Does modality matter? A latent profile and transition analysis of sedentary behaviours among school-aged youth: The UP&DOWN study

ABSTRACT

The aims of this study were to identify profiles of sedentary behaviour (SB) patterns, based on leisure-time self-reported SB modalities (screen, educative, social, and relaxing) and to evaluate changes in these profiles over 2 years among Spanish youth aged 8–18 years. Latent profile analysis (LPA), a data-driven analytic approach, was used to identify groups of boys and girls (n = 1553; 48% girls; mean±SD age: 12.56 ± 2.49 y) with distinct SB profiles using the SB modalities (time/d) as input variables. Latent transition analysis, an extension of LPA that uses longitudinal data, was used to analyse 2-year changes in these profiles. At baseline, four and three SB profiles were found among boys (labelled: screen, educative, social, and relaxing) and girls (labelled: screen/social, educative, and relaxing), respectively. Overall, more girls (range: 48%-67%) had the same profile over time, than boys (40%-52%). Participants with a screen or relaxing SB profile at baseline were more likely to have an educative profile after 2 years. Youth with a social and an educative SB profile at baseline were more likely to transition to profiles characterized by higher screen and social SB, respectively. Using a novel and person-centered approach, this study identified gender-specific SB profiles that were moderately stable over time.     

美国体育小镇的运行机制及其对中国的启示

体育是美国人生活中不可或缺的一部分，发达的体育文化为美国小镇体育的繁荣奠定了基础。研究以美国体育小镇为对象，运用文献资料、实地考察、逻辑分析及ArcGIS地理信息绘图等方法和技术对美国体育小镇进行了研究。结果表明：美国体育小镇的布局属非均匀化发展，存在东强西弱，南强北弱的特点且表现出"马太效应"。进而从社会学的角度分析了美国体育小镇运行的外部环境和内在动力机制，并以典型案例对体育小镇运行特点进行了剖析。建议我国体育小镇的建设应从目标引领、政策驱动、环境支持、形成正反馈循环和塑造灵魂等方面思考以推动体育小镇的建设。     

The effect of number of siblings and birth order on educational attainment: Empirical Evidence from Chinese General Social Survey

Data from China demonstrate that the effect of the number of siblings on education is restricted by many factors, such as children’s gender, urban or rural household registration, whether there is only one child, the birth order of children within the family, and parents’ status. Chinese families have significant preferences for the eldest son and the youngest son. Moreover, research based on the natural experiment and instrumental variable approach suggests that market-oriented reform of education has increased the cost of family education expenditures since China’s reform and opening up, which further aggravates the negative impact on education of having many siblings in an urban setting.     

根基文化与体育文化起源

模糊性是体育文化起源存在的客观属性 ,它可通过中介过渡的方法来解决当前体育文化起源的悖论。文中用新石器时代的镂孔陶球为实例 ,演证了这种中介过渡 (即意识物化 )的方法 ,并提出了几点讨论意见。     

国外优秀运动员退役后的角色转换:理论与实践

较全面地介绍了国外运动心理学在优秀运动员退役后角色转换及其后人生发展领域内的理论研究及这些理论在实践中的应用情况。为我国运动心理学今后在这方面的深入研究以及竞技体育体制改革实践提供借鉴。     

论组织中的参与式决策

参与式决策注重以人为本,支持个人创新,强调组织成员的作用和潜能得到最大限度的发挥。作为现代组织管理的一种重要方式,参与式决策不仅能对组织成员产生激励作用,也能为组织目标的实现提供保证。     

教育改革新形势下体育教师教育教学观念的转变

体育教师教育教学观念的转变是实现学校体育教育教学目标的关键,也是当前教育政策新形势下对体育教师提出的较为迫切的任务。对体育教师教育观念改变、更新的必要性与迫切性及实施观念转变更新的方法、途径,以及教育教学观急需改变的具体内容进行了讨论。     

发表偏倚的原因、后果与预防研究

从4个方面对发表偏倚这一现象进行了研究: 1)发表偏倚的定义;2)发表偏倚产生的原因以及作者、编审者、资助者在选择性出版研究结果中所起的作用;3)发表偏倚的后果;4)发表偏倚的多项预防措施.     

Pupil participation: the NASEN policy

NASEN is to be congratulated for developing a Policy on Pupil Participation (NASEN, 2004). The importance of developing this practice has been increasingly recognised over recent years by policy makers, practitioners and researchers. In this short article I shall address some of the issues that the development of such a policy raises. Although generally welcoming NASEN's initiatives and similar actions by other organizations, I consider it important also to review the issue more broadly.     

中国体育产业化过程中的政府职能转变

以重申体育产业化过程中政府职能转变必要性为理论前提,分析体育产业化进程中政府职能转变存在的问题及"错位"和"缺位"现象;讨论出现这些问题的原因;指出实现政府职能转变的条件.