Are the new starting block facilities beneficial for backstroke start performance?     

Karla de Jesus  Kelly de Jesus  J. Arturo Abraldes  Alexandre Igor Araripe Medeiros  Ricardo J. Fernandes  João Paulo Vilas-Boas 《Journal of sports sciences》2016,34(9):871-877

We aimed to analyse the handgrip positioning and the wedge effects on the backstroke start performance and technique. Ten swimmers completed randomly eight 15 m backstroke starts (four with hands on highest horizontal and four on vertical handgrip) performed with and without wedge. One surface and one underwater camera recorded kinematic data. Standardised mean difference (SMD) and 95% confidence intervals (CI) were used. Handgrip positioning did not affect kinematics with and without wedge use. Handgrips horizontally positioned and feet over wedge displayed greater knee angular velocity than without it (SMD = ?0.82; 95% CI: ?1.56, ?0.08). Hands vertically positioned and feet over wedge presented greater take-off angle (SMD = ?0.81; 95% CI: ?1.55, ?0.07), centre of mass (CM) vertical positioning at first water contact (SMD = ?0.97; 95% CI: ?1.87, ?0.07) and CM vertical velocity at CM immersion (SMD = 1.03; 95% CI: 0.08, 1.98) when comparing without wedge use. Swimmers extended the hip previous to the knee and ankle joints, except for the variant with hands vertically positioned without wedge (SMD = 0.75; 95% CI: ?0.03, 1.53). Swimmers should preserve biomechanical advantages achieved during flight with variant with hands vertically positioned and wedge throughout entry and underwater phase.  相似文献   

Feasibility and students' preliminary views on parkour in a group of primary school children     

Javier Fernández-Río  Carlos Suarez 《Physical Education & Sport Pedagogy》2016,21(3):281-294

Background: Adventure education is an instructional model where students participate in adventurous activities to acquire physical, cognitive, and affective skills. It also has strong connections with cooperative learning. Parkour is a fast-growing sport practiced by thousands of youngsters all over the world. The media does not portray it as an educational content, but resourcefulness, maturity, cooperation, and respect are among its basic principles. It also appears to have a direct connection with risk-taking, self-discipline, and autonomy.

Purpose: The purpose of this paper is to assess students' ideas, views, and/or feelings after experiencing a parkour learning unit.

Participants and settings: The research project was conducted in an intact, sixth-grade physical education class in an elementary school located in the northern part of Spain. A total of 26 students with ages ranging between 11 and 12 years (mean age 11.4?±?0.6) participated in the study. There were 14 boys and 12 girls.

Data collection: At the end of the intervention programme, all participating students were asked to ‘Describe your feelings, your thoughts, and your ideas on the parkour learning unit that you just experience in physical education'.

Data analysis: MAXQDA 11, a qualitative software package, was used to assist with data management. All participants' answers were analysed via thematic content analysis and constant comparison.

Findings: Five major categories emerged from data analysis: enjoyment, fear, social skills, problem-solving skills, and integration. Our findings agree with previous researchers who believe that parkour could be considered an educational content due to all the different positive outcomes that it brings to the physical education class. It seems to promote the development of social and problem-solving skills in the students. Both are competences that should be encouraged and fostered in our youngsters. Furthermore, it is considered a fun activity, it promotes students' integration, and it teaches them how to cope with fear.

Conclusion: In contrast to popular views portrayed by the media, the sport of parkour can be a safe, educational content. School cannot turn its back on sports or contents whose popularity is rapidly increasing.  相似文献   

评“汉语征服世界论”     

