Article abstract: Introduction : Considering the increasing trend of obesity and the effects of physical activity on the incidence of childhood obesity, and on the other hand the limitations of families for carrying their children to sport classes, and the limited time of students for participation in such classes achieving to appropriate ways for education of physical activity at home is justified to be necessary.
Material : This non pharmacological trial was conducted during 6 months among 105 obese children and adolescents who were randomly assigned in 3 groups with 35 participants. Dietary counseling and behavioral management was similar for all groups, but in one group physical activity was conducted by attending to sport classes two times a week, the second group were trained for physical activity by educational CD and the third group were trained by face to face education. Anthropometric indexes were measured before and after intervention.
Results : After the trial the mean body mass index (BMI) decreased significantly in the group attending sport classes and the group trained by CD. The change in variables was not significant between the three group studies .
Coclusion : The finding of our study showed that training by CD can be as effective as face to
Article keyWords: Physical activity education , children and adolescents, obesity, body mass index