alexa Sociodemographic, developmental, environmental, and psychological correlates of physical activity and sedentary behavior at age 11 to 12.
Infectious Diseases

Infectious Diseases

Air & Water Borne Diseases

Author(s): Brodersen NH, Steptoe A, Williamson S, Wardle J

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Abstract BACKGROUND: Low levels of physical activity and high levels of sedentary behavior during adolescence are a cause for concern. Sociodemographic, developmental, environmental, and psychological factors may be relevant, but the correlates of these behaviors may differ. PURPOSE: To investigate the multidimensional correlates of physical activity and sedentary behavior in a large sample of 11- to 12-year-old boys and girls. METHODS: Cross-sectional survey of 2,578 boys and 1,742 girls from 36 schools stratified by socioeconomic background and gender mix of students (84\% response rate). Questionnaire assessments and objective measurements of height and weight were obtained. RESULTS: Days of vigorous physical activity and hours of sedentary behaviors over the past week were uncorrelated. Ethnicity, socioeconomic factors, developmental stage, environmental factors, and psychological variables were associated with physical activity and sedentary behavior in univariate analyses. In multiple regression, sedentary behavior was greater in ethnic minority groups, in students from more deprived backgrounds, and in those with conduct problems. Girls who were more advanced developmentally and who reported emotional symptoms also engaged in more sedentary behaviors. Vigorous physical activity was associated with good self-rated health, prosocial psychological characteristics, and (in boys) with low emotional symptoms. CONCLUSIONS: A multidimensional approach to understanding the context of physical activity in early adolescence is needed because factors in several domains are relevant. The correlates of physical activity and sedentary behaviors are distinct in this age group, and there are also important gender differences. This article was published in Ann Behav Med and referenced in Air & Water Borne Diseases

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