ABSTRACT
RESUMO Objetivo Adaptar a escala de silhuetas originais em cartões de papel e validar para uso digital. Métodos Participaram dessa pesquisa 88 jovens, os quais foram avaliados quanto ao índice de massa corporal (IMC) e questões sobre a imagem corporal com as escalas de silhuetas de papel e digital em relação ao corpo atual (IMC-A) e o corpo desejado (IMC-D). O processo de validação da escala digital se dá pela comparação entre o IMC com o IMC-A. Resultados Os resultados foram satisfatórios (0,70) para o grupo quando avaliado em conjunto e para o sexo masculino. No entanto, para o sexo feminino obtivemos um valor relativamente baixo, na concordância de Lin (0,64), mas com valores de ICC (0,89) e correlação de Spearman (0,85) aceitáveis. Conclusão As imagens no computador podem ser utilizadas para a avaliação da imagem corporal de jovens. Porém, é mais seguro realizar associações com questões referentes à prática de atividade física e do comportamento alimentar que, em conjunto, possam auxiliar na avaliação da insatisfação corporal.
ABSTRACT Objective Adapt The Brazilian Silhouette Scale, rendering them fit for digital use. Methods Eighty-eight young people took part in the survey, in which they were assessed regarding their body mass index (BMI) and topics related to body image, with the use of paper and digital silhouettes in relation to the current body (BMI-C) and the desired body (BMI-D). The process used to validate the digital scale is done by comparing the BMI with BMI-C. Results Were satisfactory (0.70) for the group, as a whole and for the males included. However, females showed a relatively low value at Lin's concordance (0.64), but with acceptable ICC (0.89) and Spearman (0.85) values. Conclusion The computer images can be used to assess body image for young people. However, it is safer to make associations with topics regarding physical activity and eating behavior, which together can help us assess body dissatisfaction.
ABSTRACT
Obese people tend to have low zinc circulation levels; this is not always related to zinc intake but can reflect the distribution of zinc in relation to the proportion of body fat and factors related to the inflammatory processes that cause obesity. The purpose of this study was to assess zinc distribution in 15 obese adolescent girls before and after a nutritional orientation program. Participants ranged from 14 to 18 years old (postpubescent) and had a body fat percent (BF%) of >35 %. Zinc nutritional status and other zinc-dependent parameters, such as superoxide dismutase (SOD) and insulin levels, were assessed by biochemical analysis of plasma and erythrocytes, salivary sediment, and urine. Samples were collected before and after 4 months of dietary intervention. Dual energy X-ray absorptiometry (DXA) was used to verify BF% both at the beginning and at the end of the study. Food consumption was assessed in ten individual food questionnaires throughout the study; food groups were separated on the questionnaires in the same way as suggested by some authors to develop the Healthy Eating Index (HEI) but with the addition of zinc. After 4 months of nutritional orientation, 78 % of the participants showed a decrease in BF%. Intraerythrocytic zinc increased over the study period, while salivary sediment zinc, SOD, insulin, and Zn urinary24 h/creatinine all decreased (p < 0.05). There was no difference in zinc intake throughout the study but participants did increase their consumption of fruits, dairy, and meats during the study (p < 0.05). There were inverse and statistically significant correlations between the increased levels of intraerythrocytic zinc and decreased levels of SOD. There was also a statistically significant correlation between BF% and Zn urinary 24h/creatinine, and SOD. All these parameters were diminished at the end of the study. The dietary intervention for obese adolescent girls is effective with decrease of BF that led to the redistribution of zinc in the body as shown by the changes in erythrocytes, plasma, salivary, urine zinc, as well as the complementary parameters of insulin and SOD. These changes were not affected by zinc intake.
