青少年体力活动干预新方式——体感游戏对青少年身体活动的影响分析     

袁川 《湖北体育科技》2016,(9):784-787

体感游戏作为体育运动与电子科技的结合产品,对其在青少年体力活动干预方面的研究有重要意义。研究从体力活动的促进、能量消耗、运动康复、社会价值以及心理效应等方面对体感游戏进行分析,发现体感游戏对青少年体力活动有明显促进作用,能满足其锻炼的需求,且对青少年心理健康具有积极地影响,能作为青少年体力活动干预的有效手段之一。  相似文献   

低温胁迫下镧对水稻种子萌发的影响   总被引：3，自引：0，他引：3  

刘惠娜  钟东方  许良政 《嘉应学院学报》2007,25(3):72-76

以水稻(Oryza sativa)种子为实验材料,研究了不同浓度稀土元素镧浸种对水稻种子低温萌发的影响。结果表明:15℃低温胁迫抑制水稻种子的萌发,浸种期用硝酸镧处理能够提高种子的抗逆性。低浓度((50~250)×10-6mol/L)硝酸镧浸种能提高水稻种子发芽率、发芽势、呼吸速率和过氧化氢酶活性,提高种子抗寒能力,实验发现用硝酸镧处理种子萌发以250×10-6mol/L浓度为最佳,低温胁迫下,发芽率提高9.67%,呼吸速率提高56.25%,过氧化氢酶活性提高1.73%。350×10-6mol/L以上高浓度对水稻种子的萌发无明显影响。  相似文献   

英语课程改革理念探究     

耿霞  王丽华 《焦作大学学报》2003,17(4):103-104

章主要阐述基础教育课程改革所倡导的活动式教学方法的特点和优越性，并探讨了如何在英语教学中采用活动式教学方法。  相似文献   

基于Pro/E的直齿锥齿轮Program参数化造型     

Pei Zhiming) Xu Juan) Lv Huiming) 《石家庄铁路工程职业技术学院学报》2007,(3)

介绍Pro/Engineer的Program参数化造型方法及其程序结构,并且以直齿锥齿轮为实例,详细地介绍Program参数化造型的实现过程。为同类产品实现参数化造型,减少重复劳动,提高设计效率提供一种适用、有效的方法。  相似文献   

智慧城市整体建模技术初探     

邱嘉文 《中国科技资源导刊 (中国信息导报)》2016,(5):35-41

为破解智慧城市分行业垂直构建信息系统带来的信息资源分散整合的难题,本文提出一个新的解决方案, 即运用“分层构建、横向整合、模型聚合、平行演进”的机制,模仿智慧生命体的层次架构对智慧城市进行层次化的建 模设计,使得在现实城市中纵向分布的信息资源,在信息系统的虚拟城市模型中得到横向的大整合,发掘出一项在云 计算和大数据的环境下,可对垂直构建的信息系统进行具有兼容性、诱导性和可演进性的整体架构设计的新技术  相似文献   

Centralising space: the physical education and physical activity experiences of South Asian,Muslim girls     

Annette Stride 《Sport, Education and Society》2016,21(5):677-697

This paper explores the physical education (PE) and physical activity experiences of a group of South Asian, Muslim girls, a group typically marginalised in PE and physical activity research. The study responds to ongoing calls for research to explore across different spaces in young people's lives. Specifically, I draw on a ‘middle-ground’ approach, using Hill Collins' matrix of domination and the notion of intersectionality. These concepts offer the possibility to explore the kinds of settings (physical, social and cultural) in which girls undertake PE and physical activity, how these spaces influence experience and how the girls navigate these spaces. The study is based in a large, urban, co-educational, secondary school in Yorkshire, England (95% of the students are from minority ethnic communities, 91% are Muslim and 63% live in the top 10% most deprived neighbourhoods in the country). Data generation involved three phases: observations, creating research artefacts in focus groups and in-depth interviews. The findings reveal the diverse ways the girls are physically active. They also demonstrate a complexity to their involvement which is contingent upon space, discourses and people. For example, discourses of competition, ability and peers are more significant within PE; whilst family, religion and culture feature beyond this context. The paper concludes by acknowledging the girls' heterogeneity and agency in the ways they strategically navigate spaces in their quest to be physically active on their terms.  相似文献   

