INSERM U557, INRA U1125, CNAM; Université Paris13, Centre de Recherche en Nutrition Humaine d'Ile-de-France, Paris, France.
Int J Obes (Lond). 2011 Jul;35(7):907-15. doi: 10.1038/ijo.2011.104. Epub 2011 May 31.
Sedentary behavior accounts for overweight and obesity, independently of physical activity. Correlates of sedentary behavior have not been extensively reported in the literature. Our objective was to determine factors associated with such behavior in 7 to 9-year-old French children in 2007, and to assess interactions between the identified correlates.
A nationally representative sample of 2525 children participated in the study. Television viewing, video/computer duration and characteristics of the children and their parents were assessed using a questionnaire completed by the parents. Correlates of television viewing (<2 h per day versus ≥ 2 h per day) as a proxy for sedentary behavior were estimated using multivariate logistic regression.
On an average, children spent more than 2 h per day in front of a screen (television: 1 h 32 min (s.e.m.: ± 0 h 02 min); video/computer: 0 h 40 min (± 0 h 02 min)). Television viewing duration was associated with sociodemographic (child's age, weight status, socio-economic characteristics of the family) and behavioral factors (physical and lifestyle activities). In children of non-overweight mothers, risk of spending ≥ 2 h per day in front of a television was significantly higher in those over 9 (versus 7 years: odds ratio (OR): 2.07; 95% confidence intervals (CI): 1.04-4.11), living in an educational priority zone (OR: 1.62; 95% CI: 1.08-2.44), who were not members of a sports team (OR: 2.24; 95% CI: 1.47-3.41), nor declared active by parents (OR: 1.92; 95% CI: 1.13-3.25), and whose parents' education level was lower than high school (OR: 1.84; 95% CI: 1.24-2.72). In contrast, in children of overweight mothers, only the criteria of ≥ 4 children in the family (versus 2-3 children: OR: 1.87; 95% CI: 1.05-3.35) and no reported parental occupation (versus manager or white collar: OR: 0.29; 95% CI: 0.11-0.76) were associated with watching television ≥ 2 h per day.
Correlates of sedentary behavior in 7 to 9-year-old children vary according to maternal overweight. Maternal body mass index must therefore be taken into account when developing strategies to prevent a sedentary lifestyle in children.
久坐行为会导致超重和肥胖，这与身体活动无关。久坐行为的相关因素在文献中尚未得到广泛报道。我们的目的是确定 2007 年 7 至 9 岁法国儿童中与这种行为相关的因素，并评估所确定的相关因素之间的相互作用。
一个全国代表性的 2525 名儿童的样本参与了这项研究。使用父母填写的问卷评估了电视观看、视频/计算机持续时间以及儿童及其父母的特征。使用多变量逻辑回归估计了作为久坐行为替代指标的电视观看时间（每天<2 小时与≥2 小时）的相关因素。
平均而言，儿童每天花在屏幕前的时间超过 2 小时（电视：1 小时 32 分钟（s.e.m.：±0 小时 02 分钟）；视频/计算机：0 小时 40 分钟（±0 小时 02 分钟））。电视观看时间与社会人口统计学（儿童年龄、体重状况、家庭的社会经济特征）和行为因素（身体和生活方式活动）有关。在非超重母亲的孩子中，9 岁（而非 7 岁）以上、居住在教育优先区、不属于运动队、父母未报告其活跃状态、父母教育水平低于高中的儿童，每天花费≥2 小时看电视的风险明显更高（OR：2.07；95%置信区间（CI）：1.04-4.11）。相比之下，在超重母亲的孩子中，只有家中有≥4 个孩子（而非 2-3 个孩子）（OR：1.87；95%CI：1.05-3.35）和没有报告父母职业（而非经理或白领）（OR：0.29；95%CI：0.11-0.76）的标准与每天观看电视≥2 小时相关。
7 至 9 岁儿童久坐行为的相关因素因母亲超重而异。因此，在制定预防儿童久坐生活方式的策略时，必须考虑到母亲的体重指数。
