共查询到18条相似文献，搜索用时 156 毫秒
1.
张东兵 《武汉体育学院学报》2004,38(2):105-106,113
对铅球、标枪、铁饼在最后用力阶段非投掷臂的大幅度摆动成绩与小幅度摆动成绩进行了实验研究。研究结果表明，非投掷臂在最后用力阶段的正确姿势对投掷成绩有显著的影响：铁饼成绩提高最显著，其次是标枪、铅球。 相似文献
2.
通过对铅球、标枪、铁饼在最后用力阶段非投掷臂的大幅度接动成绩与小幅度摆动成绩的实验研究,为提高投掷技术的教学、训练质量提供依据。研究结果表明,非投掷臂在《后用力阶段的正确姿势对投掷成绩有显著的影响;铁饼成绩提高最显著,其次为标枪、铅球。 相似文献
3.
《体育科技文献通报》1999,(6)
G824.03 9902756最后用力阶段非投掷臂对投掷成绩影响的比较研究=comparative study on the influence offree arm at last exert ion period uponachievements[刊,中,I]/苏开敏,许红峰∥体育科学研究.-1998.-2(1).-17-20参6(BJ)投掷∥最后用力∥非投掷臂∥姿势∥成绩通过对33名学生的铅球、标枪、铁饼在最后用力阶段非投掷臂的大幅度摆动成绩与小幅度摆动成绩的实施研究,为提高投掷技术的教学质量、训练成效提供理论和实践依据,研究结果表明:非投掷臂在最后用力阶段的正确摆动姿势对 相似文献
4.
铅球运动可以说是对各个技术环节都非常严格要求的运动项目。近年来,随着科学技术的应用和技术动作的完善,人们越来越关注非投掷臂在铅球投掷中最后用力阶段的研究,并逐步地细致和深入的研究。根据在过去的教学、训练和比赛过程中的经验,由于受到种种因素条件的限制,一些教练员和体育教师一般只是注重运动员身体超越器械的动作要领和投掷臂的完美姿势,从而忽视了非投掷臂在整个铅球运动中的作用和其对投掷成绩的影响。在投掷技术逐渐完善的今天,随着各种先进仪器设备的介入和使用,投掷铅球运动对动作的协调运行越来越受到人们的关注。实践证明,在铅球运动中的最后用力阶段,非投掷臂的摆动路线、特点、摆动时机等都会对保持身体重心的平稳,力量的集中造成影响,从而影响铅球的投掷成绩。 相似文献
5.
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
6.
运用文献资料法、数理统计法等,对优秀男子铁饼运动员的数据进行分析。结果显示：优秀男子铁饼运动员掷铁饼最后用力阶段非投掷臂制动时机开始应在左脚着地后0.03 s左右或非投掷臂处于方位角180°到220°范围内。优秀男子铁饼运动员非投掷臂转动速度与左肩和右肩转动速度具有高度的相关性,通过相关分析发现非投掷臂与左肩转动速度保持一致,二者基本处于相对静止。部分优秀男子铁饼运动员的非投掷臂摆动方式存在着随着身体转动的一种被动式摆动的错误动作,非投掷臂的摆动是一种主动式的摆动。 相似文献
7.
铅球的最后用力是一种复杂的技术,多年来我们一直重视投掷臂一侧的技术,研究的也较为深刻,而非投掷臂却有被忽视的现象,这样到了一定水平会使铅球成绩停滞不前,明确了非投掷臂的作用,在学习中有意识的加强它们的练习,这对提高铅球成绩有非常重要的作用。以下以右臂为投掷臂从两方面进行 相似文献
8.
铅球的最后用力是一种复杂的技术,多年来我们一直重视投掷臂一侧的技术,研究的也较为深刻,而非投掷臂却有被忽视的现象,这样到了一定水平会使铅球成绩停滞不前,明确了非投掷臂的作用,在学习中有意识的加强它们的练习,这对提高铅球成绩有非常重要的作用。 相似文献
9.
铅球、标枪、铁饼都是以远度决定成绩的田赛项目，在整个投掷技术动作中，最后用力技术动作的好坏是取得优异成绩的关键。所以，掌握良好的最后用力技术对提高投掷成绩有着至关重要的作用。 相似文献
10.
