关于标枪出手速度的效果测度灰色关联分析

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。     

用简易测量计算法指导投掷铅球训练的实验

影响铅球投掷远度的因素有:出手角度,出手高度及出手速度。有经验的教练员都清楚,加大运动员的力量即能获得更大的出手速度,然而对运动员的出手角度却难于提出量化要求,在这方面往往只能凭自己的经验对运动员进行指导。本文试图通过对铅球运动员出手角度的理论计算,求出运动员的最佳出手角度,并以此为参数对运动员进     

链球运动成绩影响因素的分析

链球出手后在空中所做的运动为抛物体运动,影响抛物体远度的主要因素为:出手速度、出手角度、出手高度。主要运用数学的方法计算出手速度、角度、高度时于运动成绩的影响,并对于影响链球运动成绩的诸多因素进行了分析,以帮助教练员与运动员在链球运动实践中把握动作技术的关键。     

掷标枪中动作速度的作用及训练模式的探讨

决定标枪运动成绩最主要的因素是标枪的出手速度 ,出手速度与运动员最后用力过程中发挥的动作速度密切相关。影响动作速度的因素有体质和技术两方面 ,重视动作速度的训练和选材对提高标枪运动成绩有着十分重要的意义     

掷标枪中动作速度的作用及训练模式的探讨

决定标枪运动成绩最主要的因素是标枪的出手速度 ,出手速度与运动员最后用力过程中发挥的动作速度密切相关。影响动作速度的因素有体质和技术两方面 ,重视动作速度的训练和选材对提高标枪运动成绩有着十分重要的意义     

优秀男子标枪运动员最后出手特征分析

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。     

投掷铁饼的基本原理

一、决定投掷远度的因素 A.出手的速度;B.出手的角度;C.出手的高度;D.器械本身特有的空气动力学因素(指标枪与铁饼的差别)。二、成功地完成投掷动作与下面的因素有关 (一)正确的投掷技术 1.适当的身体平衡和姿势:这是保证获得最大的动作幅度、充分发挥身体各部分最大效能的前提。     

英语宝典

正铅球一般特征影响运动成绩的最主要因素是铅球的出手速度,世界上许多优秀铅球运动员的出手速度都能超过14米/秒。腿、躯干和手臂肌肉的伸展用力,对铅球的加速起到重要作用。     

如何加大器械出手速度的思考——以掷标枪为例

掷标枪是田径运动中技术比较复杂的项目之一,出手速度是影响其成绩的重要因素之一,以右手持枪为例来分析如何提高标枪的出手速度。     

浅谈双手肩上前抛实心球的训练

体育高考术科中实心球项目得高分的难度加大,对教练员的训练也提出了很大的挑战,投掷实心球训练中出手速度、出手高度、出手角度是影响成绩的基本因素,把握关键环节才能更有效地提高成绩。     

标枪投掷的动作速度及其训练

随着运动训练的科学化、专门化及针对性的日益加强，我们认为掷标枪的技术与能力的结合是否完美，则集中体现在投掷的动作速度上。本文将围绕最后用力阶段的投掷动作速度问题，从决定动作速度的几个因素出发进行分析论证，并提出对标枪运动员的训练特点。     

对少年标枪运动员力量训练方法的研究

结合国内外关于标枪运动员力量训练研究的文献资料，找出适合我国运动员的训练方案，进而归纳出能提高标枪运动员力量素质的训练方法和依据。标枪运动员的训练应以发展速度力量为主。专项投掷力量的训练应与技术紧密结合，标枪运动员的力量训练应遵守循序渐进的原则，选择正确的力量训练手段，贯穿到整个训练计划中去。     

Release parameters at the foul line and the official result in javelin throwing

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.     

掷标枪投掷步技术教学的重点难点分析

采用文献资料法，结合多年从事标枪项目训练的经验，从运动训练学角度对掷标枪投掷步技术教学的重点难点进行分析研究。研究表明：教学的重点难点应根据投掷步技术在投掷步过程能否体现速度和节奏以及是否有利于最后用力来确定。建议教学中要处理好全面与重点的关系；突出技术内涵的教学；选择适宜的练习方法、手段；加强专项素质训练。     

The biomechanics of javelin throwing: a review

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.     

Editorial

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.     

标枪运动员专项速度训练模式研究

从专项速度入手,对标枪运动员专项速度训练模式进行研究,其目的在于通过对标枪运动员专项速度的研究,进一步明确专项速度在标枪运动中的重要作用,设计适合标枪运动员的专项速度训练模式,为标枪运动的快速发展提供可参考和借鉴的理论依据。