CAJ | 학술논문

为了探寻伦敦奥运会女子400 m个人混合泳冠军叶诗文的夺冠原因，综合分析了400 m混合泳不同泳姿的分段时间、不同泳姿对游速的影响及各阶段的速度变化特征等，运用主成分分析法分析了400 m混合泳各分段成绩对最终成绩的不同贡献率，并对冠军叶诗文各分段成绩领先均值特征进行了探究。结果显示：合理的第1分段速度是运动员赢得比赛的基础，运动员“第1次加速”现象出现在第4段。主成分分析表明混合泳第4分段成绩对比赛成绩贡献率最高。研究说明，叶诗文超凡的冲刺能力是夺冠的关键因素，但其第4段“1加”现象不够突出，说明叶诗文成绩还有提升的空间。
위료탐심륜돈오운회녀자400 m개인혼합영관군협시문적탈관원인，종합분석료400 m혼합영불동영자적분단시간、불동영자대유속적영향급각계단적속도변화특정등，운용주성분분석법분석료400 m혼합영각분단성적대최종성적적불동공헌솔，병대관군협시문각분단성적령선균치특정진행료탐구。결과현시：합리적제1분단속도시운동원영득비새적기출，운동원“제1차가속”현상출현재제4단。주성분분석표명혼합영제4분단성적대비새성적공헌솔최고。연구설명，협시문초범적충자능력시탈관적관건인소，단기제4단“1가”현상불구돌출，설명협시문성적환유제승적공간。
In order to probe into the champion winning reasons of YE Shi-wen, the champion of the women’s 400m indi-vidual medley in the London Olympic Games, the authors comprehensively analyzed her section times of different strokes in the 400m individual medley, the effects of different strokes on swimming speed, and the characteristics of speed chang-ing in different sections etc, analyzed different rates of contribution to her game time by various section times in the 400m individual medley by applying main component analysis, studied the characteristics of champion YE Shi-wen’s various section times leading the average times, and revealed the following findings：a rational section 1 speed was the foundation for her to win the game;the sign of her“first time acceleration”occurred in section 4;main component analysis indicated that her section 4 time in the individual medley had the highest rate of contribution to her game time. The said findings in-dicated that YE Shi-wen’s extraordinary sprinting ability was the key factor for champion winning, but the sign of her“first time acceleration”in section 4 was not outstanding enough, meaning that her performance can be further improved.