对我国掷标枪后备人才最后用力投掷技术的探讨   总被引：2，自引：0，他引：2  

曲淑华  马树芝  曲言明 《北京体育大学学报》2003,26(5):692-693,696

对中国优秀青少年标枪运动员的技术进行分析,分析我国的青少年标枪运动员的掷标枪技术不十分理想。主要表现在:最后用力时的右脚着地发力不积极;左膝关节弯曲过大,并在出手时没有充分伸展;投掷手臂没有明显的延迟动作。  相似文献   

掷标枪技术教法研究   总被引：5，自引：0，他引：5  

黄浩 《武汉体育学院学报》2001,35(2):53-54

为探索现代标枪技术新教法的可行性，进行了该教学实验。对两个班72名男生进行配对分组，并采用新旧两种教法教学。结果表明，在技评、达标与成绩提高的幅度等方面，实验组均优于对照组，并存在显著性差异。因此，新教法具有可行性。  相似文献   

铁饼飞行中的空气动力学原理与关键技术分析   总被引：2，自引：0，他引：2  

雷鸣 《沈阳体育学院学报》2003,(2):99-100

铁饼投掷的运动成绩是由运动员的身体素质、专项技术能力和铁饼在空中飞行时空气动力等因素所决定的。将空气动力学的基础知识应用到投掷铁饼出手动作“控饼”技术的教学与训练中 ,从而获得理想的出手初速度、适宜的出手角度和铁饼飞行中的合理倾角 ,以达到提高教学与训练质量和运动技术水平的目的。  相似文献   

提高投掷运动员专项投掷能力的强力方法   总被引：14，自引：0，他引：14  

吕新颖  马侠 《北京体育大学学报》2002,25(6):841-842,854

通过文献综述和理论分析,对提高投掷运动员专项投掷能力的肌肉的强力训练法和肌肉训练以外的内源性强力法进行综述,并分析各种强力方法对提高投掷运动员专项投掷能力的作用效果,为广大投掷教练员和运动员的训练提供参考.  相似文献   

Neuromuscular and technical abilities related to age in water-polo players     

Fabio De Siati  Guillaume Laffaye  Giorgio Gatta  Antonio Dello Iacono  Johnny Padulo 《Journal of sports sciences》2016,34(15):1466-1472

Testing is one of the important tasks in any multi-step sport programme. In most ball games, coaches assess motor, physical and technical skills on a regular basis in early stages of talent identification in order to further athletes’ development. The purpose of the study was to investigate anthropometric variables and vertical jump heights as a free throw effectiveness predictor in water-polo players of different age groups. Two hundred and thirty-six young (10–18 years) male water-polo players partitioned into three age groups underwent anthropometric variables’ measures and squat- and countermovement-jump tests, and performed water-polo free throws. Anthropometric variables, vertical jump heights and throw speed – as a proxy for free throw effectiveness – resulted different over age groups. Particularly, throw speed changed from 9.28 to 13.70 m · s^?1 (+48%) from younger to older players. A multiple-regression model indicated that body height, squat-jump height and throw time together explain 52% of variance of throw speed. In conclusion, tall height, high lower limb power and throwing quickness appeared to be relevant determinants for effective free throws. Such indications can help coaches during talent identification and development processes, even by means of novel training strategies. Further research is needed over different maturity statuses.  相似文献   

饵料组成对七彩神仙鱼最大摄食率、生长和消化吸收的影响     

雷思佳  肖迪烽  符丽影  范小凤  林玉鑫 《深圳职业技术学院学报》2007,6(1):14-16

在水温28℃的条件下,配制3种饲料(饲料I:猪心35%、牛心35%、虾肉30%;饲料II:猪心70%、虾肉30%;饵料III:牛心70%、虾肉30%),进行摄食-生长实验(实验周期为31d),实验鱼47.83-68.26g,测定其最大摄食率(Cmax)、特定生长率(SGR)、转化效率(K)和表观消化率(D)。方差分析表明:不同饲料对七彩神仙鱼的Cmax,SGR和K均无显著影响(p>0.05),其Cmax(湿),K,SGR的平均值是分别为3.00%,7.80%,0.24;而对D有显著的影响(p<0.05),饲料(Ⅰ)和(Ⅲ)的消化率相近,分别为95.58%和95.11%,饲料(Ⅱ)的消化率最低,为93.64%。  相似文献   

A scale-based approach to interdisciplinary research and expertise in sports     

Jorge Ibáñez-Gijón  Martinus Buekers  Antoine Morice  Guillaume Rao  Nicolas Mascret  Jérome Laurin 《Journal of sports sciences》2017,35(3):290-301

After more than 20 years since the introduction of ecological and dynamical approaches in sports research, their promising opportunity for interdisciplinary research has not been fulfilled yet. The complexity of the research process and the theoretical and empirical difficulties associated with an integrated ecological-dynamical approach have been the major factors hindering the generalisation of interdisciplinary projects in sports sciences. To facilitate this generalisation, we integrate the major concepts from the ecological and dynamical approaches to study behaviour as a multi-scale process. Our integration gravitates around the distinction between functional (ecological) and execution (organic) scales, and their reciprocal intra- and inter-scale constraints. We propose an (epistemological) scale-based definition of constraints that accounts for the concept of synergies as emergent coordinative structures. To illustrate how we can operationalise the notion of multi-scale synergies we use an interdisciplinary model of locomotor pointing. To conclude, we show the value of this approach for interdisciplinary research in sport sciences, as we discuss two examples of task-specific dimensionality reduction techniques in the context of an ongoing project that aims to unveil the determinants of expertise in basketball free throw shooting. These techniques provide relevant empirical evidence to help bootstrap the challenging modelling efforts required in sport sciences.  相似文献   

影响篮球比赛罚球的主要心理因素及其调控训练方法初探   总被引：1，自引：0，他引：1  

陈上越 《福建体育科技》1998,(1)

罚球是一种特殊的投篮技术,是篮球比赛中得分的重要手段之一。不少运动员在训练时命中率很高,而在比赛的关键时刻往往罚球不中。通过对比赛的观察统计及文献研究等方法,探讨影响罚球命中率的主要心理因素及其训练方法,供同行参考。  相似文献   

江苏省优秀女子链球运动员旋转技术的运动学分析     

徐勤儿  刘昌亚  赵军 《成都体育学院学报》2007,33(5):80-82,91

采用两台JVC9800高速摄影机,对江苏省3名优秀女子链球运动员的投掷技术进行拍摄和解析,并对旋转阶段的单、双脚支撑时间分布、链球加速距离、髋足角、链球运行斜面、身体重心变化等进行运动学分析与比较.  相似文献   

篮球自由投篮练习中培养学生自我调节能力的调查与分析     

何刚碧  冯士博 《体育科技文献通报》2009,17(6):61-61,90

近来,在训练和反省阶段过程中,调查了50名学生,发现他们获得了新的肌肉运动的技能（如自由投篮）和反省的信心。结果表明在参与者的训练中,自我调节阶段存在着绝对的线性趋势,以及他们的自由投射表演和投篮适应有明显提高。  相似文献