Pacing profiles and tactical behaviors of elite runners

来源 :运动与健康科学(英文版) | 被引量 : 0次 | 上传用户:nathon_zhwang
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The pacing behaviors used by elite athletes differ among individual sports, necessitating the study of sport-specific pacing profiles. Additionally, pacing behaviors adopted by elite runners differ depending on race distance. An“all-out”strategy, characterized by initial rapid acceleration and reduction in speed in the later stages, is observed during 100 m and 200 m events;400 m runners also display positive pacing patterns, which is characterized by a reduction in speed throughout the race. Similarly, 800 m runners typically adopt a positive pacing strategy during paced“meet”races. However, during championship races, depending on the tactical approaches used by dominant athletes, pacing can be either positive or negative (characterized by an increase in speed throughout). A U-shaped pacing strategy (characterized by a faster start and end than during the middle part of the race) is evident during world record performances at meet races in 1500 m, 5000 m, and 10,000 m events. Although a parabolic J-shaped pacing profile (in which the start is faster than the middle part of the race but is slower than the endspurt) can be observed during championship 1500 m races, a negative pacing strategy with microvariations of pace is adopted by 5000 m and 10,000 m runners in championship races. Major cross country and marathon championship races are characterized by a positive pacing strategy;whereas a U-shaped pacing strategy, which is the result of a fast endspurt, is adopted by 3000 m steeplechasers and half marathoners. In contrast, recent world record marathon performances have been characterized by even pacing, which emphasizes the differences between championship and meet races at distances longer than 800 m. Studies reviewed suggest further recommendations for athletes. Throughout the whole race, 800 m runners should avoid running wide on the bends. In turn, during major championship events, 1500 m, 5000 m, and 10,000 m runners should try to run close to the inside of the track as much as possible during the decisive stages of the race when the speed is high. Staying within the leading positions during the last lap is recommended to optimize finishing position during 1500 m and 5000 m major championship races. Athletes with more modest aims than winning a medal at major championships are advised to adopt a realistic pace during the initial stages of long-distance races and stay within a pack of runners. Coaches of elite athletes should take into account the observed difference in pacing profiles adopted in meet races vs. those used in championship races:fast times achieved during races with the help of one or more pacemakers are not necessarily replicated in winner-takes-all championship races, where pace varies substantially. Although existing studies examining pacing characteristics in elite runners through an observational approach provide highly ecologically valid performance data, they provide little information regarding the underpinning mechanisms that explain the behaviors shown. Therefore, further research is needed in order to make a meaningful impact on the discipline. Researchers should design and conduct interventions that enable athletes to carefully choose strategies that are not influenced by poor decisions made by other competitors, allowing these athletes to develop more optimal and successful behaviors.
其他文献
文化意识是人们自觉认识文化的活动,是人们在文化实践过程中,对所在文化环境和文化精神生活的理解.对我国的学生来说,英语是一门外语,再加上中西方文化具有明显的差异,给学生的英语学习造成了较大的困难,因此,学生需要了解和掌握一些英语文化知识.具体来说,学生应具备的英语文化意识主要是对英语国家的风俗习惯、风土人情、生活习惯、行为规范、思维方式、文学艺术、历史地理等有一定的了解.现行的初中英语教材中,很多文章的内容包含一定的文化因素,如果学生仍用汉语的思维来学习和理解英语,势必会影响他们的学习效果.因此,在初中英语
期刊
英语是一门具有工具性和人文性双重属性的课程.从人文角度看,英语教学承担对学生综合人文素养的培养,即要在培养学生语言运用能力的同时,还要对学生进行一定的德育渗透,以帮助学生更好的理解、鉴赏并传承中外优秀文化.因此在教学中,教师应当重视对学生家国情怀的培养,以坚定文化自信,使学生成为具备爱国主义精神、拥有良好的思想品德和正确人生观、价值观的新一代青年.那么在实际教学中,教师该如何有效的培养学生的家国情怀呢?
期刊
词汇是学习一门语言的基础,在语言学科中占据重要地位.小学英语教师必须重视英语词汇知识的高效教学,保障学生词汇记忆、理解的准确性和全面性,为学生英语认知能力提升、英语综合素养发展提供有力支撑.创设词汇教学情境的教学方式,能够提高英语词汇呈现的生动性、趣味性,激活学生英语词汇学习兴趣,延展学生英语词汇学习思维深度,是提高学生英语词汇学习效果的有效路径.教师加快教学观念转变,正确认识情境创设在词汇教学中的独特教学优势,可以从以下几方面切入词汇教学情境的多元创设.
