Decrease in Television Viewing Predicts Lower Body Mass Index at 1-Year Follow-Up in Adolescents, but Not Adults

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• 作者：Simone A. French ; Nathan R. Mitchell ; Peter J. Hannan
• 关键词：television ; weight gain ; sugar-sweetened beverages ; physical activity
• 刊名：Journal of Nutrition Education and Behavior
• 出版年：2012
• 出版时间：September-October, 2012
• 年：2012
• 卷：44
• 期：5
• 页码：415-422
• 全文大小：405 K

文摘

Objective

To examine associations between television viewing, sugar-sweetened beverage consumption, eating out, physical activity, and body weight change over 1 year.

Design

<p>Secondary data analysis from randomized intervention trial.

Setting

<p>Households in the community.

Participants

<p>Adults (n = 153) and adolescents (n = 72) from the same households.

Intervention

<p>Households were randomized to a home-based obesity prevention intervention or to a no-intervention control group for a 1-year period.

Main Outcome Measures

<p>Self-reported television viewing (TV) hours, diet, and physical activity. Body mass index (BMI) computed from measured weight and height (primary outcome measure).

Analysis

<p>Mixed-model regression.

Results

<p>Among adolescents, a significant prospective association was observed between decreases in television viewing hours and lower BMI z score at 1-year follow-up (decreased TV hours: BMI z score mean = 0.65; no change or increase TV hours: BMI z score = 0.92; P < .02). No significant prospective associations were observed among adults.

Conclusions and Implications

<p>Reducing television viewing may be an effective strategy to prevent excess weight gain among adolescents.