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.     

Professional knowledge or motivation? Investigating the role of teachers’ expertise on the quality of technology-enhanced lesson plans

In an expertise study with 94 mathematics teachers varying in their relative teacher expertise (i.e., student teachers, trainee teachers, in-service teachers), we examined effects of teachers' professional knowledge and motivational beliefs on their ability to integrate technology within a lesson plan scenario. Therefore, we assessed teachers' professional knowledge (i.e., content knowledge, pedagogical content knowledge, technological knowledge), and their motivational beliefs (i.e., self-efficacy, utility-value). Furthermore, teachers were asked to develop a lesson plan for introducing the Pythagorean theorem to secondary students. Lesson plans by advanced teachers (i.e., trainee teachers, in-service teachers) comprised higher levels of instructional quality and technology exploitation than the ones of novice teachers (i.e., pre-service teachers). The effect of expertise was mediated by teachers' perceived utility-value of educational technology, but not by their professional knowledge. These findings suggest that teachers’ motivational beliefs play a crucial role for effectively applying technology in mathematics instruction.     

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。     

论学校经营中教育服务产品的性质

随着教育市场的逐步形成，学校经营已经成为可能，为此有必要对学校经营的产品进行重新诠释。提出学校经营的产品就是教育服务的理念，从教育服务的量与质上构建出教育服务产品的表现形态，并设计了教育服务产品的生产流程及其销售的运行模式，以期引起大家对教育的关注。     

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。     

基于学习共同体的《教育技术学导论》——课程设计初探

文章简要地分析了教育技术导论课程的特点及其在目前的教学中存在的问题,提出以学习共同体作为学习组织形式开展教学,既可以丰富课堂教学形式,也能通过师生及同伴之间的互动,促进学习者独立思考,逐步建构自己对教育技术的理解。     

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.     

竞技体育的教育价值研究

竞技体育的价值体现着竞技体育的利社会性和利人性，其价值内涵包括两方面的内容：一是竞技体育在发展中应该凸显、确立人的地位和价值，促进人类的全面发展，以此采确定竞技体育的发展方向和目的，评价竞技体育的运行和发展；二是客观存在的制度、体制厦微观行为活动对人发展的影响，避免竞技体育的异化为其教育价值带采负面影响。     

论邓小平价值观--兼谈素质教育的价值分析

本文分析了邓小平理论和实践的价值特色以及邓小平的价值观体系的四个构成部分，并从中引发出对我国正在推行的素质教育价值的思考．对如何应用邓小平价值观指导中国的教育改革提出了自己的看法。