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张良 《山东体育学院学报》2009,25(2)
采用三维录像解析、Person相关分析等方法,以2007年全国田径锦标赛女子铁饼比赛前8名运动员的投掷技术为研究对象,对女子铁饼运动员最后用力阶段速度变化与投掷成绩进行了相关性分析,结果显示:在最后用力的初始加速阶段以及最后用力的最后加速阶段存在着与投掷成绩密切相关的速度变化,并且,两个阶段某些环节速度变化的比值与投掷成绩也存在显著相关关系. 相似文献
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高校高水平男子标枪运动员投掷步最后用力运动学参数的比较研究 总被引：1，自引：0，他引：1
通过文献资料法查阅到我国部分高校高水平男子标枪运动员投掷步、最后用力两阶段的相关运动学参数，并与世界优秀标枪运动员有关运动学参数进行对比，发现高校高水平男子标枪运动员投掷步第1,第2步和交叉步以及右腿最后用力等方面存在一些问题，并对此进行分析与比较。 相似文献
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采用SIMI Motion3D运动图像解析系统对参加第12届全运会女子铅球前8名运动员的最后用力技术进行运动学研究,通过运动学的相关指标参数,分析第12届全运会女子铅球运动员的技术特点。结果表明:第12届全运会女子铅球运动员的最后用力准备加速阶段身体姿势规范,用力顺序合理,但制动效果不理想;在最后用力阶段,投掷臂能够维持在一个比较理想的位置,但铅球运行的距离较短,肌肉爆发用力不足。 相似文献
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投掷项目最后用力顺序探讨 总被引：2，自引：0，他引：2
通过对投掷项目最后用力阶段存在问题的分类认识,以及对最后用力阶段运动学特征、解剖学特点、运动环节间力量传递基本原理的深入分析,认为:对投掷最后用力顺序的认识,属于特定阶段用力顺序的认识,对其认识不能脱离该阶段技术自身的本质特征;投掷最后用力顺序是右侧腿的踝、膝、髋肌肉依次发力;用力顺序与力的传导顺序是一致的。 相似文献
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最后用力阶段非投掷臂摆动特征对铅球技术的影响 总被引：3，自引：0，他引：3
笔者通过影片拍摄与解析 ,对铅球运动员最后用力阶段非投掷臂的运动学特征分析 ,发现 :非投掷臂摆动的速度、轨迹和摆动时机 ,会直接引起部分身体环节的变化 ,乃至影响到铅球运动员正常技术发挥和投掷成绩。 相似文献
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对我国优秀标枪运动员投掷步技术的力学解析 总被引：6，自引：1，他引：5
通过对我国优秀标枪运动员投掷步与世界优秀选手投掷步躯干后倾角等运动生物力学参数的对比分析,发现我国标枪运动员在投掷步和最后用力技术上存在着一定的差距,这是影响运动员成绩提高与稳定的原因之一。为了提高我国标枪运动成绩,完善我国运动员投掷步技术是十分必要的。 相似文献
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采用高速摄影对高校高水平男子标枪运动员投掷步和最后用力两阶段进行定点拍摄获得相关运动学参数,同时根据世界优秀标枪运动员有关运动学参数进行对比分析.结果:投掷步获得的动量和扭转力矩缺位,导致"鞭打"、"满弓型"无法完成,投掷步第一、二步躯干角度小,交叉步后倾角度过大. 相似文献
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张良 《天津体育学院学报》2009,24(3):265-268
采用文献资料法、三维录像解析法以及数理统计等研究方法,以2007年全国田径锦标赛女子铁饼前8名的投掷技术为研究对象,对我国优秀女子铁饼运动员在掷铁饼最后用力阶段身体重心的时间、空间以及速度节奏进行了定量分析.同时采用Person相关分析对我国优秀女子铁饼运动员最后用力阶段身体重心的时间、空间以及速度的变化与投掷成绩进行了检验,提出了我国优秀女子铁饼运动员最后用力阶段身体重心节奏变化的量化指标. 相似文献
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Jorge R. Fernandez-Santos Jose Luis Gonzalez-Montesinos Jonatan R Ruiz David Jiménez-Pavón Jose Castro-Piñero 《Measurement in physical education and exercise science》2018,22(1):70-78
The purpose of this study was to analyze the kinematic variables that determine the performance of the standing long jump in children 6- to 12-years-old. There were 121 healthy children (58 girls) recorded while they performed the standing long jump test. All kinematic variables showed a significant correlation with calculated jump distance and measured jump distance, except for the knee joint angle at maximum shoulder extension angle, ankle joint angle at maximum shoulder extension angle, and shoulder joint angle at maximum knee flexion angle. Stepwise multiple regression analysis showed that sex, age, and body mass index accounted for 51.1% of the jump distance variance. Among all the kinematic variables, take-off distance and take-off speed were accounted for the most of the variation in the jump distance. Physical education teachers and coaches should consider special attention to these anthropometrics and kinematic aspects in improving the standing long jump performance in children. 相似文献
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目的:对正常青年人步态的时空及运动学参数进行可靠性分析,确定步态参数的最佳测试次数,为步态测试次数的标准化提供依据.方法:利用三维运动捕捉系统采集35例正常青年人的步态时空及运动学参数;利用组内相关系数(ICC)对步态参数进行可靠性分析.结果:重复测试4次,正常青年人时空各参数的ICC值均达到0.9以上;重复测试6次,正常青年人运动学各参数的ICC值均达到0.9以上.结论:1)正常青年人每次测试取一个步态周期、重复测试4次能使时空参数达到较高的可靠性;2)同样条件下,正常青年人需要重复测试6次能使运动学参数达到较高的可靠性;3)正常青年人的时空参数的可靠性高于运动学参数. 相似文献
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ABSTRACTThe aim of this study was to identify the key kinematic parameters which contribute to higher spin rates in elite finger spin bowling. Kinematic data were collected for twenty-three elite male finger spin bowlers with thirty kinematic parameters calculated for each delivery. Stepwise linear regression and Pearson product moment correlations were used to identify kinematic parameters linked to spin rate. Pelvis orientation at front foot contact (r = 0.674, p < 0.001) and ball release (r = 0.676, p < 0.001) were found to be the biggest predictors of spin rate, with both individually predicting 43% of the observed variance in spin rate. Other kinematic parameters correlated with spin rate included: shoulder orientation at ball release (r = 0.462, p = 0.027), and pelvis-shoulder separation angle at front foot contact (r = 0.521, p = 0.011). The bowlers with the highest spin rates adopted a mid-way pelvis orientation angle, a larger pelvis-shoulder separation angle and a shoulder orientation short of side-on at front foot contact. The segments then rotated sequentially, starting with the pelvis and finishing with the pronation of the forearm. This knowledge can be translated to coaches to provide a better understanding of finger spin bowling technique. 相似文献
