Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada.
Am J Prev Med. 2013 Apr;44(4 Suppl 4):S364-70. doi: 10.1016/j.amepre.2012.11.040.
Sedentary behavior has been associated with deleterious cardiometabolic health indicators in adults, but very little research has examined this relationship in youth.
To examine the association between the duration and type of sedentary screen behavior with diabetes risk factors (fasting glucose, insulin, homeostasis model-insulin resistance [HOMA-IR], 2-hour postload glucose, hemoglobin A1c) in a sample of overweight and obese adolescents.
A cross-sectional study of 307 overweight or obese adolescents aged 14-18 years (90 boys, 217 girls) assessed at baseline of a lifestyle intervention for weight control conducted from 2005 to 2010. Sedentary screen behaviors, defined as hours per day spent watching TV, playing seated video games, recreational computer use, and total screen time were measured by self-report. Data were analyzed using linear regression analyses in 2012.
TV viewing was the only type of sedentary screen behavior associated with elevated diabetes risk factors before and after adjustment for confounders. Specifically, TV viewing remained positively associated with fasting insulin (adjusted r=0.11, β=0.10, p=0.048) and HOMA-IR (adjusted r=0.11, β=0.10, p=0.05) after adjustment for age, gender, waist-to-hip ratio, caloric intake, percentage of intake in carbohydrates, physical activity duration, and physical activity intensity.
TV watching may be independently associated with an increase in diabetes risk factors in a high-risk sample of overweight and obese adolescents. These findings provide support for interventions designed to reduce time spent watching TV as a possible means to attenuating diabetes risk factors in this high-risk population.
久坐行为与成年人的不良心血管代谢健康指标有关，但很少有研究在青少年中对此进行研究。
研究超重和肥胖青少年中久坐的屏幕行为时间和类型与糖尿病风险因素（空腹血糖、胰岛素、胰岛素抵抗稳态模型[HOMA-IR]、2 小时餐后血糖、糖化血红蛋白）之间的关联。
对 2005 年至 2010 年期间进行的一项生活方式干预肥胖控制研究的基线评估中，对 307 名年龄在 14-18 岁的超重或肥胖青少年（90 名男孩，217 名女孩）进行了横断面研究。久坐的屏幕行为，定义为每天看电视、玩坐姿视频游戏、娱乐性计算机使用和总屏幕时间的小时数，通过自我报告进行测量。数据在 2012 年通过线性回归分析进行分析。
在调整混杂因素后，只有看电视这一类型的久坐屏幕行为与糖尿病风险因素升高相关。具体来说，在调整年龄、性别、腰臀比、热量摄入、碳水化合物摄入量百分比、体育活动时间和体育活动强度后，看电视仍然与空腹胰岛素（调整 r=0.11，β=0.10，p=0.048）和 HOMA-IR（调整 r=0.11，β=0.10，p=0.05）呈正相关。
在超重和肥胖青少年的高危人群中，看电视可能与糖尿病风险因素的增加独立相关。这些发现为旨在减少看电视时间的干预措施提供了支持，这可能是减轻该高危人群糖尿病风险因素的一种手段。
