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  • Title: Exploring moderators of the relationship between physical activity behaviors and television viewing in elementary school children.
    Author: Smith NE, Rhodes RE, Naylor PJ, McKay HA.
    Journal: Am J Health Promot; 2008; 22(4):231-6. PubMed ID: 18421887.
    Abstract:
    PURPOSE: Previous research suggests that there is limited evidence to support a negative association between physical activity (PA) behaviors and television (TV) viewing time in children. The purpose of this study was to extend the research involving PA-TV viewing relationships and to explore potential moderators, including gender, ethnicity, weekday/ weekend behaviors, structured/unstructured activities, and seasonal variability. DESIGN: A 9-month longitudinal design, across one school year, with assessments every 3 months. SETTING: Elementary schools in the Vancouver and Richmond districts of British Columbia, Canada. Subjects. Subjects (N = 344; 47% female) were 9- to 11-year-old children who participated in a school-based PA initiative from September 2003 to June 2004. INTERVENTION: Not applicable. MEASURES: Assessments of PA were measured using the Physical Activity Questionnaire for Children. TV viewing time and structured PA were measured using a self-report questionnaire. ANALYSIS: Basic descriptives, Pearson r bivariate correlations and moderated multiple regressions with mean centered variables. RESULTS: No significant interaction effects were found for any of the proposed moderators. Null bivariate correlations are supportive of findings in previous literature. CONCLUSIONS: Our results did not find support for PA-TV viewing relations, regardless of gender, ethnicity, structured PA, and seasonal variability. PA interventions aimed at modifying sedentary behaviors, such as TV viewing, may not be warranted.
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