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运用文献资料法、录像观察法、乒乓球双打技战术8轮次3段法等方法对东京奥运会乒乓球混双决赛中日双方运动员的技战术特征进行对比分析，结果显示：(1)伊藤美诚发-刘诗雯接、水谷隼发-刘诗雯接和许昕发-伊藤美诚接轮次是许昕/刘诗雯在本场比赛的薄弱环节；(2)许昕/刘诗雯与水谷隼/伊藤美诚在发抢段的得分率均处于较高水平，得分率分别为75%和63.3%;(3)许昕/刘诗雯接抢段的得分率为52.5%,高于水谷隼/伊藤美诚；(4)在相持段，许昕/刘诗雯的得分率36.4%评估为不及格，使用率43.3%为较高，对比水谷隼/伊藤美诚的得分率47.4%,相持段高使用率、低得分率是许昕/刘诗雯失利的主要因素。 相似文献
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综合运用录像观察法、4段指标评估法等研究方法,对樊振东在2021休斯顿世乒赛1/4决赛、半决赛和决赛的技战术进行整理和分析。结果表明：樊振东4段得分较为均衡,整体实力较高,发抢段与相持Ⅰ段的得分率被评估为“优”,接抢段的使用率为最高,得分率被评估为“1优2良”。发球轮的环节,相持Ⅰ段为主要得分手段;接抢段方面,樊振东在第4板积极主动;相持Ⅰ段的得分率较高,相持Ⅱ段发挥较为不稳定,得分率出现不及格情况。 相似文献
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运用录像观察、比较分析、8轮次3段等研究方法，对许昕和刘诗雯在东京奥运会乒乓球混双决赛中失利的技战术原因进行探讨，研究表明：昕雯组合在决赛中失利的主要原因是发抢段的使用率和相持段的得分率在整体上呈现双低特征；8轮次中接发球轮次明显劣势于发球轮次；发抢段中许昕-伊藤美诚和许昕-水谷隼2轮次的使用频数呈逐步下降趋势；接抢段中水谷隼-许昕和伊藤美诚-刘诗雯2轮次均未能摆脱日本组合的强力压制；相持段8轮次中除了许昕-水谷隼轮次外，其余7轮次均呈明显劣势。 相似文献
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运用“三段指标法”对第15届亚运会女子团体半决赛及决赛的技战术进行统计，分析比赛中运动员在发抢段、接抢段和相持球的技战术运用特点。认为在相关规则修改后，在乒乓球技术研究中应从各方面对三段指标法进行研究与尝试。 相似文献
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运用三段技术统计法对樊振东在2014年亚洲杯乒乓球男单决赛中的发球抢攻段、接发球抢攻段和相持段的技战术运用进行统计并分析,探讨樊振东在技战术运用上的特点,从技战术的角度分析比赛失利原因。结果表明：樊振东发球后第三板被马龙控制,第三板直接上手机会不多,发球落点节奏变化不明显;接抢段优秀,接发球控制、进攻技术使用比较流畅,积极主动;相持段中发抢段相持球得分好于接抢段相持球技术,相持中反手拉技术使用较多,正手相持技术使用频数较低。 相似文献
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胡静涛 《体育科技文献通报》2011,19(5):37-38
本文通过对柳承敏在第11届＂乒乓球世界杯＂男子单打1/4决赛、半决赛、决赛三场比赛中发球抢攻段、接发球抢攻段和相持段的统计与技战术分析,以期找出其在技战术上的优势与不足,为中国乒乓球队进行针对性训练和在比赛中有效运用技战术提供参考依据。 相似文献
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采用专家访谈法、乒乓球技战术＂三段分析法＂、simi scout视频技战术分析法,对2007年乒乓球世界杯1/4决赛马琳对柳承敏比赛中马琳的反手技术的使用情况进行了定量分析与研究,结果表明马琳本场比赛中反手技术运用的使用频率一般,多集中在第三和第四板,反手技术运用种类全面、线路丰富,在关键分时敢于运用反面拉技术,但整体威胁性不大,得分率较低。 相似文献
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第48届世乒赛王励勤各项技术统计分析与研究 总被引：2，自引：0，他引：2
杨李丽 《哈尔滨体育学院学报》2006,24(1)
通过对48届世界乒乓球锦标赛王励勤在男子单打先后争夺1/16决赛,1/8决赛,1/4决赛,1/2决赛和冠亚军决赛的5场比赛中各项技术的统计与技战术分析,为备战2008年北京奥运会技战术训练提供参考依据。 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