Multi-media Obesity Prevention Program for Adolescents

实验性的：Computerized Tailored Intervention

Students interacted with the 30-minute program through a series of Transtheoretical Model (TTM) based assessments and tailored feedback messages. A full TTM intervention was delivered for physical activity, in which each of the appropriate constructs of the TTM based on stage of change was addressed. Optimally tailored interventions were delivered for fruit and vegetable consumption and limited TV viewing. These interventions offered feedback on the most important TTM constructs based on stage of change for each behavior. Multimedia components, including audio, video, and animations helped to capture students' interest.

行为的：Health in Motion

Students interacted with the 30-minute program through a series of Transtheoretical Model (TTM) based assessments and tailored feedback messages. A full TTM intervention was delivered for physical activity, in which each of the appropriate constructs of the TTM based on stage of change was addressed. Optimally tailored interventions were delivered for fruit and vegetable consumption and limited TV viewing. These interventions offered feedback on the most important TTM constructs based on stage of change for each behavior. Multimedia components, including audio, video, and animations helped to capture students' interest.

无干预：Control

Computerized assessments of Transtheoretical Model constructs at 0, 2, 6, and 12 months

The number of days per week for which students got at least 60 minutes of physical activity

The number of servings of fruits and vegetables consumed each day

The number of hours of TV watch each day, including time spent watching TV, videotapes, and DVD's

Stage of change for readiness to do at least 60 minutes of physical activity on at least 5 days of the week

Stage of change for readiness to eat at least five servings of fruits and vegetables each day.

Stage of change for readiness to watch two hours or less of TV each day.