Abstract
We examined the immediate and long-term effects of a school-based, behaviorally focused dietary change program for tenth-graders. Our behavioral change objectives included increased consumption of complex carbohydrates and decreased intake of saturated fats, sugar, and salt, particularly in the form of snack foods. We randomly assigned tenth-grade classes in two northern California high schools to either a five-session dietary change program or an assessment-only control group. We collected pre- and postprogram self-report data on 218 students in areas of dietary knowledge, behavior, attitudes, food availability in the home, and intentions and self-efficacy concerning eating in specific ways. We also observed school snack choices both directly and indirectly. Our results indicated significant changes in reported behavior, knowledge, and food availability at home, as well as changes in snack choices at school. We found these changes to be durable at one-year follow-up. Our findings suggest ways in which school-based programs focused on behavioral and environmental changes may be effective in promoting dietary changes at school and at home.
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