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      Efectividad de una intervención en educación alimentaria y actividad física para prevenir obesidad en escolares de la ciudad de Casablanca, Chile (2003-2004) Translated title: Effectiveness of a dietary and physical activity intervention to prevent obesity in school age children


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          Background: With the aim of contributing to he Healthy Goal 2010 of reducing significantly the prevalence of childhood obestiy we developed and implemented during 2003 and 2004, a school-based obesity prevention intervention which included nutrition education and the promotion of physical activity. Aim To report the results of the intervention. Material and methods: The sample included 1760 children (1st to 7th grade) from 3 elementary public schools in Casablanca (experimental group) and 671 from a similar school located in Quillota, a neighboring city (control). Primary outcomes were body mass index (BMI) Zscore, the mile and shuttle-run tests and obesity prevalence. We also compared changes in waist circumference and triceps skinfold between both groups. Effectiveness of the intervention was assessed by analyzing separately the group *age* time interaction for the first 3 outcomes (follow-up-baseline), using a mixed model of covariance and by comparing variations in obesity prevalence between both groups. Results: There was a significant decline in BMI Z scores in experimental schools for both genders, but greater in boys (p <0.001 versus p =0.0034 in girls), while in controls, BMI Z scores increased. Obesity prevalence declined significantly in experimental schools; from 17 to 12.3% and from 14.1 to 10.3% in boys and girls respectively, while in the control group, it remained unchanged. Also, triceps skinfold in girls from Casablanca increased significantly ¡ess than that of control girls. Conclusion: This intervention proved that it is possible to reduce significantly the prevalence of obesity in Chilean schoolchildren attending public elementary schools (Rev Méd Chile 2008, 136:22-30)

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          Norma Técnica de Evaluación Nutricional del niño de 6 a 18 años

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            The effects of a health education intervention initiated at first grade over a 3 year period: physical activity and fitness indices.

            A health education intervention was carried out for three consecutive years on primary school Cretan children. Baseline measures were obtained from 962 pupils (509 boys and 453 girls) registered in first grade in 1992. The health education intervention programme was directed at both the children of the intervention group and their parents, and has a projected duration of 6 years. After the completion of the 3 years of intervention and while pupils were in fourth grade, measures were obtained for evaluation purposes on a random subsample of 393 pupils of the original cohort. Statistically greater improvements in the intervention, as opposed to the control group, were observed for both children's and parents' health knowledge, and children's standing broad jump, sit-ups (SUP), sit-and-reach, handgrip and endurance run test (ERT). Furthermore, time spent on moderate to vigorous physical activities out of school significantly increased for intervention group children compared to the control group. Statistically smaller increases in the intervention as opposed to the control group were observed in suprailiac skinfold and body mass index. The degree of improvement in both SUP and ERT related positively to parent's baseline physical activity score. Finally, the parental attitude of health-related hedonism related negatively to SUP improvement.
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              Norma técnica de evaluación nutritional del niño de 6 a 18 años


                Author and article information

                Revista médica de Chile
                Rev. méd. Chile
                Sociedad Médica de Santiago (Santiago, , Chile )
                January 2008
                : 136
                : 1
                : 22-30
                [03] orgnameUniversidad de Chile orgdiv1Facultad de Medicina orgdiv2Escuela de Nutrición Chile
                [01] orgnameUniversidad de Chile orgdiv1Instituto de Nutrición y Tecnología de los Alimentos (INTA) Chile
                [02] Londres orgnameLondon School of Hygiene and Tropical Science Inglaterra
                S0034-98872008000100003 S0034-9887(08)13600103

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 17, Pages: 9

                SciELO Chile


                Obesity, Children, prevention,Child, preschool,Body mass index


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