链球运动员的运动调节训练

实施运动调节训练的有益之处是使运动员运动系统的稳定完善具有一定规律性。一开始,身体对任何新的活动都会产生反应,这对最初的运动成功来说是很好的。接下来的进展更具有选择性,并且受运动细节和外部因素特性的调节。在这种调节下,身体的一种系统可能会得到重要的发展,而其他系统相对少一些。这取决于它们各自在运动活动需要中的作用。     

对2003-2012年关于链球运动研究概述

停随我国女子链球水平在国际地位上的提高,人们对链球运动的关注越来越多。文章通过对近10年关于链球运动的研究进行梳理,结果显示目前研究深度不够,其中多是以技术分析为主的基础性研究,缺乏综合性研究和运用性研究。另外出现结构不够合理,其中以奥运会优势项目女子链球为研究对象居多,占研究文献的61.5%,以其他为研究对象的不到40%;以研究链球技术为内容的占47.8%,训练手段的占18%,其他内容不足40%。文章旨在通过对前人研究进行综述,为今后的研究作一个参考,避免不必要的重复研究。     

影响我国男子链球运动成绩提高的因素分析

采用文献资料、数理统计、综合比较、逻辑分析等方法。对我国男子链球成绩滑坡的原因进行分析。结果发现影响我国男子链球成绩提高的主要因素是：运动员体重的不断增加；身体素质尤其是速度力量素质相对偏低；旋转技术不合理。     

中国和前苏联优秀链球运动员运动成绩的对比研究

本文通过逐步回归分析，找出了中国和前苏联两国运动员影响链球运动成绩的主要因素，发现了我国运动员提高链球运动成绩的关键因素。     

影响我国女子链球项目运动成绩提高的因素分析

文章采用文献资料法、数理统计法、对比分析法等研究方法,对我国女子链球项目现状进行分析,通过研究发现,影响我国女子链球专项成绩提高的主要因素是：运动员体重指标偏大;身体素质尤其是下肢速度力量素质发展水平较低;旋转技术亟待改善。     

试论吹枪少数民族传统体育的起源

运用田野考察法、文献资料法、归纳法、演绎法对吹枪少数民族传统体育的起源进行研究.研究表明：吹枪创始人群在吹枪作用于生产劳动基础上融入＂求越思想＂后将体育因子植入生产劳动中,从而使吹枪少数民族传统体育从吹抢生产劳动中剥离出来;在吹抢从生产劳动到体育的蜕变过程中以具有体育性质的吹枪活动能为吹抢创始人群带来更多的物质利益为驱动力,吹枪少数民族传统体育的源头是人类的＂求越思想＂.     

我国女子链球发展以及训练探讨

女子链球是近年发展起来的田径投掷项目，已被列为奥运会正式比赛项目。我国在这个项目上发展很快，已夺得世界冠军。我省也在发展这个项目，并有较大的提高。要赶上世界先进水平，我们只有加强训练，提高自己的水平，才能有所作为。     

链球运动的历史沿革与发展趋势研究

通过查阅文献资料对链球的起源与发展进行了整理和归纳,对我国链球运动的现状进行了分析和总结。并对今后链球运动的发展趋势作了深入的探讨和研究。     

链球运动成绩影响因素的分析

研究对象:主要运用数学计算的方法分析出手速度、角度、高度对于运动成绩的影响,作为检验计算结果与运动实践的吻合程度,我们选取了第五届世界田径锦标赛前八名优秀运动员、我国八运会前八名优秀运动员以及谢迪赫等相关数据。     

女子链球优秀运动员张文秀技术动作分析

采用两台JVC3000高速摄像机对中国女子链球优秀运动员张文秀的技术动作进行三维摄影测量,获得较为全面的人体运动学数据;运用SPSS软件对数据进行筛选和相关分析,发现该运动员在旋转时间、轨迹和速度等技术参数方面存在着一些制约成绩提高的问题,诸如双支撑时间短于单支撑时间、各圈(尤其第1圈)的轨迹倾角偏大、加速过程太短、单支撑阶段过于强调加速及双支撑阶段旋转过快、持续加速能力不强等.建议采取诸如提高双支撑阶段的加速用力、合理降低各圈的轨迹倾角、注意摆动脚的"晚提早落"、第1圈的加速不宜过急及注意调整该圈的单支撑动作等技术改进措施,以提高持续加速能力.     

