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本文从失球因素、失球区域和射门方式方面对第14届世界杯足球赛决赛52场比赛的115个失球进行了分析。其中,盯人不紧是失球的首要因素;罚球区是失球的主要区域;直接射门是得分的主要方式。 相似文献
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对第十八届世界杯足球赛决赛阶段32支球队64场比赛的147个失球特征进行分析,结果表明:从失球数量来看,本届世界杯场均失球数少于此前3届世界杯,从失球的区域分布来看,失球最多的区域是2区和3区;盯人不紧、定位球、未封住射门路线是失球的主要因素;从失球时段来看,上半场失球多于下半场,61~75min是防守相对稳定阶段,比赛75~90min是失球的高峰期。 相似文献
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采用文献资料、数理统计等方法，对第18届世界杯足球赛失球数量、失球因素、失球区域和失球时间等进行了分析研究，结果表明：盯人不紧、未封住射门路线、抢点失利是失球的主要因素；罚球区是失球的主要区域；比赛最后15min失球最多。 相似文献
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第13届亚洲杯足球赛进球情况分析 总被引：2，自引：0，他引：2
通过对13届亚洲足球赛复赛阶段32场比赛96个进球、进球的区域、时间、射门进球的方式及手段进行了统计分析,研究讨论了本届亚洲杯足球赛射门进球的规律。结果显示:本届亚洲杯攻势足球盛行;1区和2区内的左中、正中、右中三区是进球的最佳区域;下半时的前后15min是进球的高峰期,补时阶段进球数多;进球多为直接射门,头球作用非常大;定位球进攻是进球的最有效方式,两肋突破回传中路跟射是边路进攻新的打法。 相似文献
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何玮钊 《体育成人教育学刊》2012,28(6):90-92
对2012年第14届欧洲杯足球赛16支参赛队伍的失球数、被射门数、失球率、抢断和抢断率等综合防守能力进行研究,结果表明:欧洲各支队伍水平逐渐接近,场均失球数呈现逐渐减少的趋势,本届欧洲杯失球数场均2.45个,是近4届欧洲杯场均失球最少的一届。西班牙队在失球数、被射门数和失球率三项中都居于16强之首。反映球队综合防守能力的RSR值统计中,西班牙队以0.7599居第1位,俄罗斯、波兰、英格兰、葡萄牙以及克罗地亚队列第二档,意大利、德国、捷克、希腊、荷兰、瑞典、乌克兰和法国队居于第三档,爱尔兰队居第4档。西班牙队以绝对的优势在欧洲足坛傲视群雄,爱尔兰队整体能力的欠缺使球队尚无法与欧洲强队抗衡。 相似文献
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对第13届亚洲杯足球赛中国队进球与失球的情况进行分析,探求中国队进球与失球的因素以及进攻和防守战术运用的基本规律和特征,为中国队在世界杯预选赛小组赛以及今后的比赛提供参考. 相似文献
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通过文献资料法、观察统计法等方法,对13届亚洲杯足球赛14场关键比赛的角球进攻形式、传中球技术、传中球落点区域、射门技术、射门区域以及防守组织形式等方面进行了统计分析,基本反映了本届亚洲杯足球赛角球攻、防技战术特征,旨为我国从事足球教学、训练的教师和教练员提供一些参考与借鉴。 相似文献
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对第17届世界杯足球赛和第12届欧洲杯足球赛95场比赛的238个进球进行统计分析,其结果显示:右脚是射门进球的主要部位;射门宜低射、直接射门;边路、中路传球配合是突破防线最有效的进攻手段;定位球进攻的作用日益突出。 相似文献
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This study examined the effect of carbohydrate ingestion on metabolic and performance-related responses during and after a simulated 1h cycling time trial. Eight trained male cyclists (VO 2 peak = 66.5ml kg -1 min -1 ) rode their own bicycles mounted on a windload simulator to imitate real riding conditions. At a self-selected maximal pace, the cyclists performed two 1h rides (separated by 7 days) and were fed either an 8% carbohydrate or placebo solution. The beverages were administered 25 min before (4.5ml kg -1 ) and at the end (4.5ml kg -1 ) of the ride. With carbohydrate feeding, plasma glucose tended (P = 0.21) to rise before the time trial. Compared with rest, the plasma glucose concentration decreased significantly (P < 0.05) at the end of both rides, with no statistically significant difference being observed between treatments. Thereafter, plasma glucose increased significantly (P < 0.05) at 15 and 30 min into recovery, and was significantly higher at 30 min during the carbohydrate trial compared with the placebo trial. No significant changes in plasma free fatty acids were observed during the ride. However, a significant increase (P < 0.05) in free fatty acids was found at 15 and 30 min into recovery, with no difference between trials. Mean power output was significantly (P < 0.05) greater during the carbohydrate compared with the placebo trial (mean - S.E.: 277-3 and 269-3W, respectively). The greater distance covered in the carbohydrate compared with the placebo trial (41.5-1.06 and 41.0–1.06km, respectively; P < 0.05) was equivalent to a 44s improvement. We conclude that pre-exercise carbohydrate ingestion significantly increases endurance performance in trained cyclists during a 1h simulated time trial. Although the mechanism for this enhancement in performance with carbohydrate ingestion cannot be surmised from the present results, it could be related to a higher rate of carbohydrate oxidation, or to favourable effects of carbohydrate ingestion on the central component of fatigue. 相似文献
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Roy J. Shephard 《Journal of sports sciences》2013,31(7):603-620