期刊
英语活动课的开展能够为初中英语的教学注入更多生机与活力.在活动课中,学生可灵活运用所学知识,其人际交往能力和表达能力都会得到极大提升.微课是一种现代化的教学方法,可让教学主题更加明确,操作也较为简单.因此,教师可精心设计微课,将其应用到课前预习、课堂教学中,通过完整的教学过程,最终实现学生英语素养的稳步提升.
期刊
随着社会现代化教育改革创新的发展,对于高中英语阅读课的教学模式和教学目标的改革有了更多的创新.在新的教育指标的要求下,越来越多的高中英语阅读课的教学方式都发生了改变,有了突破性的进步,尤其是现在的高中英语阅读课要求对学生进行自主探究的教学模式,从更多的角度出发,为全面提高学生的英语阅读的能力水平,做出了周密的教学策略的探究.但是,现在的高中英语的自主探究教学还处于不成熟的发展阶段,还需要不断地进行探索和分析新的教学模式的教学实践路径.因此,本文将以《Marco Polo》为例,对高中英语阅读的自主探究的教
期刊
由于新冠疫情爆发,全国各地推出了停校停课的政策,但是学生的学业不能荒废,学习活动仍要进行.在这样的背景下,我们开始了“停课不停学”的线上教育活动.然而,由于初中生普遍适应了班级学习的环境氛围,所以在接受线上教育指导期间,他们的学习效率和质量普遍偏低.甚至,我发现很多学生在线上课堂中只是滥竽充数,并未认真听讲.在他们看来,所谓线上教育不过是长假期间的一个特殊的小活动.另外,线上教育也存在固有的缺陷,比如教师无法及时观察每一位学生的学习状态;学生无法第一时间向教师提出自己的困惑;有些课堂中常用的教学模式在线上
期刊
在世纪之交的近20年间,学术界曾经对中国音乐考古学这一学科的名称、归属,甚至是否称其为一门学科产生过热烈的讨论:它是音乐史学的一个部分还是考古学的一个分支?到底是“音乐考古”还是“考古音乐”?或者充其量只能称为乐器考古?中国音乐考古学多被认为是一门年轻的学科,然而,其看似历史短暂,实则年代久远。20世纪30年代初,刘半农等对清宫古乐器的测音研究成为中国音乐考古学的萌芽;20世纪五六十年代,在史学发
期刊
在目前的英语教材中,虽然教学的内容中有着各种鲜活的话题,内容也更加贴近生活,但是教材只要已出版,便需要使用好几年的时候才会改版,而当初那些鲜活的话题放在几年后的今天来看也显得比较陈旧了.而且,学生对于英语的接受能力与教材的难易度之间也会存在一些基本的矛盾,而教材的语料库以及词汇量到底能不能真正满足学生对于能力提升的需求则成为不少教师都关注的问题.因此,为了活用教材,用好教材,教师需要在活用教材的基础上开发课程的资源,让拓展性的资源成为拓展学生视野的主要内容.而报刊资源则是一种能够在话题上尽量鲜活,且时效性
期刊
教育信息化给中小学教育教学方式带来了翻天覆地的改变,让我们的教学变得更加高效、高质与个性.小学英语阅读教学是学生提升综合素养的重要途径,优质阅读课堂教学氛围的形成往往与教师的教学策略有着密不可分的关系.在小学的英语课堂教学中,教师要善于利用手中优质的资源,为学生营造良好的课堂氛围,小学英语阅读注重单词情境运用,因此,在教学实践中,教师要善于利用多媒体为学生营造积极有趣的英语学习氛围.
期刊
李淑琴(下文简称:李):温老师您好!疫情之下来上海进行我们的访谈,成了一件并不容易的事情,所以格外高兴今天能和您谈您的创作和上音的音乐周。我先跟您介绍一下我们项目的大致情况。这是属于我们音乐学研究所2016年度的重大项目,一共有三个,一个是《中国专业音乐人才培养未来发展研究》,负责人是宋瑾教授,一个是《中国专业音乐理论研究与应用未来发展》,这个是王次炤教授负责,我负责的是《中国专业音乐创作与传播未
期刊