Duration of television watching is associated with increased body mass index
Duration of television watching is associated with increased body mass index
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DOI：
10.1067/s0022-3476(03)00418-9
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发表时间：
2003-10-01
影响因子：
5.1
通讯作者：
Harris, KJ
中科院分区：
文献类型：
--
作者：
Kaur, H;Choi, WS;Harris, KJ
目的探讨青少年看电视对随后体重指数（BMI = kg/m2）变化的影响，研究设计数据来自加州青少年纵向调查（Teen Longitudinal Survey）12 ~ 17岁青少年，基线评估于1993年，随访于1996年。使用自我报告的身高和体重计算BMI，并推导出年龄特异性和性别特异性BMI%。在基线时获得每天观看电视的小时数（BTV）。结果2223名青少年（52%为男性，68%为白色）中，基线时超重（BMI ≥ 95百分位数）占5.85%（n = 130），随访时超重率为5.40%（n = 120）。平均BTV为2.85（SD，1.98）。在调整后的模型中，BTV每增加一小时，基线BMI%增加0.9，随访BMI%增加0.47。青少年谁看了超过2小时的电视，每天是可能的两倍，超重的青少年谁看了不到或等于2 hours.Conclusions看电视导致随后的增加，BMI指数和超重。减少超重的努力应该考虑减少看电视的时间。
Objective To assess the effect of television viewing on subsequent change in body mass index (BMI = kg/m(2)) percentiles (BMI%) in adolescence.Study design Data were drawn from the California Teen Longitudinal Survey of adolescents 12 to 17 years old with baseline assessment in 1993 and follow-up in 1996. Self-reported height and weight were used to calculate BMI and derive age-specific and sex-specific BMI%. Hours of television watched per day were obtained at baseline (BTV). The relations of BTV and BMI percentiles both at baseline and after 3 years were assessed with linear regression modeling.Results Of 2223 adolescents (52% male, 68% white), 5.85% (n = 130) were overweight (BMI greater than or equal to95th percentile) at baseline and 5.40% (n = 120) at follow-up. Mean BTV was 2.85 (SD, 1.98). In adjusted models, with each additional hour of BTV, the baseline BMI% increased by .9, and the follow-up BMI% increased by .47. Adolescents who watched more than 2 hours of television a day were twice as likely to be overweight at follow-up as adolescents who watched less than or equal to 2 hours.Conclusions Television viewing leads to a subsequent increase in BMI percentiles and overweight. Efforts to decrease overweight should consider interventions to reduce television time.