Hernández B, Gortmaker S L, Colditz G A, Peterson K E, Laird N M, Parra-Cabrera S
Division of Nutrition and Health, National Institute of Public Health, Mexico.
Int J Obes Relat Metab Disord. 1999 Aug;23(8):845-54. doi: 10.1038/sj.ijo.0800962.
To assess the association of physical activity, television program viewing and other forms of video viewing with the prevalence of obesity among school children.
Cross-sectional study.
712 children, 9-16 y old, from a low- and a middle-income town in the Mexico City area.
Children completed a self administered questionnaire to assess time spent in physical activity and television viewing, and diet. Height weight and triceps skinfolds were measured. The outcome variable was obesity, and the covariates were hours of television programs and other video viewing, physical activity, energy intake, percentage of energy from fat, town of location of school, age, gender and perception of mother's weight status.
Among 461 children with complete information, 24% were classified as obese. Children reported an average of 4.1 +/- 2.2 h/d watching television (2.4 +/- 1.5 h/d for TV programs and 1.7 +/- 1.5 h/d for video cassette recorder (VCR) or videogames), and 1.8 +/- 1.3 h/d in moderate and vigorous physical activities. Odds ratios (OR) of obesity were 12% higher for each hour of television program viewing per day (OR = 1.12, 95% confidence interval (CI) 1.02,-1.22), and 10% lower for each hour of moderate/vigorous physical activity per day (OR = 0.90, 95% CI 0.83-0.98), controlling for age, gender, town and perception of mother's weight status. Children in the middle-income town had higher adjusted odds of obesity (OR = 2.58, 95% CI 1.47-4.54).
Physical activity and television viewing, but not VCR/videogames use, were related to obesity prevalence in Mexican children 9-16 y old.
评估体育活动、观看电视节目及其他形式的视频观看与学龄儿童肥胖患病率之间的关联。
横断面研究。
来自墨西哥城地区一个低收入和一个中等收入城镇的712名9至16岁儿童。
儿童完成一份自我管理问卷，以评估体育活动和看电视的时间以及饮食情况。测量身高、体重和肱三头肌皮褶厚度。结果变量为肥胖，协变量包括电视节目和其他视频观看时长、体育活动、能量摄入、脂肪供能百分比、学校所在城镇、年龄、性别以及对母亲体重状况的认知。
在461名有完整信息的儿童中，24%被归类为肥胖。儿童报告平均每天看电视4.1±2.2小时（电视节目2.4±1.5小时，录像机或电子游戏1.7±1.5小时），中等强度和剧烈体育活动时间为1.8±1.3小时。在控制年龄、性别、城镇和对母亲体重状况的认知后，每天每多看一小时电视节目，肥胖的优势比（OR）高12%（OR = 1.12，95%置信区间（CI）1.02 - 1.22），每天每进行一小时中等强度/剧烈体育活动，肥胖的优势比低10%（OR = 0.90，95% CI 0.83 - 0.98）。中等收入城镇的儿童经调整后的肥胖优势比更高（OR = 2.58，95% CI 1.47 - 4.54）。
体育活动和观看电视节目与9至16岁墨西哥儿童的肥胖患病率相关，但使用录像机/电子游戏与之无关。
