Falbe J, Willett W C, Rosner B, Field A E
Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Pediatr Obes. 2017 Oct;12(5):406-413. doi: 10.1111/ijpo.12158. Epub 2016 Jun 23.
Recent technologies have changed screen time. TV can be viewed anywhere, anytime. Content can be collected via digital recorders and online streaming and viewed on smartphones. Video games are no longer strictly sedentary.
We sought to assess the unknown relations between new modes of TV viewing - recorded, online, downloaded and on hand-held devices - and active video games with body mass index (BMI).
Cross-sectional analysis of the 2011 wave of the Growing Up Today Study 2 cohort. We used gender-specific generalized estimating equations to examine screen time and BMI among 3071 women and 2050 men aged 16-24 years.
Among women, each hour/day of online TV (0.47; confidence interval [CI]: 0.12, 0.82) and total non-broadcast TV (0.37; CI: 0.14, 0.61) was associated with higher BMI, as was watching ≥ 1/2 h week of TV on hand-held devices (1.04; CI: 0.32-1.77). Active video games were associated with BMI among women, but not after restricting to those not trying to lose/maintain weight. Broadcast TV was associated with higher BMI (kg m ) among women and men (P < 0.05).
Among women, online TV, TV viewed on hand-held devices and the sum of non-broadcast TV time were associated with higher BMI. Broadcast TV was also associated with BMI in women and men.
近期技术改变了屏幕使用时间。电视可以在任何时间、任何地点观看。内容可以通过数字录像机和在线流媒体收集，并在智能手机上观看。电子游戏不再严格局限于久坐不动。
我们试图评估电视观看的新模式（录制、在线、下载以及在手持设备上观看）和主动式电子游戏与体重指数（BMI）之间尚不明确的关系。
对“今日成长研究2”队列2011年的数据进行横断面分析。我们使用特定性别的广义估计方程，研究了16至24岁的3071名女性和2050名男性的屏幕使用时间和BMI。
在女性中，每天在线观看电视每增加1小时（系数为0.47；置信区间[CI]：0.12，0.82）以及非广播电视总时长每增加1小时（系数为0.37；CI：0.14，0.61），BMI都会升高，每周在手持设备上观看电视≥半小时也是如此（系数为1.04；CI：0.32 - 1.77）。主动式电子游戏与女性的BMI相关，但在限制于那些并非试图减肥/维持体重的女性后则不相关。广播电视与女性和男性较高的BMI（kg/m²）相关（P < 0.05）。
在女性中，在线电视、在手持设备上观看的电视以及非广播电视总时长与较高的BMI相关。广播电视在女性和男性中也与BMI相关。
