An education intervention was implemented in 5 schools including 516 children, 360 parents and 240 teachers.

The Pedagogical Intervention last two and a half years. In children, the intervention included class activities (1/week) and the use of educational materials for the development of pedagogical activities (posters and educative guide).

In parents included 3 workshops/year (2 hours each) about the areas of the intervention; sending healthy notes (1/month) and celebration of healthy family day (1/year).

In teachers included 3 workshops/year (2 hours each) about the areas of the intervention; planning and realization of pedagogical activities to develop with the students (1/week) and follow-up visits to school (1/month).

The control group consisted of 4 schools including 354 children, 305 parents and 110 teachers.

The activities in control group last two and a half years. Children received the standard curriculum in health and physical activity of the national Ministry of Education.

In parents and teachers included 3 workshops/year (2 hours each) about the first aid and accident prevention.

The educational intervention helped to increase the knowledge of attitudes, and habits of healthy lifestyle in children, parents and teachers and it was based on health promotion models and social cognitive theory, to be articulated with the Institutional Educational Project through the pedagogical component that integrates three areas, physical activity, healthy eating, and the knowledge of the body and the heart with the dynamics of the educative community.

The program covered self-care of the body and heart, healthy diet, and physical activity

The energy expenditure (Kilocalories/day), in children from Kindergarten to grade 2 of elementary school, generated by physical activity was evaluated using accelerometers during 4 consecutive days, 24hours/day (2 weekend days and two schooldays) through an Actiheart® 4 type accelerometer.

Possible differences between changes in active energy expenditure means was assessed using test t-test. Multi-variable models were performed to adjust for potential con-founders.

A food frequency survey (ENSIN 2010) was used in children from Kindergarten to grade 2 of elementary school.

Healthy foods consumptions were defined as the accomplishment of 3-4 of the 4 measured components (intake of Fruits and vegetables ≥3 times a day, Fiber: ≥3 times a day, Fish: ≥2 times a week, Sugary beverages: ≤ 1 time a day).

Possible differences between changes in the proportion of children with healthy foods consumption was assessed using chi2 test. Multi-variable models were performed to adjust for potential con-founders.

Using the Quetelet index, that considers the BMI as the relationship between the body weight given in kg and the square size taken in meters.

Possible differences between changes in BMI means was assessed using test t-test. Multi-variable models were performed to adjust for potential con-founders.