Two promising community based approaches to obesity...

Two promising community based approaches to obesity prevention are BMI testing and community gardens. Community gardens and school food substitutions. School food substitutions and BMI testing. Increasing time for gym classes in school and school food substitutions.

Identify the experimental units or subjects, the explanatory variables (factors), the treatments, and the response variables. Most American adolescents don’t eat well and don’t exercise enough. Can middle schools increase physical activity among their students? Can they persuade students to eat better? Investigators designed a “physical activity intervention” to increase activity in physical education classes and during leisure periods throughout the school day. They also designed a “nutrition intervention” that improved school lunches and offered ideas for healthy home-packed lunches. Each participating school was randomly assigned to one of the interventions, both interventions, or no intervention. The investigators observed physical activity and lunchtime consumption of fat.viewed. Do these differences in the introduction affect whether the interview is completed?