世界优秀男子乒乓球运动员特长技术分析     

王军 《福建体育科技》2014,(6):31-33

采用文献资料等方法,对世界优秀男子乒乓球运动员特长技术进行研究,旨在提升我国乒乓球项目特长技术创新与发展。结果表明：世界优秀男子乒乓球运动员特长技术主要有8项,分别为,瓦尔德内尔横拍直握式发球技术和晃接技术、科贝尔反手侧拧技术、金泽洙步法技术、蒋澎龙加力推挡技术、格林卡反手横向拉球技术、马琳加转摆短技术和正手前冲弧圈球技术、朱世赫削中反攻技术、王皓直板横打技术。  相似文献   

Reliabilities of leg and vertical stiffness during treadmill running     

Panagiotis Pappas  Charilaos Tsolakis  Athanasia Smirniotou  Jean-Benoit Morin 《Sports biomechanics / International Society of Biomechanics in Sports》2014,13(4):391-399

The aim of this study was to determine the intra-participant variabilities (i.e. intra-day and inter-day reliabilities) in leg and vertical stiffness, as well as related kinematic parameters, during treadmill running using the sine-wave method. Twenty-two healthy men ran on a treadmill at 4.44 m/s, and the flight and contact times were measured with a high-speed video camera. Three 30-s running bouts with 2-min inter-bout rests were performed to examine the intra-day reliability, and single 30-s running bouts on three separate days with 24- to 48-h inter-bout intervals were performed to examine the inter-day reliability. The reliability statistics included repeated-measure analyses of variance, average inter-trial correlations, intra-class correlation coefficients (ICCs), Cronbach's α reliability coefficient, and the coefficient of variation. Both leg and vertical stiffness produced high ICCs within 0.972 and 0.982, respectively, and between 0.922 and 0.873 days, respectively. High values were also observed for all of the reliability coefficients. Similar results were found regarding contact time, flight time, step length, and step rate. It was concluded that the measurements of leg and vertical stiffness, as well as related kinematic parameters, obtained using the sine-wave method during treadmill running at 4.44 m/s, were highly reliable, both within and across days.  相似文献   

Anticipatory postural adjustments during cutting manoeuvres in football and their consequences for knee injury risk     

Guillaume Mornieux  Dominic Gehring  Patrick Fürst  Albert Gollhofer 《Journal of sports sciences》2014,32(13):1255-1262

Abstract

Anticipatory postural adjustments (APAs), i.e. preparatory positioning of the head, the trunk and the foot, are essential to initiate cutting manoeuvres during football games. The aim of the present study was to determine how APA strategies during cutting manoeuvres are influenced by a reduction of the time available to prepare the movement.

Thirteen football players performed different cutting tasks, with directions of cutting either known prior to the task or indicated by a light signal occurring 850, 600 or 500 ms before ground contact.

With less time available to prepare the cutting manoeuvre, the head was less orientated towards the cutting direction (P = 0.033) and the trunk was even more rotated in the opposite direction (P = 0.002), while the foot placement was not significantly influenced. Moreover, the induced higher lateral trunk flexion correlated with the increased knee abduction moment (r = 0.41; P = 0.009).

Increasing lateral trunk flexion is the main strategy used to successfully perform a cutting manoeuvre when less time is available to prepare the movement. However, higher lateral trunk flexion was associated with an increased knee abduction moment and therefore an increased knee injury risk. Reducing lateral trunk flexion during cutting manoeuvres should be part of training programs seeking the optimisation of APAs.  相似文献   

乒乓球运动员应加强快速、准确、灵活的步法训练   总被引：1，自引：0，他引：1  

孙文君 《体育科学研究》1997,(2)

论述了乒乓球运动员在短时间内,根据来球方向、速度、落点以及旋转等快速作出判断时步法移动的重要意义,并提出一些训练措施。  相似文献   

台阶无氧功率实验方法新探   总被引：1，自引：0，他引：1  

洪涛  范跃  杨善君 《山东体育学院学报》1994,(1)

应用身高百分比对每步跨台阶垂直高度进行标定的方法，对２１名运动员和４３名学生的台阶无氧功率实验进行了方法学研究。结果证明，以不同每步跨台阶垂直高度所测得的个体无氧功率有明显差异；认为个体最大台阶无氧功率与个体最佳用力幅度有密切关系，后者可以反映受试的训练水平和技术水平，对选材和机能评定有参考价值。  相似文献   

对纵箱支撑跳越教学步骤的实验研究     

栾少君 《成都体育学院学报》1997,(2)

根据人类跳越障碍的自然活动能力，设计了一套纵箱支撑跳越教学步骤，经实验证明，此教学步骤可有效地预防教学中学生不良心理、生理状态的产生  相似文献   

侧踹腿与步法有效结合的战术效果探析     

于旭洋 《搏击·武术科学》2011,8(1):70-72

文章运用文献资料法、综述法等研究方法,分析与论述散打侧踹腿技术以及步法和战术的协调配合,探讨侧踹腿技术的特点、步法的实用性、战术效果,训练方法,对提高散打运动员的技战术意识和战术水平具有重要作用。  相似文献   

“阳光体育运动”视阈下学校武术发展长效机制探析     

刘旭东  孙鹏 《搏击·武术科学》2011,(4):14-15

文章通过文献资料法、逻辑分析等研究方法,指出在全面贯彻党的教育方针,认真落实"健康第一"的指导思想下,作为民族传统体育项目之一的武术运动,如何在"阳光体育运动"的大环境下,充分发挥其精神实质、运动技能,能在中学体育教学中占有一席之地,并能长盛不衰的进行下去,而不是昙花一现,这是摆在有关部门和武术教育工作者面前的一项艰巨任务,并由此提出促进学校武术发展的若干长效机制。  相似文献   

项目引领教学法在《法律基础》课程教学中的运用     

李进 《安徽职业技术学院学报》2011,10(1):58-60

《法律基础》课程是大学生提高法律修养和法律意识的主阵地,教学效果能否达到,关键是能否恰当使用正确的教学方法,使学生们既增长知识又潜移默化地接受了法制教育。文章将项目引领法引入到《法律基础》的教学过程中,介绍项目引领法在《法律基础》课程教学过程中的实施步骤,分析项目引领教学方法在《法律基础》教学中的显著特征及实施效果,以求对教学有所裨益。  相似文献   

中职工程测量专业实践环节的问题和对策     

蒋文慧 《科教文汇》2011,(24):52-52,71

本文针对用人单位对工程测量专业学生的要求,分析目前中等职业学校该专业在实践环节存在的问题的基础上,提出了相应的改革措施。  相似文献