Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada.
PLoS One. 2011;6(11):e26643. doi: 10.1371/journal.pone.0026643. Epub 2011 Nov 1.
To examine the association between duration and type of screen time (TV, video games, computer time) and blood pressure (BP) and lipids in overweight and obese adolescents.
This is a cross-sectional study of 282 overweight or obese adolescents aged 14-18 years (86 males, 196 females) assessed at baseline prior to beginning a lifestyle intervention study for weight control. Sedentary behaviours, defined as hours per day spent watching TV, playing video games, recreational computer use and total screen time were measured by self-report. We examined the associations between sedentary behaviours and BP and lipids using multiple linear regression.
Seated video gaming was the only sedentary behaviour associated with elevated BP and lipids before and after adjustment for age, sex, pubertal stage, parental education, body mass index (BMI), caloric intake, percent intake in dietary fat, physical activity (PA) duration, and PA intensity. Specifically, video gaming remained positively associated with systolic BP (adjusted r = 0.13, β = 1.1, p<0.05) and total cholesterol/HDL ratio (adjusted r = 0.12, β = 0.14, p<0.05).
Playing video games was the only form of sedentary behaviour that was independently associated with increased BP and lipids. Our findings provide support for reducing time spent playing seated video games as a possible means to promote health and prevent the incidence of cardiovascular disease (CVD) risk factors in this high risk group of overweight and obese adolescents. Future research is needed to first replicate these findings and subsequently aim to elucidate the mechanisms linking seated video gaming and elevated BP and lipids in this high risk population.
Clinicaltrials.gov NCT00195858.
研究超重和肥胖青少年的屏幕时间（电视、视频游戏、计算机时间）持续时间和类型与血压（BP）和血脂之间的关系。
这是一项横断面研究，纳入了 282 名年龄在 14-18 岁（86 名男性，196 名女性）的超重或肥胖青少年，这些青少年在开始进行生活方式干预体重控制研究之前进行了基线评估。通过自我报告测量久坐行为，定义为每天看电视、玩视频游戏、娱乐性使用计算机和总屏幕时间的小时数。我们使用多元线性回归来研究久坐行为与 BP 和血脂之间的关系。
在调整年龄、性别、青春期阶段、父母教育程度、体重指数（BMI）、热量摄入、膳食脂肪摄入百分比、体力活动（PA）持续时间和 PA 强度后，只有坐着玩视频游戏与 BP 和血脂升高有关。具体来说，视频游戏与收缩压（调整后 r=0.13，β=1.1，p<0.05）和总胆固醇/高密度脂蛋白比值（调整后 r=0.12，β=0.14，p<0.05）呈正相关。
玩视频游戏是唯一一种与血压升高和血脂升高独立相关的久坐行为。我们的研究结果支持减少坐着玩视频游戏的时间，这可能是促进超重和肥胖青少年健康并预防心血管疾病（CVD）风险因素发生的一种手段。未来的研究需要首先复制这些发现，随后旨在阐明在这一高风险超重和肥胖人群中，坐姿视频游戏与血压升高和血脂升高之间的联系机制。
Clinicaltrials.gov NCT00195858。
