Imagem corporal e sua relação com obesidade e comportamento alimentar em adolescentes de 11 a 14 anos de idade

Abstract

Objective: To investigate the association between body image, the presence of overweight / obesity, and the presence of unwanted food. Methods: Crosssectional study, carried out in a representative sample of 976 adolescents aged 11 to 14 years in the city of Florianópolis. Results: Regarding body image, just over 1/5 (23.0%) of the adolescents were showing up with their own bodies, while 31.4% wished to increase the silhouette and 45.6% wished to decrease it. Of the adolescents who were overweight / obese, 10% were related to the body, and most wanted to decrease their silhouette (89.30%). Among the eutrophic, the prevalence of satisfaction increases, reaching almost 1/3 of the adolescents (28.6%), however, 44.8% of the eutrophic ones wished to increase the silhouette and 26.6% wished to decrease it. There was a significant difference between the prevalence of eutrophic and overweight / obese adolescents who were showing up with their body image and who wanted to increase or decrease the silhouette (p <0.001). The multivariate association between body image and overweight/obesity showed that the odds ratio for the outcome (overweight / obesity) is 8.65 higher among adolescents who wished to decrease their silhouette (p = 0.002; OR = 8.65; 95% CI = 4.42 - 16.96). Among those dissatisfied with their body image, there are greater odds ratios for the use of diuretics when compared to adolescents, with one more chance of using diuretics among those who wished to increase their silhouette (p = 0.044; OR = 2.94; 95% CI = 1.05 - 8.16) and more than the quadruple among those who wished to have a smaller silhouette (p = 0.015; OR = 4.61; 95% CI = 1.75 - 12, 14). Regarding the induction of vomiting, it was possible to observe significant values in the group that wished to decrease their silhouette (p <0.046; OR = 5.24; 95% CI = 1.05-26.13), with a five times greater chance when compared to teenagers present with body image. Conclusion: There was a decreased association between overweight / obesity both with the variables of unwanted eating behavior and with dissatisfaction with body image.