are sedentary behaviors associated with body mass index, physical activity, and dietary behaviors among adolescents?
OBJECTIVE: To describe the demographic characteristics of adolescent boys and girls who engage in three sedentary behaviors (television/video use, computer use, and reading/homework), and to explore how each sedentary activity is associated with body mass index (BMI), dietary behaviors, and leisure time physical activity. DESIGN: This study draws on data collected from Project EAT (Eating Among Teens), a school-based survey examining personal, behavioral, and socioenvironmental factors that are associated with nutritional intake among adolescents. SUBJECTS: The study sample consists of 4746 middle and high school students from 31 public schools in a metropolitan area of the upper Midwest. All students were invited to participate. The overall response rate for Project EAT was 81.5%. Data collection was completed during the 1998-1999 school year. STATISTICAL ANALYSIS: Multivariate linear regression was used for examining associations between independent and dependent variables, controlli
