作　　者： ; ; (裘艺）;

机构地区： 上海体育学院运动科学学院

出　　处： 《体育科学》 2006年第11期62-66,74,共6页

摘　　要： 采用双机同步二维摄像法对参加2005年全运会预选赛的12名男子优秀运动员在500 m单人艇比赛时的途中划过程进行了现场拍摄,并且运用自行研发并与摄像方法相适应的皮艇运动专项解析软件对所拍的图像资料进行解析。运用理论和统计学方法分析了途中划的划桨技术,拟揭示国内单人皮艇500 m优秀运动员途中划的技术动作的运动学特征,以期从理论和解析数据两方面探究提高途中划划桨效果的皮艇技术的改进方向。结论:双机同步二维摄像方法和专项分析系统使用效果良好;根据拉桨过程中桨获得推进力的主要来源,整个拉桨阶段可分为入水升力推进时相、阻力推进时相和出水升力推进时相;拉桨时艇速的变化特征是分析划桨效果的重要依据之一;随速度的提高,后拉划距减小;最大艇速出现时刻前移和速度下降率增大,阻力作用于艇和桨的相对时间延长;在出水升力推进时相,减小划桨的水平速度,加大垂直速度,加大出水角,将更有利于提高艇速和划桨效果。 By using the two-dimensional motion system of two synchronous cameras,this paper made video camera at site on twelve elite male athletes who participated in k-1 500m preliminary match of 2005 National Games and analyzed on it using the self-made special software. Through using the method of theoretical and statistical analysis ,the author analyzed the stroke technique on the midway and pointed out the kinematical characteristics of technical motion. The main purpose was to explore how to improve the stroke effect. It concluded that the special analysis system and two-dimensional motion system of two synchronous cameras works well,and pull phase is divided into propulsion phase of lift mode and resistance mode. It is found that along with the increasing kayak speed,the stroke distance in the back pull phase shortens and moves ahead to the time point of the most kayak speed and the rate of descending speed increases which prolong the duration of resistance action on kayak and oar. The kayak speed and stroke effect will be improved to decrease oar＇s horizontal kayak speed and increase oar＇s vertical kayak speed and increase oar＇s angle of parting water.

关 键 词： 皮艇 运动学分析 划桨 效果 专项技术

领　　域： [文化科学] [文化科学]