False-performance feedback does not affect punching forces and pacing of elite boxers     

Israel Halperin  Dale W. Chapman  Kevin G. Thompson  Chris Abbiss 《Journal of sports sciences》2019,37(1):59-66

Prior research indicates that providing participants with positive augmented feedback tends to enhance motor learning and performance, whereas the opposite occurs with negative feedback. However, the majority of studies were conducted with untrained participants performing unfamiliar motor tasks and so it remains unclear if elite athletes completing familiar tasks respond in a similar fashion. Thus, this study investigated the effects of three different versions of false-performance feedback on punching force (N), pacing (force over time) and ratings of perceived exertion (RPE) in 15 elite amateur male boxers. Athletes completed a simulated boxing bout consisting of three rounds with 84 maximal effort punches delivered to a punching integrator on four separate days. Day one was a familiarisation session in which no feedback was provided. In the following three days athletes randomly received false-positive, false-negative and false-neutral feedback on their punching performance between each round. No statistical or meaningful differences were observed in punching forces, pacing or RPE between conditions (P > 0.05; ≤ 2%). These null results could stem from the elite status of the athletes involved, the focus on performance rather than learning, or they may indicate that false feedback has a less potent effect on performance than previously thought.  相似文献   

Body composition differences by age and playing standard in male rugby union and rugby league: A systematic review and meta-analysis     

Tom Geeson-Brown  Ben Jones  Kevin Till  Sarah Chantler  Kevin Deighton 《Journal of sports sciences》2020,38(19):2161-2176

ABSTRACT

This systematic review and meta-analysis aimed to determine differences in body compositionn between playing standard and age in male rugby union and rugby league athletes. The MOOSE (Meta-analysis of Observational Studies in Epidemiology) guidelines for design, implementation, and reporting were followed. Studies were required to be in male rugby union or league and have body composition as the primary or secondary outcome. Data was required to be presented separately for positional groups and body composition presented as whole-body. A systematic search was performed in PubMed, Cochrane Library, MEDLINE, SPORTDiscus, and CINHAHL via EBSCOhost. 57 studies were included for meta-analysis. Results highlighted significantly higher fat-free mass in senior elite than senior sub-elite or junior elite athletes for all RU and RL forwards. Small and non-significant differences were found in fat mass between rugby union playing standards and age categories. Rugby league senior elite forwards had less fat mass than junior elite forwards. Practitioners should prioritise training and nutritional strategies that maximise fat-free mass development, especially in junior elite cohorts.  相似文献   

‘Sport and song go together …’ A personal reflection on the art of the sporting balladeer     

Keith Gregson 《Sport in Society》2021,24(1):88-98

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竞技攀岩溯源与演变研究     

李元  朱倍锋 《武汉体育学院学报》2020,54(11):87-93

竞技攀岩作为新晋奥运项目，探究其起源和演变过程可为我国竞技攀岩的发展提供借鉴、指导及理论缘由。采用文献资料研究和逻辑分析方法，探讨了竞技攀岩的概念，分析了竞技攀岩诞生的装备和技术基础、社会文化背景，以及三个发展阶段的主要特征。研究表明，竞技攀岩是攀岩运动中符合现代竞技体育特征的部分，是攀岩运动"竞技体育化"的结果；器械装备升级提供的技术基础和战后复兴的历史背景，共同促成了竞技攀岩在苏联的诞生；竞技攀岩的演变经历了苏联时期的普及化与国际化尝试、UIAA主导的竞技攀岩国际管理体系与赛事体系建设、IFSC引领的奥运发展新时期三个阶段；竞技攀岩的后奥运时代将迎来前所未有的发展契机。  相似文献   

Validation of the swimming competence questionnaire for children     

Derwin K. C. Chan  Alfred Sing Yeung Lee  Duncan J. Macfarlane  Martin S. Hagger  Kyra Hamilton 《Journal of sports sciences》2020,38(14):1666-1673

ABSTRACT

Two studies were employed to test the reliability and validity of the Swimming Competence Questionnaire (SCQ) among primary school children. Study 1 was a cross-sectional survey in 4959 primary school children. Study 2 was a pre-post-test quasi-experiment among 1609 primary school children who underwent a 20-lesson learn-to-swim programme. In Study 1, exploratory structural equation modelling revealed excellent goodness-of-fit and scale reliability for a two-factor model comprising distance and skill factors, which supported the construct and convergent validity. SCQ scores were significantly and positively correlated with swimming outcomes (i.e., self-efficacy, intention, swimming frequency), which supported SCQ’s concurrent and criterion validity. Average variance extracted for the SCQ factors exceeded cut-off criteria supporting discriminant validity. In Study 2, pre-test SCQ scores correlated significantly and positively with the SCQ scores, self-efficacy, intention, and swimming frequency at post-test, which supported SCQ’s test-retest reliability and predictive validity. Positive intraclass correlation between SCQ scores and coach ratings at post-test provided evidence for SCQ’s inter-rater reliability. SCQ scores significantly improved at post-test, which supported SCQ’s ecological validity. In conclusion, findings indicate that the SCQ is a valid and reliable measure to assess primary school children’s swimming competence, in terms of swimming distance and basic water survival skills.  相似文献   

多媒体教学背景下高校公体教学改革探究     

刘露 《体育科技文献通报》2020,(6):90-91

多媒体技术对于教学上的应用,为公共体育教学带来了新的改革。在教学过程中,如何更好的利用多媒体技术教学的优势与公共体育教学相结合,提升高校公体课的成绩,是本文研究的重点。文章通过对于两个班级进行试验研究,以期对多媒体技术在高校公共体育教学上的应用,提供一定的理论参考依据。  相似文献   

体育装备高科技化的利与弊     

黄国强 《中国现代教育装备》2011,(11):43-44,48

科技的进步如何促进体育的发展,又如何威胁体育竞赛的公平性,笔者从体育装备科技化对体育运动的影响作辩证思考。  相似文献   

昆明市商业健身场所女性体育消费调查研究     

吴华椅  黄金伟 《读与写:教育教学刊》2011,(6):70+208

本文主要采用问卷调查法、文献资料法和数据统计法等方法。对昆明市商业健身场所的女性消费者进行基本情况调查、消费动机以及获取健身消费信息途径等调查分析。目的在于为女性消费者提供参考和指导、为商业健身场所提供数据支持。  相似文献   

浅谈体育舞蹈的美学价值     

江芸  郑鸿 《闽江学院学报》2001,(2)

本文从体育与美学关系入手 ,剖析体育舞蹈美学价值 ,提出体育舞蹈教学要在美的情境中开展 ,教学过程应贯穿心灵美教育。  相似文献   

关于绝热饱和温度的讨论     

欧阳华勇 《南通职业大学学报》2004,18(4):88-90

本文针对学生在《化工原理》学习中对绝热饱和温度概念的错误理解，通过对热质同时传递过程的分析、讨论，阐述了稳定状态和瞬时饱和状态的区别及绝热增湿过程的特点，并给出绝热饱和温度的合理定义。  相似文献