Background: Childhood obesity presents alarming numbers in our country, being even higher in the population of immigrant origin. The main objective was to analyse the excess weight numbers both in native adolescents and in those children of immigrants and to determine the ethnic influence on lifestyle habits that could condition these differences in weight overload.
Methods: Adolescents from 1st year of Obligatory Secondary Education (E.S.O.) participated; somatometry was determined and classified according to BMI (with WHO references) and parental origin. Parents completed the survey on healthy habits (ENHASA). An analysis of variance was performed for each of the 4 dimensions of the questionnaire.
Results: A total of 416 adolescents participated (12.8±0.62 years). Excess weight was detected in 41.2% of the participants, with significant differences between groups (p 0.018): 36.7% in Spanish, 42.9% in North Africa and 58.2% in South America. The ANOVA analysis showed differences in the section "physical activity" (p 0.003), highlighting the maximum disparity in the performance of extracurricular sports activities, with a lower score in both non-native groups.
Conclusion: We found significant differences according to ethnic origin in the number of overweight children and the amount of physical activity they do; South American adolescents are the most sedentary. We must design interventions that guarantee the access of all adolescents to sports activities to prevent the development of obesity.
Keywords: Adolescence; Adolescencia; Características culturales; Cultural characteristics; Ethnic groups; Grupos étnicos; Hábitos de vida; Lifestyle; Obesidad; Obesity; Overweight; Prevención; Prevention; Sobrepeso.
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