共查询到20条相似文献，搜索用时 234 毫秒
1.
运用文献资料、三段统计法、录像观察法、对比分析法等,对第49届世界乒乓球团体锦标赛及2008年北京奥运会乒乓球赛的61场暂停情况进行统计分析,结果表明:在高水平乒乓球比赛中,开局段的暂停以连续得3分以后为主要时机;中局段的暂停以连续得2分以后为主要时机;尾局段的暂停以得1分以后为主要时机;暂停时机的总体落位在场末局. 相似文献
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对排球教练员赛中场外指导的分析研究 总被引：1，自引：0，他引：1
排球新规则允许教练员比赛中站在本方场外对场上运动员进行指导，这是继暂停、技术暂停、换人、局间进行指导以外的又一新的指导方式，它给教练员临场指挥带来不同程度的影响，同时也对教练员提出了更高的要求。分析、研究排球赛中场外指导运用的时机和方法，以提高教练员对赛中场外指导的认识及临场指挥能力和水平，更好地适应和利用新的规则。 相似文献
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杨秀芝 《体育科技文献通报》2008,16(12):22-22,36
暂停作为篮球比赛中教练员临场指挥的一项重要措施，越来越引起人们的高度重视。在比赛中，科学、合理地运用暂停，常常会收到奇特的效果。本文运用文献法、逻辑分析法等，分别对篮球比赛中暂停的规定、运用时机和注意事项进行阐述，旨在引起篮球教练员对暂停的高度重视，为巧妙、合理地运用暂停提供理论参考。 相似文献
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<正> 一、暂停与换人 1.暂停的次数与时间有什么规定? 答:一局比赛中,一个队可有两次暂停机会。在第一次暂停结束之后未经比赛过程可再请求第二次暂停。每次暂停时间不得超过30秒钟。在暂停时间内,请求暂停的队可缩短暂停的时间,而另一队不得以对方暂停时间未到而延误比赛。 2.某队请求第三次暂停如何处理? 答:某队暂停之后,第二裁判员应通知该队的暂停次数,尤其是第二次暂停之后。如出现某队请求第 相似文献
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暂停作为排球比赛中的一项重要内容，越来越引起重视，在比赛中充分合理地利用暂停时间，常常能使比赛成绩有所改变。鉴于此，本对暂停的时机、运用、注意事项诸问题作以阐述。 相似文献
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现行《排球竞赛规则》规定：“第一局至第四局各有二次技术暂停，时间90秒。当任一队先获8分或16分时自动暂停。”纵观在每球得分制的比赛中应用该规定以来，我认为，所谓的“技术暂停”已经严重制约了排球运动的发展，实无存在之必要，建议尽快取消。理由如下： 相似文献
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排球竞赛规则对国际排联世界性比赛正式实施技术暂停：第１—４局每局有两次技术暂停,各为１分钟,每当领先达到５或１０分时自动执行;相应每个比赛队每局仅有一次机会请求３０秒钟的普通暂停。文章根据规则的这一变化,对比赛中教练员如何利用技术暂停进行相机巧变的临场指挥进行具体阐述 相似文献
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本文运用文献资料法、观察法．逻辑分析法,对排球比赛中暂停和换人的原则、运用时机进行了分析,暂停与换人是教练员在比赛中临场指挥时运用的重要手段,运用得当,选择时机正确,对扭转战局会产生较好的效果。希望教练员能够高度重视暂停和换人,从而提供合理利用暂停和换人参考性的建议。 相似文献
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暂停作为排球比赛中的一项重要内容,越来越引起重视,在比赛中充分合理地利用暂停时间,常常能使比赛成绩有所改变。鉴于此,本文对暂停的时机、运用、注意事项诸问题作以阐述。 相似文献
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中国国家队男子足球运动员比赛中体能特征研究 总被引：7，自引：1，他引：6
足球运动员的体能是运动员比赛中正常发挥技战术水平的基础,对比赛期长时间高水平竞技能力的保持和伤病的预防也有重要的作用.采用文献法、实验法和数理统计法分析中国国家队运动员比赛中的体能特征,并且与国外优秀足球运动员进行对比分析,研究结果表明:足球比赛负荷量大,小负荷运动比例大.中国运动员在比赛中跑动距离与国外运动员差距并不明显,但是,前锋和中场运动员的跑动距离相对较少;比赛负荷具有阶段性.在90 min的比赛中负荷强度出现2个峰谷,即在30～45 min和60～75 min两个时间段.在第2个峰谷,中国队运动员的跑动距离处于整场比赛较低水平,可能会影响这一时间段的技战术能力发挥和场上的攻守平衡局面. 相似文献
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第11届欧洲杯足球赛决赛阶段各队进球特征分析 总被引：5，自引：1，他引：4
通过对第11届欧洲杯足球赛决赛阶段16支球队31场比赛的75个进球特征统计,结果表明:下半场进球数高于上半场的进球数,且各时段的进球随比赛的进行逐渐上升。进球的主要区域是在罚球区内,进球方式仍然以脚射进球为主,头球的数量有所增加,提高了足球的立体型技战术水平。各位置进球数最多的仍然是前锋队员,中场队员的进球数增加,后卫队员进球数最少。边路进攻是进球的主要进攻形式,定位球也是本届欧洲杯进球的另一种重要的进球方式。进球传球次数符合足球获胜公式规律。 相似文献
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篮球意识的锻炼和提高，只有在有攻守对抗的情况下，在比赛的环境中才能进行。小型比赛训练模式是简化的5人制比赛，是一种渐进过程，是逐步走向真正比赛的最好训练手段。小型比赛训练模式可以为青少年提供大量接触篮球的机会，同时可以产生许多比赛局面供运动员识别，为运动员提供了一个真实的篮球比赛场景，所以它是青少年运动员提高篮球意识的有效方式。 相似文献
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Athletes’ perceptions of coaching competency and team conflict in sport teams: A multilevel analysis
I. González-Ponce F. M. Leo R. Jiménez D. Sánchez-Oliva H. Sarmento A. Figueiredo 《European Journal of Sport Science》2018,18(6):851-860
The purpose of this study was to examine the relationship between coaching competency and team conflict, at individual and team levels, over the season. The participants were professional female and male soccer players, who participated in the First and Second Division. A longitudinal study was performed. At Time 1, the sample of participants consisted of 581 soccer players aged between 15 and 39 years. At Time 2, 549 players were recruited from the original sample aged between 15 and 37 years. Finally, at Time 3, the sample comprised 576 players aged between 15 and 37 years. All participants completed a multi-section questionnaire assessing coaching competency (motivation, game strategy, technique competency, and character-building competency) and team conflict (task conflict and relationship conflict). Results showed that both task and relationship conflict increased significantly over time. Multilevel modelling analysis showed that game strategy and character-building competencies negatively predicted both task and relationship conflicts at the individual level, whereas motivation competency was also added as a significant predictor of task conflict at the team level. Moreover, technique competency positively predicted task conflict at the team level. The current study suggests the importance of coaching competency in group dynamics in sport. 相似文献
