Associations between screen time and physical activity among Spanish adolescents.
Associations between screen time and physical activity among Spanish adolescents.
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DOI：
10.1371/journal.pone.0024453
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发表时间：
2011
期刊：
影响因子：
3.7
通讯作者：
Sanchís-Moysi J
中科院分区：
文献类型：
--
作者：
Serrano-Sanchez JA;Martí-Trujillo S;Lera-Navarro A;Dorado-García C;González-Henríquez JJ;Sanchís-Moysi J
在一个或多个屏幕前花费过多的时间可以解释身体活动的位移。本研究旨在确定屏幕时间是否与生活在有利环境条件下的西班牙青少年中中度至剧烈体力活动（MVPA）水平降低有关。采用多阶段分层随机抽样方法，从西班牙大加那利岛的学校人口中选择3503名青少年（12-18岁）。MVPA，屏幕前的时间在电视，电脑，视频游戏机和便携式控制台进行了评估，在课堂上完成一个标准化的问卷调查。进行了双变量和多变量logistic回归分析，调整了一组社会环境变量。46%的女孩（95% CI±2.3%）和26%的男孩（95% CI±2.1%）不符合MVPA对青少年的建议。主要的性别差异被观察到的时间投入到积极的PA，视频游戏和总时间花在屏幕上的活动。报告总筛查时间为4小时·周-1或以上的男孩显示，未能达到推荐的青少年MVPA水平的风险增加了64%（OR=0.61，95%CI，0.44-0.86）。 参与有组织的体育活动和体育比赛与MVPA的相关性比屏幕相关行为更强。没有单一的屏幕相关行为解释青少年MVPA的减少。然而，通过几个屏幕相关的行为积累的总时间与男生的MVPA水平呈负相关。这种关联可能是由于锻炼时间的减少，因为久坐的屏幕时间活动的时间增加了。参加有组织的体育活动似乎可以抵消在屏幕前过多时间对体育活动的负面影响。
Excessive time in front of a single or several screens could explain a displacement of physical activity. The present study aimed at determining whether screen-time is associated with a reduced level of moderate to vigorous physical activity (MVPA) in Spanish adolescents living in favorable environmental conditions. A multi-stage stratified random sampling method was used to select 3503 adolescents (12–18 years old) from the school population of Gran Canaria, Spain. MVPA, screen-time in front of television, computer, video game console and portable console was assessed in the classroom by fulfilling a standardized questionnaire. Bivariate and multivariate logistic regression analyses adjusted by a set of social-environmental variables were carried out. Forty-six percent of girls (95% CI±2.3%) and 26% of boys (95% CI±2.1%) did not meet the MVPA recommendations for adolescents. Major gender differences were observed in the time devoted to vigorous PA, video games and the total time spent on screen-based activities. Boys who reported 4 hours•week−1 or more to total screen-time showed a 64% (OR = 0.61, 95% CI, 0.44–0.86) increased risk of failing to achieve the recommended adolescent MVPA level. Participation in organized physical activities and sports competitions were more strongly associated with MVPA than screen-related behaviors. No single screen-related behavior explained the reduction of MVPA in adolescents. However, the total time accumulated through several screen-related behaviors was negatively associated with MVPA level in boys. This association could be due to lower availability of time for exercise as the time devoted to sedentary screen-time activities increases. Participation in organized physical activities seems to counteract the negative impact of excessive time in front of screens on physical activity.
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影响因子：
8
作者：
Gordon-Larsen, P;McMurray, RG;Popkin, BM
通讯作者：
Popkin, BM
影响因子：
4.9
作者：
Ara, I.;Vicente-Rodriguez, G.;Calbet, J. A. L.
通讯作者：
Calbet, J. A. L.
影响因子：
2.2
作者：
Bengoechea, Enrique Garcia;Sabiston, Catherine M.;Farnoush, Michelle
通讯作者：
Farnoush, Michelle
影响因子：
15.8
作者：
Ekelund U;Brage S;Froberg K;Harro M;Anderssen SA;Sardinha LB;Riddoch C;Andersen LB
通讯作者：
Andersen LB
影响因子：
--
作者：
Feldman, DE;Barnett, T;Abenhaim, L
通讯作者：
Abenhaim, L