软硬兼施：软硬排结合教学对硬排传球效果影响研究     

马丙奎  赵海龙  刘勇 《体育科技文献通报》2010,18(8):9-10,13

运用文献资料、教学实验等方法对软硬排结合教学在硬式排球传球教学过程中的教学效果进行研究。研究结果为：实验组和对照组男女生的立定跳远、50米跑、掷实心球三项测试成绩均无显著性差异；实验组和对照组男生传球达标和技评测试结果无显著性差异，女生传球达标和技评测试结果均有显著性差异；在软式排球向低压硬式排球过渡阶段，实验组男女生传球达标测试结果无显著性差异；在低压硬式排球向硬式排球过渡阶段，实验组男女生传球达标测试结果无显著性差异。  相似文献   

对“高手直臂投篮”技术的研究     

史凤云  姜长勇 《哈尔滨体育学院学报》1999,(1)

为探讨投篮技术的新发展,在观测和理论分析基础上,对高手直臂投篮技术结构特点;理论与实践意义及其发展现状进行了比较研究,阐明该项技术发展前景及存在的问题。  相似文献   

浅析毽球运动中的正脚背传球技术     

郭贤成 《搏击·武术科学》2010,(5)

毽球是一项新颖的竞赛项目,传球是组织进攻的桥梁。传球技术的好坏直接影响着战术配合和进攻技术的效果,在比赛中一个队的进攻能力能否得到充分发挥与传球技术有直接的关系。正脚背传球技术是毽球运动中常见的一种技术,它的技术比较难掌握,在组织进攻中比脚内侧传球更具有个人攻击优势。文章通过正脚背传球技术动作进行分析并阐述此技术在比赛中的运用和练习方法,提出应加大对正脚背传球技术及相关战术的研究力度,并形成一套相关的理论及训练体系。  相似文献   

第12届亚运会男子足球决赛阶段中国队攻入对方罚球区附近30m区域传接球失误原因的调查研究   总被引：3，自引：1，他引：2  

张廷安  杨刚 《西安体育学院学报》1994,(4)

本文通过对第１２届亚运会男子足球决赛阶段中国足球队比赛的统计分析，了解到男足队员在攻入对方罚球区附近３０ｍ区域内进攻失误中传球失误是造成进攻失败的主要原因，接停球失误的主要原因是接停球过大和第二动作缓慢．今后应加强这些薄弱环节的针对性训练，以促进男足水平的迅速提高。  相似文献   

PROFIBUS总线系统TTR的计算     

甄丽平  司绍伟 《中国科技信息》2011,(16):87-87,93

从分析PROFIBUS-DP的各种数据通信入手,分别详细分析了数据交换和令牌传的时间行为,给出了满足每个主站持有足够的令牌时间时,TTR的选取方法。  相似文献   

个体灵魂的自我拯救——试论“过客”行走的终极意义     

孙海军 《石家庄学院学报》2013,15(2):80-83

《过客》是《野草》重要的篇章之一,它不仅暴露了当时鲁迅自我认同和价值信仰的严重危机,更展现了作为生命个体的鲁迅全力自救的心理历程。过客的自省意识和实践精神激励起危机中的鲁迅,使得鲁迅通过自我拷问、自我调整,最终走出人生的第二次危机,重新建立起新的身份和信仰认同,由此凸现出"行走"这一生命情态在鲁迅个体灵魂自我拯救中的终极性意义。  相似文献   

Reliability and validity of two tests of soccer skill     

Ajmol Ali  Clyde Williams  Mark Hulse  Anthony Strudwick    Lee Howarth 《Journal of sports sciences》2013,31(13):1461-1470

Abstract

Twenty-four players from the 1st/2nd (elite) and 24 players from the 3rd/4th (non-elite) university football teams were recruited to evaluate the Loughborough Soccer Passing Test (LSPT) and Loughborough Soccer Shooting Test (LSST) as tools to assess soccer skill. The LSPT requires players to complete 16 passes as quickly as possible. The LSST requires players to pass, control, and shoot the ball to targets on a full-sized goal. Participants completed two main trials each separated by at least one day. During both trials, the participants were given practice efforts before recording the mean of the next two (LSPT) or 10 (LSST) attempts as the performance score. For the LSPT, the mean time taken, added penalty time, and overall performance time were less in the elite players (elite: 43.6 s, s = 3.8; non-elite: 52.5 s, s = 7.4; P = 0.0001). For the LSST, there was no difference in the mean points scored per shot between groups (elite: 1.34, s = 0.46; non-elite: 1.28, s = 0.53). However, the elite players had higher mean shot speed (elite: 80 km · h^?1, s = 4.5; non-elite: 74 km · h^?1, s = 4.2; P < 0.0001) and performed each shot sequence faster (elite: 7.87 s, s = 0.29; non-elite: 8.07 s, s = 0.35; P = 0.037) than the non-elite players. Performance on both tests was more repeatable in elite players. In conclusion, the LSPT and LSST are valid and reliable protocols to assess differences in soccer skill performance.  相似文献   

Informational constraints on the emergence of passing direction in the team sport of futsal     

《European Journal of Sport Science》2013,13(2):169-176

Abstract

This study investigated compound spatial and temporal measures of interpersonal interactions purported to constrain the emergence of affordances for passing direction in the team sport of futsal. For this purpose, attacker–defender interactions in 37 sequences of play from a futsal competition in which 24 male professional players participated (M=30.04 years, SD=4.10) were filmed and analysed using TACTO software. Relative angle data were used as measures to study coordination tendencies that emerged between players during performance. Results showed that the direction for a pass emerged from relative angles between: (1) the vector from a ball carrier to ball receiver and the vector from the ball carrier to the nearest defender (70°) (p<0.01) and (2) the vector from a ball carrier to ball receiver and the vector from the ball carrier to a ball receiver's nearest defender (31°) (p < 0.01). Furthermore, passing direction was also constrained by temporal information from the emergence of both angles, since the pass was performed to attacker–defender dyads with the highest velocities of these angles (p < 0.05). Results suggested that decisions on selecting the direction of a pass in the team sport of futsal emerged at critical values of these key compound motion measures.  相似文献   

室内五人制足球比赛传球方式特征研究     

任定猛 《北京体育大学学报》2013,36(1):123-126+139

现代五人制足球是对已有的传统足球运动形式进行改造而产生的,它与十一人制足球是同一运动的不同表现形式。五人制足球与十一人制足球训练竞赛过程的差异,是五人制足球运动理论研究的实践基础。鉴于现代五人制足球项目的研究现状和发展所需,对五人制足球运动的传球特征进行分析,结果显示:1)五人制足球比赛中运用最多的传球距离是小于10 m的短传球;2)停—传球是五人制足球比赛组织进攻过程中最为常用的传球组合方式;3)横传球是五人制足球比赛中运用最多的传球方向;4)中场是五人制足球比赛中传球次数运用最多的区域,这个区域也是组织进攻的主要区域。研究为提高我国五人制足球运动训练以及竞赛水平提供有益的理论支持。  相似文献   

Decoding codes on graphs     

A.?S.?MadhuEmail author  Aditya?NoriEmail author 《Resonance》2003,8(9):49-59

  相似文献