成都体育学院学报
成都體育學院學報
성도체육학원학보
Journal of Chengdu Physical Education Institute
2015年
3期
82~86
,共null页
郝凤霞 刘铮 刘平清 史东林
郝鳳霞 劉錚 劉平清 史東林
학봉하 류쟁 류평청 사동림
运动学 自由泳 质心 速度特征
運動學 自由泳 質心 速度特徵
운동학 자유영 질심 속도특정
kinematics; freestyle; centroid; velocity features
目的:描述游泳运动员在200m自由泳中,短周期内速度波动(Vfluc)的特征和变化,及身体质心速度的最大值(Vmax)和最小值(Vmin),并分析其与运动员运动表现的相关性。方法:选现役河北省游泳队国家一级以上自由泳男运动员共11名为研究对象。用4台水下和2台水上摄像机同步记录他们的游泳表现。将200m自游泳分为4段(每段50m:SCl、SC2、SC3、SCA)分析,采用椭圆区域的方法对人体数据进行计算。结果:测试发现,200m自游泳中Vmean总体在下降;Vmax和Vmin与运动员的表现呈正相关,且SCl段比另外三段的相关性更高;Vmax和Vmin的相关性显著且一致,但与游泳表现并无相关性。结论:各个方向速度波动特征与运动表现没有相关性,且在整个运动过程中也并不呈现显著性的变化。
目的:描述遊泳運動員在200m自由泳中,短週期內速度波動(Vfluc)的特徵和變化,及身體質心速度的最大值(Vmax)和最小值(Vmin),併分析其與運動員運動錶現的相關性。方法:選現役河北省遊泳隊國傢一級以上自由泳男運動員共11名為研究對象。用4檯水下和2檯水上攝像機同步記錄他們的遊泳錶現。將200m自遊泳分為4段(每段50m:SCl、SC2、SC3、SCA)分析,採用橢圓區域的方法對人體數據進行計算。結果:測試髮現,200m自遊泳中Vmean總體在下降;Vmax和Vmin與運動員的錶現呈正相關,且SCl段比另外三段的相關性更高;Vmax和Vmin的相關性顯著且一緻,但與遊泳錶現併無相關性。結論:各箇方嚮速度波動特徵與運動錶現沒有相關性,且在整箇運動過程中也併不呈現顯著性的變化。
목적:묘술유영운동원재200m자유영중,단주기내속도파동(Vfluc)적특정화변화,급신체질심속도적최대치(Vmax)화최소치(Vmin),병분석기여운동원운동표현적상관성。방법:선현역하북성유영대국가일급이상자유영남운동원공11명위연구대상。용4태수하화2태수상섭상궤동보기록타문적유영표현。장200m자유영분위4단(매단50m:SCl、SC2、SC3、SCA)분석,채용타원구역적방법대인체수거진행계산。결과:측시발현,200m자유영중Vmean총체재하강;Vmax화Vmin여운동원적표현정정상관,차SCl단비령외삼단적상관성경고;Vmax화Vmin적상관성현저차일치,단여유영표현병무상관성。결론:각개방향속도파동특정여운동표현몰유상관성,차재정개운동과정중야병불정현현저성적변화。
Objective : This study aims at describing the swimmers' features and changes of a short - cycle speed fluc- tuation in the 200m freestyle (Vfluc), and analyzing their correlation with the swimmers' performance. Meth- ods: 11 male swimmers in active service from Hubei are selected as the research subjects. 4 underwater and 2 overwater video cameras are used to synchronously record their swimming performance. The 200m freestyle swimming is divided into 4 segments ( SC1, SC2, SC3, SCA) and oval region method is adopted to calculate human body data. Results: the findings indicate an overall decline in the Vmean and a positive correlation be- tween the swimmers' Vmax/Vmin and their performance with the correlation of segment 1 much higher than the other three sections. Vmax and Vmin demonstrate significant correlation, but no correlation to the swimming performance. Conclusion: there is no correlation between the velocity fluctuation characteristics in all directions and performance with no significant changes during the whole process.