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Fei Xin Zheng Zhu Sitong Chen Huan Chen Xiaoqing Hu Xiao Ma Kun Liang Yang Liu Lijuan Wang Yujun Cai Ang Chen Yan Tang 《运动与健康科学(英文)》2022,11(3):358
PurposeThis study aimed to describe the national prevalence of Chinese children and adolescents who met the World Health Organization muscle-strengthening exercise (MSE) recommendations and identify correlates of meeting the MSE recommendations.MethodsCross-sectional data from the 2019 Physical Activity and Fitness in China—The Youth Study, a nationally representative sample of Chinese children and adolescents (n = 80,413; mean age = 13.7 years; 53.9% girls) and their parents, were analyzed. Children and adolescents who reported engaging ≥3 days (up to 7 days) of MSE per week were classified as meeting the MSE recommendations. MSE, demographics, lifestyle behaviors (sport participation, moderate-to-vigorous physical activity, screen time, and sleep duration), exercise intention, peer and parental support, and parental MSE participation were assessed through self-reports. Logistic regression models were used to determine the correlates of meeting the MSE recommendations. The analyses were completed in 2020.ResultsOverall, 39.3% of children and adolescents met the MSE recommendations. Girls, 10th–12th graders, minorities, those from lower income households and those from families with lower parental education were less likely to meet the MSE recommendations. Children and adolescents who were proficient in ≥2 sports were more likely to meet the MSE recommendations (adjusted odds ratio (aOR) = 1.44, 95% confidence interval (95%CI): 1.26–1.65), as were those with more moderate-to-vigorous physical activity (aOR = 1.57, 95%CI: 1.53–1.61). Additionally, children and adolescents with high exercise intention (aOR = 1.60, 95%CI: 1.51–1.69), those whose parents met the adult MSE recommendations (aOR = 1.46, 95%CI: 1.40–1.52), and those who received high peer (aOR = 1.27, 95%CI: 1.20–1.34) and parental support (aOR = 1.07, 95%CI: 1.04–1.12) were more likely to meet the MSE recommendations.ConclusionLess than two-fifths of Chinese children and adolescents met the World Health Organization MSE recommendations. The correlates identified in our study can help inform the development of school and community based strategies and policies to enhance participation in MSE and improve muscular fitness of all Chinese children and adolescents. 相似文献
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高校建立分校后,出现了多校区图书馆,其读者服务工作呈现类型复杂、分布广等特点。文章就信息时代多校区图书馆文献资源建设和开创图书馆读者工作新局面,提出若干思路与对策。 相似文献
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论现代图书馆信息服务的创新 总被引:2,自引:0,他引:2
阐述了图书馆信息服务创新的三大动力,构建了信息服务创新的内容,指出了信息服务创新的的保障条件。 相似文献
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电子资源的日益增多以及检索界面的纷杂性使用户对电子资源的利用受到了影响.文章在对目前高校图书馆跨库检索系统所面临的问题和电子资源检索界面现状进行分析的基础上,提出了完善高校图书馆跨库检索系统的方案,并讨论了标准化跨库检索系统的优点及其重要意义. 相似文献
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Haisheng Li Kui Xu Pohua Chen Youyou Yuan Yi Qiu Ligang Wang Liu Zhu Xiaoge Wang Guohong Cai Liming Zheng Chun Dai Deng Zhou Nian Zhang Jixin Zhu Jinglin Xie Fuhui Liao Hailin Peng Yong Peng Jing Ju Zifeng Lin Junliang Sun 《国家科学评论(英文版)》2022,9(6)
The effects of nanoconfined water and the charge storage mechanism are crucial to achieving the ultrahigh electrochemical performance of two-dimensional transition metal carbides (MXenes). We propose a facile method to manipulate nanoconfined water through surface chemistry modification. By introducing oxygen and nitrogen surface groups, more active sites were created for Ti3C2 MXene, and the interlayer spacing was significantly increased by accommodating three-layer nanoconfined water. Exceptionally high capacitance of 550 F g–1 (2000 F cm–3) was obtained with outstanding high-rate performance. The atomic scale elucidation of the layer-dependent properties of nanoconfined water and pseudocapacitive charge storage was deeply probed through a combination of ‘computational and experimental microscopy’. We believe that an understanding of, and a manipulation strategy for, nanoconfined water will shed light on ways to improve the electrochemical performance of MXene and other two-dimensional materials. 相似文献
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文章以两所地方高师院校的现状调查为例,分析了当前高师院校人才培养在课程设计、教学管理等方面存在的问题与不足,并由此提出了优化课程结构、强化实践环节、健全教学管理机制等若干条建设性的思路与对策。 相似文献