掷铁饼技术可以分为四个阶段,即预摆阶段、旋转阶段、最后用力阶段和缓冲阶段。在预摆阶段,摆动动作开始,投掷者移动身体以便进入旋转阶段。在旋转阶段,加快铁饼的运行速度,身体下半部旋转并超过身体上半部以预先拉长最后用力的肌群。在最后用力阶段,创造附加速度,并使其在铁饼出手前转移到铁饼上。在缓冲阶段,投掷者应稳固支撑,避免犯规。 相似文献
11.
运用文献资料法、数理统计法、比较分析法对第1-16届世锦赛男子投掷成绩发展变化特征进行分析，并根据灰色预测模型及置信区间对第17届世锦赛男子投掷各单项前8名平均成绩进行预测，结合当前我国男子投掷竞技表现，为我国男子投掷成功备战第17届世锦赛提供参考。结果表明：男子铅球和铁饼成绩变化起伏不大且正处于上升阶段；男子标枪正处在发展的黄金时期，竞技水平较高，竞争激烈；男子链球成绩正呈现下降趋势，且下降幅度较大；第17届世锦赛男子铅球、铁饼、标枪及链球前8名平均成绩预测值分别为21.50m、66.23m、88.79m、77.06m，从预测值来看，第17届世锦赛男子铅球和标枪前8名平均成绩会有一定幅度上升，而男子铁饼和链球前8名平均成绩会出现小幅度下降，我国男子投掷应根据自身竞技水平、世锦赛男子投掷各单项成绩发展特征及预测情况进行针对性训练、排兵布阵；另外通过分析世界男子投掷项目成绩发展变化趋势，从运动员选材、运动训练、投掷技术给我国教练员及运动员提出建议。 相似文献
12.
第1～29届奥运会男子田径投掷项目发展特征 总被引：1，自引：1，他引：0
张玉泉 《体育成人教育学刊》2010,(1)
对1896～2008年间历届(1～29届)奥运会田径投掷项目前3名运动成绩进行了定量分析.结果显示:田径投掷各单项间速度发展是极不平衡的,各单项发展速度依大小排序为;铁饼>标枪>铅球>链球,且各单项都有其各自的发展空间及轨迹特征.各单项成绩的提高速度与该时期训练方法、手段、技术的创新及规则的更新密不可分,并受当时战争、经济、科学、文化诸多方面的影响. 相似文献
13.
对中国女子竞技田径进行了系统的分析,结果表明:中国女子竞技田径发展轨迹呈倒V字型,其最好竞技成绩大部分出现在国内赛场上,与奥运战略所背驰;中国女子竞技田径各项目发展极不平衡,从项目所属项群看,中长跑类项群、短跑类项群、投掷类项群发展较好;从单项发展速度看,铅球、铁饼、标枪发展速度最快。 相似文献
14.
15.
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
16.
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
17.
Jemima Grace Spathis Mark James Connick Emma Maree Beckman Peter Anthony Newcombe Sean Michael Tweedy 《Journal of sports sciences》2015,33(8):863-871
Paralympic throwing events for athletes with physical impairments comprise seated and standing javelin, shot put, discus and seated club throwing. Identification of talented throwers would enable prediction of future success and promote participation; however, a valid and reliable talent identification battery for Paralympic throwing has not been reported. This study evaluates the reliability and validity of a talent identification battery for Paralympic throws. Participants were non-disabled so that impairment would not confound analyses, and results would provide an indication of normative performance. Twenty-eight non-disabled participants (13 M; 15 F) aged 23.6 years (±5.44) performed five kinematically distinct criterion throws (three seated, two standing) and nine talent identification tests (three anthropometric, six motor); 23 were tested a second time to evaluate test–retest reliability. Talent identification test–retest reliability was evaluated using Intra-class Correlation Coefficient (ICC) and Bland–Altman plots (Limits of Agreement). Spearman’s correlation assessed strength of association between criterion throws and talent identification tests. Reliability was generally acceptable (mean ICC = 0.89), but two seated talent identification tests require more extensive familiarisation. Correlation strength (mean rs = 0.76) indicated that the talent identification tests can be used to validly identify individuals with competitively advantageous attributes for each of the five kinematically distinct throwing activities. Results facilitate further research in this understudied area. 相似文献
18.
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