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1.
优秀男子标枪运动员最后出手特征分析 总被引：3，自引：0，他引：3
对世界优秀标枪运动员的专项成绩与出手速度、出手角度等因素进行灰色关联分析,揭示了男子优秀标枪运动员最后出手技术的主要特征,为标枪运动训练提供参考。 相似文献
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范威威 《体育科技文献通报》2006,14(6):69-70
本文将对中、外部分优秀女子标枪运动员最后用力技术运动学指标进行比较分析,找出我国优秀女子标枪运动员最后用力技术方面的不足,对完善其最后用力技术提供理论依据。研究对象:以中、外部分优秀女子标枪运动员为研究对象。研究方法:文献资料法、数理统计法、对比分析法。结果与分析由于人们对最后用力的起止界定存在着分歧,本文对最后用力阶段的起止界定如下:最后用力阶段从右脚着地身体重心前移超越右脚支点后开始到标枪出手为止。1.最后用力右脚着地至左脚着地时躯干后倾角一般认为,左脚着地瞬间躯干后倾角在20°～25°内比较合理。我国… 相似文献
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我国优秀男子标枪运动员从交叉步到出手技术生物力学分析 总被引：6，自引：0，他引：6
采用高速摄影等方法,从生物力学角度对我国优秀男子标枪运动员交叉步、最后用力的技术和出手参数进行了分析,发现我国男子标枪运动员在进入交叉步时上体过早后仰或后倒、两腿“剪绞”动作存在不合理现象以及最后用力时自下而上各环节的发力和力的传递存在明显缺陷等,这是影响其运动成绩提高的主要因素。 相似文献
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最后用力阶段髋的稳定性对标枪运动员出手初速度的影响 总被引：5，自引：1，他引：4
谭建共 《武汉体育学院学报》2002,36(1):88-90
通过对我国男子优秀标枪运动员最后用力阶段髋关节的运动状态进行测试与比较，发现左、右髋有其自身的运动规律，其稳定性直接影响到标枪的出手效果。 相似文献
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良好的标枪纵轴用力技术是整个标枪投掷技术中的重要环节,最后出手时的末节用力效果如何,直接影响着优异成绩的取得,在此介绍几种提高标枪出手技术的实用训练方法: 1.原地插枪练习法(以右手为例,下同) 练习者身体直立,两腿左右站立约与肩宽,将标枪竖直高举,枪尖朝下。然后用力向下挥臂、甩腕、将标枪垂直插入地面。练习时的出手速度可由慢到快逐渐提高。 要求:练习者体会出手时的纵轴用力及甩腕鞭打时的动作感 相似文献
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通过对我国优秀女子标枪运动员投枪出手速度的效果测度灰色关联分析，揭示其有关因素对标枪出手速度所起的作用及地位。结果表明：影响标枪出手速度的首要因素是标枪离手时的左膝角，说明左腿迅速而充分的蹬伸对出手速度起着重要的影响作用。 相似文献
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为探索我国男子优秀标枪运动员的技术,采用了高速摄影机与影片分析,对李荣祥等男子优秀标枪运动员掷标枪最后用力技术过程中,身体水平速度和器械(标枪)速度进行了运动学分析。从而,揭示了我国男子优秀标枪运动员最后用力技术的特征。为便于分析,将其分为右脚触地瞬间、左脚触地瞬间、标枪出手瞬间三个时相进行研究。1.身体重心水平速度的变化交叉步右脚触落地后,由于人体的重心位于右脚支撑点后上方,地面对人体的反作用力方向与人体运 相似文献
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谢美容 《体育科技文献通报》2023,(2):17-18+117
本文主要以俄勒冈世锦赛女子标枪前八名运动员技术运用特征为研究对象,在观察2022年俄勒冈世锦赛标枪女子前八名运动员技术特征基础上进行分析研究。研究方法：采用文献资料法,专家访谈法、录像分析法、数理统计法等方法。结果表明：(1)2022年俄勒冈世锦赛标枪比赛前八名女子运动员持枪阶段持枪方式动作均是肩上持枪;(2)前三名女子运动员的助跑距离与第四名到第八名运动员的助跑距离相比呈缩短趋势;(3)前八名女子运动员在投掷步的第三步步时运用相对较长,而投掷步第四步的用时比较短;(4)第一名至第八名运动员最后用力阶段标枪出手速度依次减小,整体出手速度与世界平均值有一定的差距。 相似文献
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<正> 近几年来,我国女子标枪取得了可喜的成绩,连续有国手打破亚洲纪录,至今亚洲纪录仍由我国保持着。众所周知,投掷技术最重要的是最后用力阶段,本文对我国优秀女子标枪运动员最后用力动作进 相似文献
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谈现代标枪投掷技术的特点与发展趋势 总被引：1，自引：1，他引：0
井红丽 《哈尔滨体育学院学报》2006,24(4)
能力是基础,技术是关键,这是现代标枪的投掷特点和发展趋势。因此在投掷过程中首先要了解标枪在空中的运行轨迹并结合标枪的特点采取相适应的出手角和冲击角,才能发挥运动员身体最大潜能获得良好运动成绩。 相似文献
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标枪飞行轨迹的计算机仿真及实际应用 总被引：8，自引：0，他引：8
研究采用风洞实验和计算机仿真的方法，计算标枪在三维空间的飞行轨迹，对影响标枪飞行远度的各种因素，如出手速度、出手角度、初始攻角、初始俯仰角速度、初始偏航角等进行了定量分析，本文还根据标枪运动员投掷的实际情况提出了女子标枪运动员的最佳初始条件组合。 相似文献
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本文通过对我国优秀标枪运动员和世界优秀标枪运动员投掷步技术的分析与对比,结果发现：我国男子标枪运动员投掷步第1、2步躯干后倾角过大,第2～3步躯干后倾角变化幅度相对较小,以至于交叉步的动作速度及幅度受到影响;女子标枪运动员交叉步下肢前移幅度过小,影响躯干相关肌群收缩;我国男女运动员投掷步第4步都存在躯干后倾角下降较大,左膝弯屈角较小,左侧支撑无力的共性特征。 相似文献
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In this paper, the scientific literature and that on the sports sciences relevant to javelin throwing is critically reviewed. This is particularly timely because of the change in the specification of the javelin for the men's event, which was introduced by the IAAF in 1986. A full discussion of the aerodynamics of the javelin is presented with due consideration of the change in pitching moment characteristics that the rules change had brought about. The uses and limitations of current computer programs for simulating javelin flight, in order to estimate optimal release parameters, are profiled. Consideration is also given to the effects of wind velocity, air density, javelin weight and the flutter and spin of the javelin on its flight. The review further considers the optimization of release parameters, drawing upon computer simulations and field-based data. The effects of release speed, release height, release angle, release angle of attack and release pitch rate are assessed. The javelin throwing technique is discussed in relation to cinematographically derived data, including an evaluation of experimental procedures. The importance to successful performance of the grip, the run-up and transition phases, the cross over and delivery strides are each reviewed. Finally, some prognoses as to the direction of future research into this complex throwing skill are offered. 相似文献
