The primary aim of the proposed pilot study is to assess the effects of fast food meals,
varying in serving size and rate of delivery, on energy (calorie) intake in adolescents.
Using a three-period crossover design, the investigators will evaluate three acute feeding
- Under Condition A, the total amount of food in a large fast food meal will be delivered
on a single tray at Time 0 (start of meal).
- Under Condition B, the same fast food meal will be equally divided among 4 separate
portions, with all portions delivered at Time 0.
- Under Condition C, the meal again will be equally divided among 4 separate portions,
but the portions will be delivered at 15-minute time intervals (Time 0, 15 minutes, 30
minutes, 45 minutes).
- Body mass index (BMI) between the 85th and 98th percentiles for sex and age
- Consumption of fast food at least one time per week
- Willingness to eat the foods specified in the research methods
- Parent/guardian willing and able to cooperate
- Access to a working telephone
- Major medical illness (eg, diabetes; heart, renal, or liver disease; cancer;
- Taking any prescription medication that may affect food intake
- Current smoking (i.e., any tobacco in the last month)
- Previous diagnosis of an eating disorder