IRCT2014051017639N1 IRCT 2015-07-13 Vice chancellor for research, Isfahan University of Medical Science Nutrition education among obese adolescents Comparative effectiveness of theory-based Educational intervention program and common education on anthropometric parameters, biochemical and blood pressure in obese adolescents. 2009-10-23 anticipated 100 Complete https://irct.ir/trial/16170 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Other design features: After screening the eligible participants were randomly assigned to the control group or the intervention group by simple randomization. In this case, all of the 100 participants numbered from 1 to 100 and divided in two groups based on odds and even numbers. Then, by coin toss the participants with odds number were considered as intervention group and the participants with even number were considered as control group. N/A Obesity in adolescents. Intervention 1: Intervention1: Educational intervention based on education model (HBM) The intervention group (n=46) participated in 12 educational sessions (one session/week) including educational lecture, group discussion, question-answer, pamphlet, booklet, power-point slide show on physical activity and its advantages, obesity and its consequences, susceptibility of obese people to cardiovascular disease and diabetes and healthy eating key-points based on the food guide pyramid. Intervention 2: Intervention 2: The control group was assigned a usual program which included simple recommendations to reduce the intake of energy-dense foods such as fried foods, fast foods, cream, sugar and soft drinks in their diet and increasing the consumption of vegetables and fruits and doing more physical activity.