Less screen time and more frequent vigorous physical activity is associated with lower risk of reporting negative mental health symptoms among Icelandic adolescents.
Less screen time and more frequent vigorous physical activity is associated with lower risk of reporting negative mental health symptoms among Icelandic adolescents.
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DOI：
10.1371/journal.pone.0196286
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发表时间：
2018
期刊：
影响因子：
3.7
通讯作者：
Arngrimsson SA
中科院分区：
文献类型：
--
作者：
Hrafnkelsdottir SM;Brychta RJ;Rognvaldsdottir V;Gestsdottir S;Chen KY;Johannsson E;Guðmundsdottir SL;Arngrimsson SA
很少有研究探讨屏幕时间和身体活动与青年心理健康的潜在相关性，特别是使用客观方法。我们研究了冰岛青少年中这些变量的横截面协会，使用客观和主观的测量身体活动。数据收集于2015年春季，来自冰岛首都雷克雅未克六所小学的315名十年级学生（平均年龄15.8岁）。参与者通过问卷调查报告了人口统计数据，每周剧烈体育活动的频率，每天屏幕时间和心理健康状况（抑郁，焦虑和躯体投诉，自尊和生活满意度的症状）。总的身体活动是在一周内用腕戴式加速度计测量的。身体成分由DXA扫描确定。Poisson回归分析用于探索屏幕时间和身体活动与心理健康变量的独立和交互关联，调整性别，体脂百分比和母亲教育。较少的屏幕时间（低于5.3小时/天的组中位数）和更频繁的剧烈体力活动（≥ 4次/周）均与报告较少的抑郁，焦虑，低自尊和生活不满症状相关。在客观测量的身体活动和心理健康结果之间没有观察到显着的关联。交互回归分析显示，报告屏幕时间更少和更频繁的剧烈体育活动的组报告抑郁，焦虑，低自尊和生活不满症状的风险最低。在冰岛青少年中，较少的屏幕时间和更频繁的剧烈体育活动与报告心理健康问题的风险较低有关。那些报告较少屏幕时间和更频繁剧烈体力活动相结合的人风险最低，这表明这两种行为对心理健康结果之间存在协同关系。我们的研究结果支持引导年轻人更积极，更少久坐/基于屏幕的生活方式。
Few studies have explored the potential interrelated associations of screen time and physical activity with mental health in youth, particularly using objective methods. We examined cross-sectional associations of these variables among Icelandic adolescents, using objective and subjective measurements of physical activity. Data were collected in the spring of 2015 from 315 tenth grade students (mean age 15.8 years) in six elementary schools in metropolitan Reykjavík, Iceland. Participants reported, via questionnaire, on demographics, weekly frequency of vigorous physical activity, daily hours of screen time and mental health status (symptoms of depression, anxiety and somatic complaints, self-esteem and life satisfaction). Total physical activity was measured over one week with wrist-worn accelerometers. Body composition was determined by DXA-scanning. Poisson regression analysis was used to explore independent and interactive associations of screen time and physical activity with mental health variables, adjusting for gender, body fat percentage and maternal education. Less screen time (below the group median of 5.3 h/day) and more frequent vigorous physical activity (≥4x/week) were each associated with reporting fewer symptoms of depression, anxiety, low self-esteem, and life dissatisfaction. No significant associations were observed between objectively measured physical activity and mental health outcomes. Interactive regression analysis showed that the group reporting both less screen time and more frequent vigorous physical activity had the lowest risk of reporting symptoms of depression, anxiety, low self-esteem, and life dissatisfaction. Reports of less screen time and more frequent vigorous physical activity were associated with lower risk of reporting mental health problems among Icelandic adolescents. Those who reported a combination of engaging in less screen time and more frequent vigorous physical activity had the lowest risk, suggesting a synergistic relationship between the two behaviors on mental health outcomes. Our results support guiding youth towards more active and less sedentary/screen-based lifestyle.
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通讯作者：
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