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周欣 《中国体育(中英文版)》2004,(11)
超级自信都说运动员的脾气和他或她的教练一样。蛙后罗雪娟已经加冕了奥运会和世锦赛的桂冠,她的性格标签不少:自信、霸气、心直口快、说话语不惊人誓不休……而“幕后英雄”张亚东其实也是如此的性格,只是他从来都很低调,不肯承认自己的“野心”。在雅典奥运会开赛之前,罗雪娟的女子100米蛙泳夺冠形势异常严峻:澳大利亚琼斯和美国名将阿曼达先后改写了200米蛙泳的世界纪录,前者正是罗雪娟 相似文献
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1997年11月7日,上午9点20分,也就是纽约尼克斯队和洛杉研湖人队比赛的前几个小时,拉里·约翰逊来到“狭长海岸基因诊所”(位于加里福尼亚)。他穿着尼克斯队的练习队服,从那辆黑色加长的豪华轿车中钻出来,缓慢地步人诊所。在那里有六个人在等着他:劳拉·塔特,28岁,来自洛杉矾的一名时装模特,她已经和约翰逊打了十五个月的官司;劳拉的父亲丹尼斯是她的律师;一个只有三个月大名字叫泰勒·塔特·约翰逊的女婴,此刻安静地躺在劳拉的怀里,泰勒从诞生之日起就被一种难堪不安的气氛包围着。在诊所的实验室里,一名工作人员正在准备做… 相似文献
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翻开我的实寄封邮册,里面有一枚十分特殊的实寄封。这是一件挂号信封,1989年11月29日由湖南长沙市2支局寄往北京。封上并没贴邮票,而是贴了一枚用绿色油墨印制的集号码、地名、重量、邮资为一体的“纸包挂号标签”。寄达地、重量、邮资均为手写。这种标签属于何种邮品?查有关资料并无答案。记得当时笔者是从长沙市集邮公司函购了几套十大元帅和十大将军明信片,难道是“印刷品”挂号?为什么不贴邮票和加盖“印刷品”副戳呢?还望知情者指点迷津。 相似文献
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《体育健康知识画刊》2012,(4):26-27
阿曼达·比尔德,游泳运动员,1981年10月29日出生于美国加利福利亚洲。参加过三次奥运会的美国蛙泳名将阿曼达·比尔德号称泳坛性感的代名词。她拥有一张迷人的脸以及如模特般完美的身材。 相似文献
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这是一个有趣的现象——一边是浮标理论的“春秋时代”,评说分纭:一边是浮标的品牌大战,制造业进入“战国时代”。在各种科学名词成了标签,到处乱贴以及制造业用不同理念.钓鱼人用不同感受解释浮标而冲突不断的时候。“混乱”在所难免。 相似文献
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《为什么贴两种挂号签条?》一解释了“128条形码”由分拣中心所加,但没有交代为什么要加贴这枚签条(参见050346)。按《国内邮件处理规则》,窗口营业员收寄挂号信时在信封正面贴用“邮1101”条形码标签或计算机打印的条形码标签,并将相关收据交收件人。分拣中心根据计算机网络汇总的挂号信数据进行抽样,稽查,核对,并随机打印相关的“128条形码”粘贴在相关单式上,由于这项操作没有严格的具体规定,有人就随意地贴在信封上,形成贴两种条形码标签的挂号信。 相似文献
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最近,笔者收藏到一套宿松河塌图案式邮政附加费的全套挂号实寄封,非常罕见。其中一枚封销“安徽宿松/1993.6.15.8/246512”日戳,贴“挂079宿松河塌”标签(图1),其余三枚封销“安徽宿松/1993.8.16.8/246512”日戳,分别贴“挂311(549、674)宿松河塌”标签(图2、3、4),而且在每个信封中均有对应序号的挂号收据(图5)。这套封的出现,也无可辩驳地否定了“宿松河塌图案式邮政附加费无挂号实寄封”的说法。 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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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
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本文在专家访谈、问卷调查、数理统计和文献资料分析的基础上,探析了上海社区体育竞赛参与者的特点、参与者对社区体育赛事运作管理的看法等问题。在此基础上从引进社区体育赛事的志愿者、整合社区体育赛事的各种资源、开发社区体育竞赛的无形资产、组建非营利性的专业团队、规范社区体育赛事的服务管理等方面提出了进一步满足上海社区居民日益增长的体育竞赛参赛需求的对策与措施。 相似文献
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对全面把握游泳训练环节的探讨 总被引:4,自引:0,他引:4
从系统观点出发,结合训练实践,对全面把握游泳训练环节进行探讨。认为应强化非智力因素在运动员多年训练中的作用,在育材全过程中不断选材,从整体上把握动态训练的全过程,把培养高水平运动员的整个过程置于一个严格的科学控制之下。 相似文献
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影响和限制耐力性运动项目的成绩的生理因素是复杂的和多方面的,取决于训练的强度和运动成绩.大强度持续性运动可导致呼吸肌疲劳.运动性呼吸疲劳可能在决定运动耐量方面起到关键的作用:一方面通过直接影响运动肌力量的生成(外周疲劳),另一方面,通过肢体用力自感不安反馈引起工作肌运动单位输出功率下降(中枢疲劳).对呼吸肌进行训练,可能有助于提高耐力性项目的运动成绩. 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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结合欧洲足球技战术的发展特点,就鲁能泰山足球队的体能训练、技术训练、防守阵型、进攻方式、定位球、职业态度、球星培养等诸方面所存在的不足进行了分析,提出相应的改进意见。 相似文献