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Thomas Reilly 《Journal of sports sciences》2013,31(1):1-2
In this paper, the scientific literature and that on the sports sciences relevant to javelin throwing is critically reviewed. This is particularly timely because of the change in the specification of the javelin for the men's event, which was introduced by the IAAF in 1986. A full discussion of the aerodynamics of the javelin is presented with due consideration of the change in pitching moment characteristics that the rules change had brought about. The uses and limitations of current computer programs for simulating javelin flight, in order to estimate optimal release parameters, are profiled. Consideration is also given to the effects of wind velocity, air density, javelin weight and the flutter and spin of the javelin on its flight. The review further considers the optimization of release parameters, drawing upon computer simulations and field‐based data. The effects of release speed, release height, release angle, release angle of attack and release pitch rate are assessed. The javelin throwing technique is discussed in relation to cinematographically derived data, including an evaluation of experimental procedures. The importance to successful performance of the grip, the run‐up and transition phases, the cross over and delivery strides are each reviewed. Finally, some prognoses as to the direction of future research into this complex throwing skill are offered. 相似文献
18.
付伟平 《体育科技文献通报》2010,18(2):37-38
当今投掷标枪技术正朝着快速助跑和快速投掷的方向发展,这对整个动作环节提出了较高要求,也对队员身体的左侧轴（左肩、左腿、左膝和左脚）,特别是左侧支撑工作提出了更高的要求。本文从生物力学角度对投掷标枪左侧支撑动作进行全面分析,科学论证了左侧支撑是掷标枪技术环节中不可忽视的一个重要因素。 相似文献
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我国优秀女子标枪运动员投掷步技术的运动学研究 总被引：3，自引：1，他引：2
对十运会田径比赛女子掷标枪决赛前8名运动员的投掷步技术进行解析研究。结果表明,我国优秀女子标枪运动员助跑速度快,但速度利用率却不高;投掷步时短,步频快,不能为最后的用力做好充分的准备;投掷各步躯干后倾角变化小,对标枪施力不够;左脚落地时膝角缓冲过大,制动效果差。同时,投掷成绩与最后交叉步后身体重心水平速度在一定程度上呈正相关。 相似文献
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Viitasalo J Mononen H Norvapalo K 《Sports biomechanics / International Society of Biomechanics in Sports》2003,2(1):15-34
Range in javelin throwing is determined by the release parameters and aerodynamic factors. The current study was designed to investigate the effects of release speed, release angle and uncorrected angle of attack measured at the foul line on the official javelin throwing result. The data were collected in international competitions for 26 elite male and 15 elite female javelin throwers (total 248 throws). Multiple regression models were constructed to predict the range of throw for a) individual throwers, b) a group of throwers using the mean value for each thrower in the analysis, and c) all individual throws registered for each gender separately. The data collection was carried out using a computerised photocell gate that consists of two invisible infrared walls two metres apart, perpendicular to the throwing direction. Release speed was found to have the highest correlation with the official throwing result. The three release parameters accounted for 56% of the variance in the official result for the male and 51% for the female throwers. For individual male and female throwers, the variance explained by the model was between 46 and 87%. Among the individual male throwers an increase of 1 m.s-1 in the release speed from 29 to 30 m.s-1 was calculated to increase the official result between 2.12 to 6.14 m while among the female throwers the effect of increase from 24 to 25 m.s-1 in the release speed was from 2.25 to 3.68 m. The study emphasises the importance of investigating javelin throwing biomechanics on an individual thrower basis. 相似文献