OBJECTIVES: Short sleep has been associated with adolescent obesity. Most studies used
a cross-sectional design and modeled BMI categories. We sought to determine if sleep
duration was associated with BMI distribution changes from age 14 to 18. METHODS:
Adolescents were recruited from suburban high schools in Philadelphia when entering ninth
grade (n= 1390) and were followed-up every 6 months through 12th grade. Height and
weight were self-reported, and BMIs were calculated (kg/m2). Hours of sleep were self …