排球上旋球击打类技术技能迁移教学模式初探

排球运动中的正面扣球、正面上手大力发球和跳发球及打防的击打手法,从动作结构分析,都具有运用上旋球手法击打球的共同特点,属于同类技术。挥臂击球是该类技术的关键环节,上旋球手法在这类技术中起着决定性作用。为摸索上旋球击打类技术的有效教学途径.研究设计了一种新的教学模式。该模式紧扣挥臂击球环节,采用集中教学与分散教学相结合,重点抓与常抓不懈相结合的教学方法,加强上旋球手法教学。在学生掌握正确的击打手法基础上,再进一步学习扣球、发球和打防。具体作法可归纳为:(1)在教学指导思想上,把上旋球手法与正传、正垫摆在同等重要位置,进行专门教学。(2)在教学进度安排上,上旋球手法与正传、正垫同步进行。(3)利用课的准备活动时间,适当安排一些上旋球手法练习,做到常抓不懈。(4)运用技评和打     

排球击打类技术运用技能迁移理论教学模式研究

排球运动中的正面扣球、正面大力发球和打垫球等击打手法，从动作结构分析，都具有运用上旋球手法击打球的共同特点，属于同类技术。挥臂击球是该类技术的关键环节，上旋球手法在这类技术中起着决定性作用。通过运用技能迁移教学模式，较好地解决了教学难点，即挥臂击球环节。为进一步掌握此类技能奠定了技术基础，缩短了这类技术的学习时间，收到事半功倍的教学效果。     

排球击打类技术运用技能迁移理论教学模式研究

排球运动中的正面扣球、正面大力发球和打垫球等击打手法,从动作结构分析,都具有运用上旋球手法击打球的共同特点,属于同类技术。挥臂击球是该类技术的关键环节,上旋球手法在这类技术中起着决定性作用。通过运用技能迁移教学模式,较好地解决了教学难点,即挥臂击球环节。为进一步掌握此类技能奠定了技术基础,缩短了这类技术的学习时间,收到事半功倍的教学效果。     

排球击打类技术运用技能迁移理论教学模式研究

排球运动中的正面扣球、正面大力发球和打垫球等击打手法,从动作结构分析,都具有运用上旋球手法击打球的共同特点,属于同类技术.挥臂击球是该类技术的关键环节,上旋球手法在这类技术中起着决定性作用.通过运用技能迁移教学模式,较好地解决了教学难点,即挥臂击球环节.为进一步掌握此类技能奠定了技术基础,缩短了这类技术的学习时间,收到事半功倍的教学效果.     

网球线推荐2011

RPM Blast 此款网线是专为高级别球手而设计的具有产生爆炸性旋转力的网球线。八角形的网线结构．力量型的共聚酯网线材料使其具有非常好的上旋性和独特的球感。难怪它被纳达尔、特松加和斯托瑟所选用。     

横板选手的钩子发球

房胤池使用心得： 发侧上旋短球 1、发短球时重心要充分压低。球不用抛得太高,但一定要符合标准高度,而且在球的运动过程中,身体重心最好有一个起伏移动,这样能够辅助发力。2、准备击球时,抛球手要能够让开,避免遮挡违规。当球落到离球台还有5、6公分时击球,如果想要把球发短,可以把出球的一跳落点控制得离球网更近一些。3、发侧上旋时,尽量接触球的中部位置,以撞击的力量为主。出手之后可以做一些假动作,起到迷惑对手的作用。     

美国NG GEAR(安格)品牌与网线高手

近期，一个并不耳熟的美国品牌——ＮＧ　Ｇｅａｒ安格）已步入网球产品市场。作为研发，制造网线和穿线机的“创业板”上市品牌，其崭新的网线制造理念和穿线机的高科技性能，正向传统的网线领域发起强劲冲击。那么，这个新世纪出现的“网线高手”，会向人们展示什么呢？网线——ＮＧ　Ｇｅａｒ（安格）品牌的网线仍以合成线为主，有比赛发力型，提高型、上旋球手型、休闲舒适型等多款网线。完备的系列体现出成熟的市场定位，这些系列适合各种级别和不同类型打法的球手选择使用。其中以新开发出的子母线系列最具世界水准，根据不同网线的材…     