安希孟 《襄樊学院学报》2005,26(6):62-67

人类语言发展的趋势是从象形文字发展到音文字。汉字至今仍然是世界语言大家庭中的小语种。科学技术和社会科学文献大多数至今仍然是以英语为主。英语也是世界的主要交际语言。语言是存在的家园，也许英语是人类共同存在的可爱家园。也许离开英语，我们的生存不可思议。同英语相比，我们自己的语言文字也许有一些缺点，这并没有使人有不快之处。一个国家有统一的语言文字，同样，全人类世界也会有自己共同的语言文字。目前世界上大多数场合，英语承担着国际通用语言的角色。它起着“让世界冲满爱”的作用。有些外国人学习汉语，这件事在某些人眼中成了弘扬汉语优越论的理由。但其实，他们的目的具有来华商业性质，不能说明在文化和国际外交场合汉语会占统治地位。自然科学和社会科学文献中，英语占主导地位。美国军人人手一册孙子兵法，已被证明是假消息。美国军人学汉语，被说成是汉语风行天下。但是最近的报道是，其目的具有战略性。他们正学习各种东亚语言。中国老一代学者不赞成汉语征服世界。以开阔的胸襟学习英语，表明的是博大胸怀。  相似文献   

从《国语》看战国初期“以”的用法   总被引：1，自引：0，他引：1  

薛安勤 《辽宁师范大学学报(社会科学版)》2001,24(5):69-72

《国语》的语言在一定程度上反映了汉语在上古阶段的某些特征,在语言研究中有着承上启下的作用。笔对《国语》中“以”的用法进行了究尽式的量化统计,在此基础上分析了“以”的一般用法和特殊用法,并总结出辨识动词、介词、连词“以”的几种方法,为研究“以”的发展演变提供点儿原始语料。  相似文献   

浅谈多媒体技术辅助化学教学的作用     

安新文 《西北成人教育学报》2008,(5)

多媒体技术在化学教学中有助于:突破教学难点,加大教学密度;反馈教学成果,优化教学过程:延伸课堂教学。  相似文献   

汉语交际中口语修辞的运用与研究   总被引：1，自引：0，他引：1  

蒋安 《新乡师范高等专科学校学报》2008,22(2)

口语交际是一种复杂的社会现象。口语交际活动的动态性,决定了口语修辞活动的复杂性和综合性。口语修辞活动较之于书面语修辞具有突出的显性特征,口语修辞中语境起着制约、补衬作用,口语修辞活动应符合言语交际的得体性原则。  相似文献   

Interpretation of "Harmonious" in the aesthetic aspects     

An Pengsheng 《山东教育学院学报》2008,23(4)

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民间开发的网上开放教育资源的使用状况与前景预测——以争鸣口才网为例   总被引：1，自引：0，他引：1  

安超 《中国远程教育(综合版)》2008,(8)

本文分析了草根网民自主开发的开放教育资源(以争鸣口才网www.zmkc.com为例)的使用状况,通过与传统课程与教学的比较,探讨网上开放教育资源对网民(学刊者)学习环境要素及教学(学习)流程的影响,并对民间网上开放教育资源的前景进行了预测.  相似文献   

The impact of John Dewey on the teacher education system in Turkey     

Selçuk Uygun 《Asia-Pacific Journal of Teacher Education》2008,36(4):291-307

This study discusses the impact of John Dewey (1859–1952) on Turkey's teacher education system. In so doing, it heavily relies on the commissioned report “The Report and Recommendation on Turkish Education” prepared by Dewey in 1924. This paper documents Dewey's ideas about teacher education in Turkey and analyses their take up in practice. Based on the research findings, it could be argued that Dewey had a considerable impact on the transformation of teacher education system in Turkey. His most visible impact was best observed in the policies and practices in the training of village teachers. The Village Institutes Project, launched in the early 1940s to introduce a model specific to Turkey, was extensively based on Dewey's recommendations. In the Republican Era, Dewey's ideas and thoughts on education have been eagerly observed and implemented by Turkish authorities, who have openly recognised his competence and authority in the field of education. His impact on Turkish education system is still visible as the present policy makers make reference to his works.  相似文献   

The Feasibility and Usability of the Read it Again Dual Language and Literacy Curriculum     

Lillian K. Durán  Brenda K. Gorman  Theresa Kohlmeier  Chase Callard 《Early Childhood Education Journal》2016,44(5):453-461

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