Background: The school environment has the potential to influence student body mass index (BMI) through programs and policies. Our objective was to examine the effect of modifying obesity-related school policies and programs on youths' BMI trajectories. Methods: Obesity-related school policies and programs related to physical activity and healthy…

A two-phase (P1 and P2) physical activity program/or 9th and 10th grade students, particularly adolescent females of color, was designed and implemented at a mid-western urban high school during lunch time. Written surveys, field notes, interviews and an 8-item questionnaire developed by the researchers were the methods used to collect data to…