A case study on the experiences of university-based Muslim women in physical activity during their studies at one UK higher education institution     

Claire Miles 《Sport, Education and Society》2016,21(5):723-740

The case study explores the experiences of Muslim women in the area of physical activity participation conducted whilst they were studying at one UK University. Previous research in the field indicated that Muslim women can be denied opportunities to participate in areas of sport-related physical activity through multiple factors such as socio-cultural, familial, religious or sporting structural constraints. Despite increased knowledge about the inclusion of Muslim girls in school-based physical education and sport, there is a dearth of literature on Muslim women's experiences post their school years. Informed by socio-cultural theories of the body, identity and embodied cultures, the study focuses on Muslim women's early physical activity experiences, university-based participation patterns and reflections on the influences that shaped their attitudes and beliefs towards such participation. Open-ended questionnaires, 34/50 returned (68%), and 6 in-depth interviews were conducted with volunteers studying a wide range of programmes. Content analysis revealed that values, attitudes and behaviours were largely influenced by the family; prior to university, the women's physical activity experiences were mixed and dependent on family activity patterns and school-based opportunities; university recreational sport-related provision did not cater for the women's Islamic needs denying them opportunities to participate. Religious belief and cultural expectations made a significant contribution to the women's preferences for participation environments that respected their Islamic beliefs.  相似文献   

Validity of Self-Reported Pedometer Steps per Day in College Students     

Brittany Star Overstreet  Scott E. Crouter  George A. Butler  Cary M. Springer  David R. Bassett 《Measurement in physical education and exercise science》2016,20(3):140-145

The purpose of this article was to examine the validity of self-reported pedometer steps/day. Forty-seven participants were provided a New Lifestyles NL-2000 (NL-2000; Lees Summit, MO, USA) pedometer and a physical activity (PA) diary for 3 weeks, but not informed of the data-storing capabilities. For weeks 2 and 3, each participant was given a step goal of 3,000 steps/day above week 1 average. A 2 × 3 repeated measures analysis of variance (ANOVA) was used to examine differences between reported steps/day. Bland–Altman plots assessed the mean bias and limits of agreement between reporting methods. Mean self-reported and NL-2000 steps/day were 9,264 ± 3,555 and 8,971 ± 3,590 steps/day (n = 26, p > .05). Mean biases were 216 ± 1,753 (week 1), –506 ± 1,355 (week 2), and –590 ± 1,360 (week 3) steps/day. Negative mean bias values indicate higher self-reported steps/day. Mean steps/day were similar between recording methods, but large differences were observed among individuals, suggesting self-reported steps/day may be valid for PA research at the population level, but not the individual level.  相似文献   

An Examination and Validation of an Adapted Youth Experience Scale for University Sport     

Scott Rathwell  Bradley W. Young 《Measurement in physical education and exercise science》2016,20(4):208-219

Limited tools assess positive development through university sport. Such a tool was validated in this investigation using two independent samples of Canadian university athletes. In Study 1, 605 athletes completed 99 survey items drawn from the Youth Experience Scale (YES 2.0), and separate a priori measurement models were evaluated (i.e., 99 items, YES 2.0, YES for Sport [YES-S]). Confirmatory factor analysis (CFA) and exploratory structural equation modeling (ESEM) results indicated issues with model fit. Post-hoc modifications improved fit, resulting in a 46-item, 9-factor model with five positive and four negative dimensions. In Study 2, 511 athletes completed the same items. The resultant model was confirmed using both CFA (comparative fit index [CFI] = .911, standardized root mean square residual [SRMR] = .056, root mean square error of approximation [RMSEA] = .040) and ESEM (CFI = .956, SRMR = .023, RMSEA = .034). The resultant University Sport Experience Survey provides a reliable and factorially valid instrument for measuring development in university sport.  相似文献   

Bifactor Approach to Modeling Multidimensionality of Physical Self-Perception Profile     

ChihMing Chung  Hairong Song  Taehun Lee 《Measurement in physical education and exercise science》2016,20(1):1-15

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