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篮球比赛是在激烈的对抗中进行的 ,攻守交错 ,运动员无论进攻或防守都要依据临场的情况采取不同的脚步动作在球场上移动。改变位置、方向、速度 ,达到获球、堵截、协防、创造进攻机会等目的。因此 ,脚步动作直接影响队员的应变能力和积极性。1 防守时的脚步动作篮球运动的对抗中坚固的防守尤其重要 ,脚步动作的灵活性又影响着防守威力的大小 ,一个球队防守威力大 ,没有后顾之忧 ,进攻才会得心应手。另外 ,防守好能挫败对手的进攻 ,提高本队士气。个人防守好才能构成集体防守能力的提高。防守的脚步动作多种多样 ,哪一种防守动作好 ,没有绝… 相似文献
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<正>在篮球比赛中,运动员要根据不同的情况,采用不同的脚步动作在球场上移动,改变速度、方向、位置。尤其在进攻中,无球队员通过跑动获得更多的机会组织进攻,而持球队员通过合理脚步移动也更能容易地突破对方的防守,完成进攻任务。可见,运动员在篮球比赛进攻中除了熟练掌握其他技能外,更重要的是进攻移动技术的运用。随着篮球运动向着高度、速度和技术的方向发展,对进攻移动技术的要求也将越来越高。 相似文献
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篮球比赛中个人防守的基本技术运用 总被引：2，自引：0，他引：2
篮球运动是一项由若干个体参与的集体性运动项目，其攻防技战术是通过各个体互相配合来实现的，个体的防守水平直接影响着全队防守的成效。依据篮球运动的规律，结合有关资料分析研究，阐明了篮球比赛中个人防守的位置选择、脚步站住方法、移动步法、盯人防守以及紧逼防守等基本技术的运用，以此促进提高队员防守基本技术的运用能力。 相似文献
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篮球比赛是在激烈的对抗中进行的．攻守交错．运动员无论进攻或防守都要依据临场的情况采取不同的脚步动作在球场上移动。改变位置、方向、速度．达到获球、堵截、协防、创造进攻机会等目的。因此．脚步动作直接影响队员的应变能力和积极性。 相似文献
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<正>防守脚步移动技术是篮球移动中的一项重要技术,它在比赛中占有重要地位,快速合理的防守脚步移动有助于抢占有利位置,破坏和阻挠对手进攻意图和行为,同时也可以减少防守中的犯规现象。但是,在训练和比赛中,要让学生掌握快速合理的防守脚步移动技术并非易事,笔者结合多年的教学经验,将篮球运动中防守脚步移动技术存在的问题及对策梳理成文,与大家探讨,希望各位同行批评、指正。 相似文献
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前言篮球比赛的观察结果表明,短距离防守滑步、撤步移动速度是篮球运动员完成防守任务所须具备的一种重要的防守移动速度。滑步、撤步步法是运动员在防守中运用最为广泛的移动步法,尤其是在防守持球队员短兵相接的激烈争夺中,其步法的运用更为常见。本文试通过分析少年女子篮球运动员短距离防守滑步、撤步移动速度与防守能力的关系,少年女子篮球运动员短距离防守滑步、撤步移动速度发展的特点及影响少年女子篮球运 相似文献
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一、转身富有攻击性转身,是攻防诸多技术中,被广泛运用的一种脚步移动,是篮球比赛中,队员改变身体方向和位置的技术。它有前转身、后转身之分而具有选择性和灵活性;它动作突然,能造成出其不意的效果,因而具有攻击性。尤其在当今篮球比赛,攻守日益激烈、在胶着的抗衡中,转身就更显出了它的作用和威力。防守时运用转身,可以抢占有利位置;进攻 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