BACARDI-GASCON, M.; PEREZ-MORALES, M.ª E.    JIMENEZ-CRUZ, A.. A six month randomized school intervention and an 18-month follow-up intervention to prevent childhood obesity in Mexican elementary schools. []. , 27, 3, pp.755-762. ISSN 1699-5198.  https://dx.doi.org/10.3305/nh.2012.27.3.5756.

Background: The objective of this study, focused on parents and children to reduce sedentary behavior, consumption of soft drinks and high-fat and salt containing snacks, and increase the consumption of fruits and vegetables, was to assess the effect of a six month intervention and an 18 month follow-up intervention on the body mass index, food consumption and physical activity of 2^nd and 3^rd grade elementary school children. Methods: This was a randomized cluster controlled trial. School children were selected from 2nd and 3rd (n = 532) grade. Measurements: BMI z-score for age and sex was calculated and classified according to the WHO (2006). Abdominal obesity was defined as WC > 90^th of NHANES III. Results: At six months of the study differences were observed in BMI, -0.82 (p = 0.0001). At 24 months, results such as an increase of z-score BMI and waist circumference, a decrease in abdominal obesity, eighth per cent remission and an incidence of 18% of overweight and obesity were observed. Additionally, an increase (p = 0.007) in vegetable intake and physical activity (p = 0.0001) was also reported, along with a decrease in sedentary activities and the consumption of snacks high in fat and salt. Conclusions: The results of this study indicate that with a comprehensive intervention there is a positive response to lifestyle changes and a reduction of abdominal obesity.

: Randomized trial; Childhood obesity; Prevention; Mexican schools.

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