Data collection for Challenge! began in July 2002 and ended in December 2006. At the baseline evaluation, 235 adolescents between the ages of 11-16 were enrolled. Information was collected from the teens and their primary caregivers at baseline, 6 months (post-intervention), and 18 months (1 year post-intervention).

Teen Assessments:

Outcome Variables

• Body composition
  • Measured Height and Weight (used to calculate BMI)
  • Bioelectrical Impedance Analysis
  • DEXA
• Physical Activity
  • Accelerometry
  • SAPAC
• Diet
  • Youth/ Adolescent FFQ

Intervening Variables

• Demographics (gender, race, DOB, grade)
• Maturity (tanner staging)
• Self-Esteem (Rosenberg Self-Esteem Scale)
• Body Image/ Perception (Contour Drawing Scale)
• Body Esteem (Body Esteem Scale for Adolescents and Adults)
• Stages of Change
• Parenting Style (Authoritative Parenting Index)
• EATing Attitudes
• Depression (Beck Depression Inventory)
• Amherst Health and Activity Study-Student Version
  • Support for Physical Activity
  • Barriers and Enablers for PA
  • PA recall

Caregiver Assessments

• Demographics (gender, race, DOB, SES)
• Body Composition
  • Measured Height and Weight (used to calculate BMI)
  • Bioelectrical Impedance Analysis
• Self-Esteem (Rosenberg Self-Esteem Scale)
• Body Image/ Perception (Contour Drawing Scale)
• Body Esteem (Body Esteem Scale for Adolescents and Adults)
• Parental Feeding Strategies (Child Feeding Questionnaire)
• EATing Attitudes
• Depression (Beck Depression Inventory)
• Food Security
• Retrospective Physical Activity Questionnaire
• Home Food Inventory
• Physical Activity (Accelerometry)