College of Public Health, University of South Florida, Tampa, Florida, United States of America.
University of South Florida, The Chiles Center, Tampa, Florida, United States of America.
PLoS One. 2022 Dec 1;17(12):e0278490. doi: 10.1371/journal.pone.0278490. eCollection 2022.
This study examines the association between time spent watching TV, playing video games, using a computer or handheld device (screen time), and BMI among U.S. adolescents, and potential effect modification of these associations by sex, sleep duration, and physical activity.
A secondary analysis of 10-17-year-old participants in the 2016-2017 National Survey of Children's Health was conducted. Multivariable logistic regression was used to examine the association between parent-reported screen time and BMI categories and effect modification by sex, sleep duration and physical activity.
The analysis included 29,480 adolescents (49.4% female). Those with ≥1 hour (vs <1 hour) of TV/video games per day were more likely to be overweight/obese (adjusted Odds Ratio (aOR) 1-3 hours = 1.4; 95% Confidence Interval (CI)1.19, 1.65; aOR ≥4 hours = 2.19; 95% CI 1.73, 2.77). This association was stronger in adolescents who did not meet the guidelines for physical activity (aOR ≥ 4 hours = 3.04; 95% CI: 2.1, 4.4) compared with those who did (aOR ≥ 4 hours = 1.64; 95% CI: 0.72, 3.72). Using computers/handheld devices was associated with a smaller increase in odds of overweight/obesity (aOR ≥4 hours = 1.53; 95% CI:1.19, 1.97).
Watching TV or playing video games for ≥1 hour per day is associated with obesity in adolescents who did not meet the guidelines for physical activity. Using computers or handheld devices seems to have a weaker association with BMI compared with TV/video games.
本研究探讨了美国青少年看电视、玩电子游戏、使用电脑或手持设备（屏幕时间）与 BMI 之间的关系，并研究了性别、睡眠时间和身体活动对这些关系的潜在调节作用。
对 2016-2017 年全国儿童健康调查中 10-17 岁参与者进行了二次分析。采用多变量逻辑回归分析家长报告的屏幕时间与 BMI 类别之间的关系，并研究性别、睡眠时间和身体活动对这些关系的调节作用。
本分析纳入了 29480 名青少年（49.4%为女性）。与每天看电视/玩电子游戏时间<1 小时的青少年相比，每天看电视/玩电子游戏时间≥1 小时的青少年超重/肥胖的可能性更大（校正比值比 1-3 小时=1.4；95%置信区间 1.19-1.65；校正比值比≥4 小时=2.19；95%置信区间 1.73-2.77）。与符合身体活动指南的青少年相比，不符合身体活动指南的青少年这种关联更强（校正比值比≥4 小时=3.04；95%置信区间：2.1-4.4），而符合身体活动指南的青少年（校正比值比≥4 小时=1.64；95%置信区间：0.72-3.72）。使用电脑/手持设备与超重/肥胖的几率增加较小相关（校正比值比≥4 小时=1.53；95%置信区间：1.19-1.97）。
对于不符合身体活动指南的青少年，每天看电视或玩电子游戏≥1 小时与肥胖有关。与电视/电子游戏相比，使用电脑或手持设备与 BMI 的关联似乎较弱。