An analysis of the relationship between the linear hammer speed and the thrower applied forces during the hammer throw for male and female throwers

The purpose of this study was to investigate the relationship between the cable force and linear hammer speed in the hammer throw and to identify how the magnitude and direction of the cable force affects the fluctuations in linear hammer speed. Five male (height: 1.88 ± 0.06 m; body mass: 106.23 ± 4.83 kg) and five female (height: 1.69 ± 0.05 m; body mass: 101.60 ± 20.92 kg) throwers participated and were required to perform 10 throws each. The hammer's linear velocity and the cable force and its tangential component were calculated via hammer head positional data. As expected, a strong correlation was observed between decreases in the linear hammer speed and decreases in the cable force (normalised for hammer weight). A strong correlation was also found to exist between the angle by which the cable force lags the radius of rotation at its maximum (when tangential force is at its most negative) and the size of the decreases in hammer speed. These findings indicate that the most effective way to minimise the effect of the negative tangential force is to reduce the size of the lag angle.     

Development and validation of a method to directly measure the cable force during the hammer throw

The development of cable force during hammer-throw turns is crucial to the throw distance. In this paper, we present a method that is capable of measuring cable force in real time and, as it does not interfere with technique, it is capable of providing immediate feedback to coaches and athletes during training. A strain gauge was mounted on the wires of three hammers to measure the tension in the wire and an elite male hammer thrower executed three throws with each hammer. The output from the gauges was recorded by a data logger positioned on the lower back of the thrower. The throws were captured by three high-speed video cameras and the three-dimensional position of the hammer's head was determined by digitizing the images manually. The five best throws were analysed. The force acting on the hammer's head was calculated from Newton's second law of motion and this was compared with the force measured via the strain gauge. Qualitatively the time dependence of the two forces was essentially the same, although the measured force showed more detail in the troughs of the force–time curves. Quantitatively the average difference between the measured and calculated forces over the five throws was 76 N, which corresponds to a difference of 3.8% for a cable force of 2000 N.     

投掷项目最后用力顺序探讨

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。     

博客在掷链球课程教学中的应用研究

博客是一种先进的信息交流平台,是网络中一种文化现象,它不但影响着我们的学习方式,而且影响着我们的教学模式甚至教学理念。随着教育课程标准的深入实施,＂博客教学＂也成为一种新兴的网络学习方式,如今的教学模式与传统的教学模式有了很大的改变,博客的兴起为教师的教学提供了一种新的教学方法,通过博客这个网络平台,使我们的教学形式从单一走向多元化,让学生与教师通过博客进行沟通与交流,使教与学更加的和谐。文章针对博客应用于体育运动技术教学的有效性进行讨论,利用多种研究方法分析博客对运动技术学习产生的影响,展示了博客在体育运动学习中的广阔前景。     

原始体育文化起源的考古学研究

随着考古学的发展，从史前考古学角度对史前化遗迹、遗物的分析研究，日益成为探讨原始体育化起源的重要途径。而体育考古学这一新的理论体系与方法的出现，为利用史前的遗存、有关材料及人类的思维能力去推断并确定原始体育化起源与发展过程的基本脉络、特定条件以及主要特征，提供了一种实证性的探索途径。从原始体育化起；醺的生物学前提、集体传习活动的生成机制与原始体育化起源、原始体育化起源的物质前提和原始体育化起源的仪式化前提四个方面，对原始体育化起源的可能条件进行了考古分析。     

Dynamics of the basketball shot with application to the free throw

Abstract

A completely general three-dimensional dynamic model is presented for the motion of basketball shots that may contact the rim, the backboard, the bridge between the rim and board, and possibly the board and the bridge simultaneously. Non-linear ordinary differential equations with six degrees of freedom describe the ball angular velocity and ball centre position. The model includes radial ball compliance and damping and contains five sub-models: purely gravitational flight, and ball – rim, ball – bridge, ball – board, and ball – bridge – board contact. Each contact sub-model has both slipping and non-slipping motions. Switching between the sub-models depends on the reaction force at, and velocity of, the contact point. Although the model can be used to study shots from any point on the court, we here use it to study the sets of free throw release angle, velocity, angular velocity, and lateral deviation angle that result in success (capture), as well as underhand free throws and those using an under-inflated ball. Free throw shots with larger backspin, lower inflation pressures, and underhand release conditions are shown to result in larger capture percentages.     

掷铁饼项目技术与力学特性的研究

对掷铁饼技术中身体姿势的平衡、旋转力矩的产生与有效传递、人——饼系统的旋转速度和轨迹特征、运动员的施力时机进行探讨。表明：身体重心的移动和支撑点的位置是维持旋转过程中身体平衡的基础，铁饼、上肢、躯干和下肢良好扭紧状态是有效形成力和传递力的前提，施力时机的准确把握能提高投掷效率。