The biology and medicine of rowing are briefly reviewed. Effort in a 2000 -m race is about 70% aerobic. Because the boat (and in some instances a cox) must be propelled, successful competitors are very tall, with a large lean mass and aerobic power. Large hearts may lead to erroneous diagnoses of a cardiomyopathy. Large respiratory minute volumes must be developed by chest muscles that are also involved in rowing. The vital capacity is typically large, and breathing becomes entrained. Expiration cannot be slowed relative to inspiration (as normally occurs at high rates of ventilation) and the limiting flow velocity may be reached, with the potential for airway collapse. Performance is strongly related to the power output at the ‘anaerobic threshold’, and lactate measures provide a guide to an appropriate intensity of endurance training. Peak blood lactate levels are higher in males (commonly 11–19 mmol·l -1 and occasionally as high as 25 mmol·l -1) than in females (9–11 mmol·l -1), probably because males have a greater muscle mass in relation to blood volume. The skeletal muscles are predominantly slow twitch in type, developing an unusual force and power at low contraction velocities. Many rowers have a suboptimal diet, eating excessive amounts of fat. Lightweight rowers also have problems of weight cycling. Aerobic power and muscle endurance often change by 10% over the season, but such fluctuations can be largely avoided by a well-designed winter training programme. Injuries include back and knee problems, tenosynovitis of the wrist and, since the introduction of large blades, fractures of the costae. 相似文献
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许良 《体育科技文献通报》2011,19(2):1-4
基于1985、1995和2005年全国学生体质调研数据,对各时期我国城乡学生形态、机能、体能发展水平进行系统地定量研究,动态分析20年全国城乡学生体质发展的特点与规律。主要研究结果：（1）近20年城乡学生生长发育持续提前,城市学生各项形态指标生长水平高于乡村,身高城乡差距缩小,体重、胸围城乡差距加大;（2）城市学生肺活量水平高于乡村,城乡学生肺活量20年持续下降,前10年乡村学生下降快、后10年城市学生下降快;（3）乡村学生800m、1000m跑水平高于城市,城市女生50m跑、仰卧起坐水平高于乡村,其他素质城乡学生水平波动较大;（4）城市女生50m跑20年持续下降,城乡学生800m和1000m跑、城市学生50m×8往返跑20年加速下降,其他素质20年间有增有降发展极不平稳。 相似文献
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采用测量、问卷调查、数理统计等方法,分析定向运动学习前后对大学生身心健康的影响.结果经T检验和x2检验且表明：定向运动不仅能增强学生体质健康水平,而且有助于学生的情绪调节,增强自信心与创新意识,培养勇敢顽强的意志品质,建立良好的人际关系,能有效地促进学生身心健康发展.为了全面提高大学生整体素质,积极实践,构建定向运动课内外一体化教学模式,进行定向运动课程模块化教学,以满足学生的多元化需求. 相似文献
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Alan M. Nevill Roger L. Holder Andrew Bardsley Helen Calvert Stephen Jones 《Journal of sports sciences》2013,31(4):437-443
A regression analysis of competitors' tournament results in relation to their world rankings was proposed to identify the effect of home advantage in international ‘grand-slam’ tennis and ‘major’ golf tournaments. The results provided little evidence of home advantage in either the grand-slam tennis or the golf tournaments held in 1993. The only possible evidence of home advantage was found in the Wimbledon tennis and the US Open golf championships. Even these findings can be explained, at least partially, by (1) the availability of information concerning the low world rankings of the British tennis players competing at Wimbledon, and (2) selective entry, allowing only the world's top-ranked foreign golfers into the US open golf tournament. In both cases, the lower ranking home competitors have a greater opportunity to perform above their anticipated world rankings. Therefore, provided entry into tennis and golf tournaments is truly ‘open’ to both the host nation's representatives and foreign competitors alike, home advantage does not appear to be a major factor influencing the competitors' performance in such competitions. These findings may be explained by the relatively objective nature of the scoring systems used in tennis and golf, unlike the subjective influence of refereeing decisions on the results of team-games such as soccer. 相似文献
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曲爱宁 《体育科技文献通报》2007,15(8):97-98
柔韧素质是健美操专业学生的专项素质之一,通过对普通高校健美操专业学生分组对照进行柔韧性训练的实验研究,认为对训练肌群辅以按摩器振颤刺激,可大大提高柔韧性训练效果。 相似文献
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我国城市体育自然环境建设与发展的研究 总被引：5，自引：0，他引：5
采用实地调查研究、理性思维研究和文献资料调研等方法对主要问题进行了专门研究，提出了进行城市体育场所区域生态功能区划、设计体育生态功能区布局的方案、做好体育场所绿色环境系统规划、制定体育场所生态与绿地管理措施等基本观点，提出了若干城市体育自然环境建设与发展的对策。 相似文献
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重新认识体育的社会关联 总被引：3，自引：1，他引：2
体育与政治之间存在一个悖论，体育的发展与经济实力之间没有直线相关，体育与教育部分重叠，体育与宗教最为近缘，体育可借用科学手段，体育的艺术禀性日益明显，体育与养生反映着两种人生观。 相似文献