Reducing Children's Television Viewing to Prevent Obesity

作者：Thomas N. Robinson · 发表于：JAMA · 年份：1999 · DOI：10.1001/jama.282.16.1561 · 被引用次数：1846 · 研究领域：Obesity, Physical Activity, Diet、Child Development and Digital Technology、Children's Physical and Motor Development

CONTEXT: Some observational studies have found an association between television viewing and child and adolescent adiposity. OBJECTIVE: To assess the effects of reducing television, videotape, and video game use on changes in adiposity, physical activity, and dietary intake. DESIGN: Randomized controlled school-based trial conducted from September 1996 to April 1997. SETTING: Two sociodemographically and scholastically matched public elementary schools in San Jose, Calif. PARTICIPANTS: Of 198 third- and fourth-grade students, who were given parental consent to participate, 192 students (mean age, 8.9 years) completed the study. INTERVENTION: Children in 1 elementary school received an 18-lesson, 6-month classroom curriculum to reduce television, videotape, and video game use. MAIN OUTCOME MEASURES: Changes in measures of height, weight, triceps skinfold thickness, waist and hip circumferences, and cardiorespiratory fitness; self-reported media use, physical activity, and dietary behaviors; and parental report of child and family behaviors. The primary outcome measure was body mass index, calculated as weight in kilograms divided by the square of height in meters. RESULTS: Compared with controls, children in the intervention group had statistically significant relative decreases in body mass index (intervention vs control change: 18.38 to 18.67 kg/m2 vs 18.10 to 18.81 kg/m2, respectively; adjusted difference -0.45 kg/m2 [95% confidence interval [CI], -0.73 to -0.17]; P = .002)...