结果如下：1)在30m-40m的短跑速度和步频上，“前”显著高于“后”。2)摆动腿膝关节屈曲角度“前”与“后”无显著差异。但受试者在“前”时膝关节屈曲角度较大，有减小的趋势。这些结果表明，本研究开发的辅助工具是获得合理的短跑动作的有效辅助工具。

The purpose of this study was to investigate the effect of aid to get a rational sprinting movement. The subjects were elementary school kids 66 (boy : 38, girl : 28). The aid to get a rational sprinting movement is chopped to fix to the thigh sandal with whistle for children. The experimental protocol was follow ; at first class and third class 50m sprinting speed was measured and at second class we were practiced the program used aid to get a rational sprinting movement. Main results were follows ; 1) in the sprinting velocity and step frequency at 30m-40m "pre" is higher than "post" significantly. 2) there was not significantly difference between "pre" and "post" in knee joint flexion angle at swing leg. But subjects show bigger knee joint flexion angle at "pre" tend to become small. These results suggest that the aid developed by this study is effective aid to get rational sprinting movement.