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首页> 外文期刊>Preventive Medicine: An International Journal Devoted to Practice and Theory >Associations between indicators of screen time and adiposity indices in Portuguese children
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Associations between indicators of screen time and adiposity indices in Portuguese children

机译：葡萄牙儿童的屏幕时间指标与肥胖指数之间的关联

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Objectives: To examine associations between three types of screen time (TV, electronic games (EG), and personal computer (PC)) and two proxies of adiposity (body mass index (BMI) and sum of skinfolds) in children. Design: The sample comprised 17,509 children aged 2-13. years who participated in the 2009/10 Portuguese Prevalence Study of Obesity in Childhood. Methods: Complex samples generalised linear models, using school as a cluster variable were ran separately for each combination of ST predictor and adiposity-related outcome, adjusting for covariates including age, sex, physical activity, diet, and parental factors. Missing values in predictors and covariates were imputed. Results: Watching TV for >. 2. h/day compared to <. 1. h/day was associated with higher age- and sex-specific BMI standard deviation score (coefficient: 0.06, 95% CI: 0.01 to 0.12, linear trend p. =. 0.008) and sum of skinfolds (logged and back transformed 0.04, 0.02 to 0.07, p. =. <. 0.001). We also found weak evidence for an inverse association between PC and BMI. Conclusions: Associations between ST and adiposity differ by both type of ST and type of adiposity marker. Only TV viewing was consistently associated with adiposity. Studies using a single adiposity marker looking at total screen time or total sedentary behaviour time may miss or confound type-specific associations.
机译：目的：检查儿童的三种屏幕时间（电视，电子游戏（EG）和个人计算机（PC））与两种肥胖的体重指数（体重指数（BMI）和皮褶总和）之间的关联。设计：样本包括17,509名2-13岁的儿童。年参加了2009/10葡萄牙儿童肥胖流行率研究。方法：将复杂样本广义线性模型（以学校作为聚类变量）分别针对ST预测变量和肥胖相关结局的每种组合进行，并调整包括年龄，性别，身体活动，饮食和父母因素在内的协变量。估算变量和协变量中的缺失值。结果：正在看电视>。 2.小​​时/天与<。 1.小时/天与较高的年龄和性别特定的BMI标准偏差评分（系数：0.06，95％CI：0.01至0.12，线性趋势p。= 0.008）和皮褶总和（记录的和反变换的0.04）相关（0.02至0.07，p。=。<.0.001）。我们还发现PC和BMI之间存在负相关的证据不足。结论：ST和肥胖之间的关联因ST类型和肥胖标记物的类型而异。只有电视观看与肥胖相关。使用单个肥胖标记物查看总屏幕时间或总久坐行为时间的研究可能会遗漏或混淆特定类型的关联。

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