The criteria for sample inclusion were children who : a) were 10 - 12 year old; b)studied in grade 5 ; c) had a BMI - for - age > +1 S.D. [according to 2007 WHO growth reference : BMI for afe (Z-scores) 5 to 19 years],d) agreed to participate in this study, and e) had parental agreement to participate in this study.