乱点“甜点”

凡是接触网球有一段时间的人士都知道球拍上有一个称之“甜点”的区域,其位置有高有低,视球拍的性能而定。所谓“甜点”就是说这一区域是整个球拍上击球感觉最舒服的一个点,换一个说法就是球手如果用这“甜点”来击球就会产生最佳的效果。原因是球在“甜点”处接触球拍时能够最大幅度地深入网床,接收球的冲击力,再反弹出去,理论上球速就是这样产生出来的。 近年来我发觉国内很多专业球手并非采用甜点来击球,而是采用球拍的中线点与拍拒之间的位置来台球,而他们的解释是这样可以产生更多的上旋。我最早发现这情况在1996年,当时看到四川省队的刘莉就是采用这方法打球,还以为只是个别球员对网球的误解,并没有放在心上,但经过最近两年,特别是最近的大半年的观察才发现很     

排球基本技术教学口诀

正面上手发飘球球抛右侧右臂抬,右转胸腹伸展开。全掌推压呈上旋,击准部位是关键。 大力跳发球球抛前方三四米,顺势起跳快摆臂。收腹转体击准球,全掌推压呈上旋。 垫球屈膝抱拳迎来球,含胸收腹臂旋夹。前伸压腕球下插,蹬腿跟腰肩放松。 传球对正来球稍蹲势,勺形手势额上迎。蹬地伸膝并伸臂,指腕弹球力适当。 扣球助跑起跳体腾空,引臂转体成反弓。挥臂收腹推压甩,击球叮咚人缓冲。 拦网选好位置稍半蹲,适时起跳臂高伸。封住来球指腕紧,落地缓冲接动作。排球基本技术教学口诀@冯璟$甘肃庆阳西峰第三中学~~     

体感高尔夫，运动新体验

室内进行时室内高尔夫是将室外真实的球场汇集设计到一套软件系统中,通过投影机投影展现在球手面前,画面显视出与真实球场一样的视觉感观,球手挥杆向幕布中的球场击球,与真实击球一样,通过检测器对球手击出的球的飞行数据进行采集分析,并实时将所击出的球的实际飞行轨迹在投影幕布中显视出来,飞行高度,角度,距离,弹跳,与真实的球场打球...     

Carbohydrate ingestion improves endurance performance during a 1h simulated cycling time trial

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.     

Science and medicine of rowing: A review

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.     

我国体育市场管理法规研究

采用调查法和比较法对全国体育市场立法和管理现状进行调查,对部分较早出台并有一定代表性的省市的体育市场管理法规的立法和管理情况进行了研究,提出了体育市场管理立法和管理的原则、基本程序、措施及其一般模式,为规范全国体育市场管理提供参考依据。     

重新认识体育的社会关联

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。     

上海社区体育竞赛参与者的特点探析

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。     

对全面把握游泳训练环节的探讨

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。     

我国优秀游泳运动员出发技术辅助训练的研究

为改进我国优秀游泳运动员的出发技术,采用观测和实验方法,通过拍摄运动员陆上和水下出发技术录像以及出发计时,对出发技术进行运动生物力学诊断和分析。在此基础上,根据运动员自身特点和不同泳姿提出相应的入水启动方式,并研制出发训练辅助器材,对出发预备姿势、腾起角度以及飞行远度和入水角进行控制。实践证明:这是一种快捷、有效的出发技术辅助训练方法。     

运动性呼吸肌疲劳与耐力性项目的运动能力

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.     

Identifying home advantage in international tennis and golf tournaments

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.     

对欧洲足球技战术发展趋势的思考

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。