Division of Adolescent Medicine, Children's Hospital Boston, Boston, Massachusetts, USA.
Obesity (Silver Spring). 2010 May;18(5):1015-20. doi: 10.1038/oby.2009.391. Epub 2009 Oct 29.
Previous studies have observed that television (TV) viewing is predictive of obesity and weight gain. We examined whether the cross-sectional association between TV viewing and BMI varied by racial/ethnic subgroups among young women in Wave III (collected in 2001-2002) of the National Longitudinal Study of Adolescent Health. We used multivariate linear regression to examine the relationship between TV viewing and BMI among 6,049 females while controlling for sociodemographic and health attributes. We stratified the sample by race/ethnicity to better understand the association between TV viewing and BMI across different groups. Black and Hispanic females had higher BMIs (black: 28.5 kg/m(2), Hispanic: 27.3 kg/m(2), white: 26.0 kg/m(2)) than white females, while black females reported higher numbers of hours spent watching TV (black: 14.7 h/week, Hispanic: 10.6 h/week, white: 11.2 h/week) when compared to their white and Hispanic peers. TV viewing was positively associated with BMI (beta = 0.79, P = 0.003 for 8-14 vs. < or =7 h/week; beta = 1.18, P = 0.01 for >14 vs. < or =7 h/week) independent of race/ethnicity, age, maternal education, history of pregnancy, parental obesity, and household income. However, in models stratified by race/ethnicity, increased TV viewing was associated with increased BMI only among white females; TV viewing was not predictive of higher BMI in black or Hispanic young adult females. Among black and Hispanic females, counseling to decrease TV viewing may be important but insufficient for promoting weight loss.
先前的研究表明，看电视与肥胖和体重增加有关。我们研究了在青少年健康纵向研究第三波（于 2001-2002 年收集）中，年轻女性的种族/族裔亚组之间看电视与 BMI 的横断面关联是否存在差异。我们使用多元线性回归来检查 6049 名女性中看电视与 BMI 之间的关系，同时控制社会人口统计学和健康属性。我们按种族/族裔对样本进行分层，以更好地了解不同群体中看电视与 BMI 之间的关联。与白人女性相比，黑人女性（28.5kg/m(2)）和西班牙裔女性（27.3kg/m(2)）的 BMI 更高，而黑人女性看电视的时间比白人女性（黑人：14.7 小时/周，西班牙裔：10.6 小时/周，白人：11.2 小时/周）和西班牙裔女性（黑人：14.7 小时/周，西班牙裔：10.6 小时/周，白人：11.2 小时/周）多。看电视与 BMI 呈正相关（8-14 小时/周与 < 或 =7 小时/周相比，β=0.79，P=0.003；>14 小时/周与 < 或 =7 小时/周相比，β=1.18，P=0.01），与种族/族裔、年龄、母亲教育程度、怀孕史、父母肥胖和家庭收入无关。然而，在按种族/族裔分层的模型中，看电视时间增加仅与白人女性的 BMI 增加有关；看电视与黑人或西班牙裔年轻成年女性的 BMI 升高无关。在黑人女性和西班牙裔女性中，减少看电视的咨询可能很重要，但不足以促进减肥。
