중학교 남자 투창선수들의 기록수준별 창던지기 동작의 운동학적 특성

2019 
The purpose of this study was to analyze the kinematic characteristics of javelin throw by record level in middle school male athletes. To accomplish these purpose, we filmed javelin throwing event in the 47th National Junior Sports Festival using two cameras, divided 16-athletes into two groups(higher rank group, lower rank group) by record level, and fulfilled 3-D motion analysis. To verify statistical significance between two groups by record level, t-test was conducted using SPSS 20(p<.05). As a result, higher rank group of 8 athletes showed higher values in release velocity, stride length, knee angle at release than lower rank group(p<.05). On the other hands, Attack angle and attitude angle of javelin was smaller(p<.05). In coefficient of variation, attack angle of javelin, javelin grip distance (release to foul line), vertical velocity change volume of center of gravity was higher values. After all, to develop record of middle school male athletes they should maintain consistency of movement and make lower attitude angle of javelin, make longer last stride length and extend knee angle maximally at support’s foot ground contact.
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