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Stuart McErlain-Naylor Mark King Matthew Thomas Gerard Pain 《Journal of sports sciences》2013,31(19):1805-1812
AbstractThis study aimed to investigate the contributions of kinetic and kinematic parameters to inter-individual variation in countermovement jump (CMJ) performance. Two-dimensional kinematic data and ground reaction forces during a CMJ were recorded for 18 males of varying jumping experience. Ten kinetic and eight kinematic parameters were determined for each performance, describing peak lower-limb joint torques and powers, concentric knee extension rate of torque development and CMJ technique. Participants also completed a series of isometric knee extensions to measure the rate of torque development and peak torque. CMJ height ranged from 0.38 to 0.73 m (mean 0.55 ± 0.09 m). CMJ peak knee power, peak ankle power and take-off shoulder angle explained 74% of this observed variation. CMJ kinematic (58%) and CMJ kinetic (57%) parameters explained a much larger proportion of the jump height variation than the isometric parameters (18%), suggesting that coachable technique factors and the joint kinetics during the jump are important determinants of CMJ performance. Technique, specifically greater ankle plantar-flexion and shoulder flexion at take-off (together explaining 58% of the CMJ height variation), likely influences the extent to which maximal muscle capabilities can be utilised during the jump. 相似文献
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The aim of this study was to identify those kinematic characteristics that are most closely related to an athlete's medical classification and measured distance of a put. Two S-VHS camcorders (60 fields per second) were used to record the performance of 17 males of different classes. Each participant performed six trials and the best trial for each was selected for analysis. Three-dimensional kinematics of the shot and upper body segments at the instant of release and during the forward thrust (delivery) were determined. The average speeds and angles of the shot at release for different classes (5.3-7.8 m x s(-1) and 21.2 to 34.4 degrees, respectively) were smaller than those exhibited by elite male able-bodied throwers. The height of the shot at release, the angular speed of the upper arm at release, the range of motion of the shoulder girdle during the delivery, and the average angular speeds of the trunk, shoulder girdle and upper arm during the delivery, were all significantly correlated with both the classification and measured distance (P < 0.05). The results indicate the importance of achieving a high average angular speed for each upper body segment during the delivery. 相似文献
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The aim of this study was to identify those kinematic characteristics that are most closely related to an athlete's medical classification and measured distance of a put. Two S-VHS camcorders (60 fields per second) were used to record the performance of 17 males of different classes. Each participant performed six trials and the best trial for each was selected for analysis. Three-dimensional kinematics of the shot and upper body segments at the instant of release and during the forward thrust (delivery) were determined. The average speeds and angles of the shot at release for different classes (5.3-7.8 ms -1 and 21.2 to 34.4°, respectively) were smaller than those exhibited by elite male able-bodied throwers. The height of the shot at release, the angular speed of the upper arm at release, the range of motion of the shoulder girdle during the delivery, and the average angular speeds of the trunk, shoulder girdle and upper arm during the delivery, were all significantly correlated with both the classification and measured distance ( P ? 0.05). The results indicate the importance of achieving a high average angular speed for each upper body segment during the delivery. 相似文献
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采用摄像机现场拍摄法、影片解析法以及数理统计法,对我国优秀散打运动员柳海龙鞭腿击打沙袋的全过程进行了处理和分析,获得较全面的人体运动学指标和参数,对获得的指标和参数进行了定性、定量的系统分析,得出散打运动员柳海龙鞭腿运动速度的基本特征。为散打运动的研究提供典型的鞭腿运动学指标和参数。 相似文献
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本文运用ARIEL／APAS三维图像解析系统对优秀乒乓球运动员反手台内侧拧技术动作进行了三维立体拍摄和解析,对乒乓球反手台内侧拧技术动作进行系统的运动学分析,揭示了反手台内侧拧技术的运动学特征与规律,为台内反手侧拧动作技术教学、训练、评价、诊断提供理论参考。 相似文献