BACKGROUND: There is little national research on longitudinal patterns of physical activity
and sedentary behavior in ethnically diverse teens as they transition to adulthood …

BACKGROUND: Little is known about physical activity (PA) and sedentary behavior
patterning or its impact on long-term PA sustainability, particularly during the critical …

OBJECTIVE. There is little epidemiologic research on longitudinal and secular trends in
weight-related health behaviors throughout the stages of adolescence. In particular, few …

PURPOSE: The objectives of this study were to describe longitudinal trends in adolescent
physical activity in a sample of US adolescents and to assess the effect of multiple …

BACKGROUND: The aim of this study was to investigate stability of physical activity from
childhood and adolescence to adulthood in multiple age cohorts, and analyze how well …

Background: Low levels of physical activity and high levels of sedentary behavior during
adolescence are a cause for concern. Sociodemographic, developmental, environmental …

BACKGROUND: A majority of youth do not attain the recommended levels of physical
activity. To develop interventions that will be more efficient at enabling healthy levels of …

BACKGROUND: The afterschool period holds promise for the promotion of physical activity,
yet little is known about the importance of this period as children age. PURPOSE: To …

OBJECTIVE. Little is known about how physical activity (PA), sedentary behavior, and
various adolescent health risk behaviors are associated. The objective of this study was to …

Objectives: To determine the extent to which physical activity and inactivity patterns vary by
ethnicity among subpopulations of US adolescents. Study design: Nationally representative …