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董慧杰 《体育科技文献通报》2013,21(6):128-130
本文通过问卷调查法、访谈法,对参加内蒙古自治区第十二届学生运动会“东达·蒙古王杯”篮球比赛的十九支代表队的参赛队员、教练员及执法比赛的裁判员进行调查访谈,针对篮球比赛中裁判员与运动员交流的必要性进行探讨,认为在比赛中有必要进行适当的交流,有利于运动员对规则的理解,同时能够提高运动员的综合素质,确保比赛的顺利进行,但要注意交流的时机和方式。 相似文献
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浅析散打运动员在比赛中心理过度紧张的原因及克服方法 总被引：1，自引：0，他引：1
随阒散打运动的发展,科学训练的重视,运动员之间身体素质和技战术的差别越来越小,旗鼓相当的双方在决一雌的关键时刻,心理因素起决定性作用。良好的心理品质是体能和技能得以充分发毂的保证。本文通过调查了解,结合运动实践,对散打比赛中产生心理过度紧张的原因及克服方法进行分析探讨。 相似文献
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Da Silva RP Mündel T Natali AJ Bara Filho MG Alfenas RC Lima JR Belfort FG Lopes PR Marins JC 《Journal of sports sciences》2012,30(1):37-42
In this study, we assessed the pre-game hydration status and fluid balance of elite young soccer players competing in a match played in the heat (temperature 31.0 ± 2.0 ° C, relative humidity 48.0 ± 5.0%) for an official Brazilian soccer competition. Fluid intake was measured during the match, as were urine specific gravity and body mass before and after the game to estimate hydration status. Data were obtained from 15 male players (age 17.0 ± 0.6 years, height 1.78 ± 0.06 m, mass 65.3 ± 3.8 kg); however, data are only analysed for 10 players who completed the full game. The mean (± s) sweat loss of players amounted to 2.24 ± 0.63 L, and mean fluid intake was 1.12 ± 0.39 L. Pre-game urine specific gravity was 1.021 ± 0.004, ranging from 1.010 to 1.025. There was no significant correlation between sweat loss and fluid intake (r = 0.504, P = 0.137) or between urine specific gravity and fluid intake (r = -0.276, P = 0.440). We conclude that young, native tropical soccer players started the match hypohydrated and replaced about 50% of the sweat lost. Thus, effective strategies to improve fluid replacement are needed for players competing in the heat. 相似文献
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The aim of this study was to examine the possibility of obtaining information about the heart rate and physiological load imposed on soccer players during a game. The study was conducted on 27 soccer players, 9 each from semi-professional, university and recreational soccer teams. Players from all positions (attack, midfield and defence) were selected for the study. Each subject's heart rate was monitored during a match using a short-range radio telemetry (Sport Tester PE3000), and was sampled at 5-s intervals. The results indicate that it is possible to monitor successfully the heart rate of players with such equipment. The mean heart rate and standard deviation for each player during match play were: semi-professional players (172 +/- 12, 176 +/- 9 and 166 +/- 15 for forwards, midfielders and defenders, respectively); university players (171 +/- 13, 173 +/- 10 and 156 +/- 13 for forwards, midfielders and defenders, respectively); and recreational players (173 +/- 13, 170 +/- 12 and 162 +/- 13 for forwards, midfielders and defenders, respectively). Analysis by playing position revealed that midfield and forward players has a greater mean heart rate during a game than defensive players. To examine the suitability and accuracy of the two methods of obtaining objective data on heart rate, comparisons were made between the Sport Tester PE3000 and a standard electrocardiograph (ECG) telemetry technique. The results show that both techniques produce similar results; the former was the more convenient.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
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孙正绅 《西安体育学院学报》1994,(4)
头顶球技术在当今足球比赛中愈来愈受到教练员和运动员的重视，高速度、强对抗的整体型现代足球打法，使得比赛中激烈的争夺由地面发展到高空，头顶球技术是争夺高空的主要手段．本文拟对头顶大力踢出的足球时颅骨、颅脑的受力情况进行分析和研究，找到其不受损伤的理论依据，使初学者消除顾虑，结进行教学训练的教研者提供一些可靠的数据，以利于足球运动更广泛的开展和提高。 相似文献