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

David Sánchez-Oliva  Rebecca M. Leech  Alberto Grao-Cruces  Irene Esteban-Cornejo  Carmen Padilla-Moledo  Oscar L. Veiga 《Journal of sports sciences》2020,38(9):1062-1069

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.  相似文献   

Syllable-based reading improvement: Effects on word reading and reading comprehension in Grade 2     

《Learning and Instruction》2020

This study examined the effects of a syllable-based reading intervention for German second graders who demonstrated difficulties in the recognition of written words. The intervention focused on fostering word reading via syllable segmentation. The materials consisted of the 500 most frequent syllables typically read by 6- to 8-year-old children. The aims were to practice phonological recoding, consolidate orthographic representations of syllables, and routinize the access to these representations. Compared to children randomly assigned to a wait-list group, poor readers in the treatment condition showed significant improvements in standardized measures of phonological recoding, direct word recognition, and text-based reading comprehension after the 24-session intervention. Poor readers in the treatment condition also showed greater improvements in development of word recognition compared to children with efficient word recognition skills. The results provide evidence that a syllable-based reading intervention is a promising approach to increase struggling readers’ word recognition skills, which in turn will improve their reading comprehension.  相似文献   

‘I would say nine times out of 10 they come to the LSA rather than the teacher’. The role of teaching assistants in supporting children's mental health     

Ida Conboy 《Support for Learning》2021,36(3):380-399

This research explored how seven primary school teaching assistants (TAs) experienced their role in supporting children's mental health. Interviews were analysed using Interpretative Phenomenological Analysis (IPA). The participants believed that they supported children's mental health and particularly referenced the close relationships that they formed with children. Throughout their accounts of supporting children, the TAs referenced helpful factors (e.g. support from other staff) and challenges (e.g. hierarchy) within the school system. Supporting children’s mental health was an emotional experience for the TAs; they discussed the rewarding element, however, the topic also elicited fear. The findings provide several implications for school staff and external professionals about how TAs can be supported in their role. These include involving TAs in training opportunities, providing TAs with supervision, considering communication systems in schools, and introducing a mental health policy.  相似文献   

视力康复背景下体育锻炼与儿童动态视力关系研究及启示          下载免费PDF全文

潘景玲  蔡赓  殷荣宾  孙雷  王国祥 《体育科研》2019,(1):90-95

目的：探讨动态视力在不同类型体育项目间的发展特征，为体育锻炼改善视力的应用研究提供依据。方法：选取6~10岁无专门体育训练经历的在校学生和参加足球、乒乓球、跆拳道、空手道、游泳、体操等项目的俱乐部或体校学生，共603名。使用动态视力检测仪和标准对数视力灯箱测量动态视力和静态视力。计算动静比（动态视力/静态视力），并将其作为衡量动态视力发展水平的指标。结果：6~7岁是动态视力发展的敏感期（P＜0.05），8岁、10岁男性儿童的动静比高于女性儿童，且差异有统计学意义（P＜0.05）。校外体育练习组的动静比高于普通在校学生组（P＜0.05），开放性运动项目的动静比高于闭锁性运动项目（P＜0.05）。结论：参加体育锻炼对动态视力的发展有积极的影响，且不同运动项目的影响效果不同。  相似文献   

面向幼儿发展的表现性评价实践研究     

张蕊 《科教文汇》2020,(13):151-152

本研究采用表现性评价,对x幼儿园大班一个班级39名幼儿进行为期一年的发展性评价,在真实情境中对幼儿的发展状况作出连续性评价,获悉幼儿不同阶段的发展状况,同时对评价过程进行总结和反思。  相似文献   

“一带一路”体育赛事交流构想与策略——以英联邦运动会为参照     

王子朴  陈秉信  马家鑫  刘冬磊 《上海体育学院学报》2020,(4):61-69,94

体育是“一带一路”倡议人文交流的重要依托,体育赛事对实现民心相通发挥积极作用。英联邦运动会的长期举办推动了英联邦国家的整体发展,是体育赛事交流的典型案例。通过对英联邦运动会与“一带一路”体育赛事的对比,分析其对“一带一路”体育赛事的借鉴作用,并探讨“一带一路”体育赛事交流的构想与策略。认为:开展“一带一路”体育赛事交流应建立“一带一路”体育组织,组建相应的工作机构,举办“一带一路”国家运动会;构建“多边体育合作机制”,不断扩大“一带一路”体育赛事的覆盖面,重视赛事风险并避免负面影响,鼓励、支持多国举办“一带一路”体育赛事。  相似文献   

我国开展女子十项全能运动的必要性及实施策略   总被引：3，自引：0，他引：3  

赵鲁南 《山东体育学院学报》2003,19(2):54-57

运用献资料、逻辑归纳、对比分析、专家访谈等方法，分析奥运会田径项目发展趋势，指出男女田径项目设置将最终走向数量、形式上完全融合，提出我国提前开展女子十项全能运动的原因、意义及实施措施，旨在为我国田径运动更好地开展及竞技运动水平的快速提高提供参考依据。  相似文献   

第14届世界女子篮球锦标赛中外后卫能力的比较研究   总被引：8，自引：0，他引：8  

柏杨  周弛  顾新红 《西安体育学院学报》2003,20(6):49-52

通过对第14届世界女子篮球锦标赛前八强队伍的后卫的能力指标进行分析比较,来揭示了我国女篮后卫队员的不足,得出了后卫瘸腿问题是制约我国女篮发展的关键因素,为我国女篮后卫队员的发展、选拔和培养提供了有益的帮助。  相似文献   

跳远助跑速度变化对起跳效果的影响——国内外优秀运动员与我院选手的比较分析   总被引：1，自引：0，他引：1  

程万才 《西安体育学院学报》2003,20(2):78-79

笔者采用高速摄影、影片解析、数理统计等方法对西安体育学院男子跳远运动员和国内外优秀选手助跑速度变化而影响起跳效果的因素进行比较研究。结果表明:跳远助跑各段落速度的变化对起跳效果及成绩产生很大影响;西安体育学院男子跳远运动员绝对速度低,起跳前两步速度、速度利用率呈下降趋势,影响起跳初速度;跳远起跳前一步的速度、速度利用率对提高起跳效果要比起跳前9—10m段的速度、速度利用率更具有实际意义。  相似文献   

高速剪切轴向间隙的研究     

李耀辉  许春龙 《苏州市职业大学学报》2003,14(1):47-49

本针对剪切下料问题中存在的不足，从裂纹扩展的角度出发，结合断裂力学及塑性力学关于裂纹技术的相关理论，对剪切过程中影响断面质量的一个重要参数一轴向间隙进行分析，得出了高速剪切下合理轴向间隙的表这式。  相似文献