Vivian Siqueira Santos Gonçalves

Disponibilidade domiciliar de lipídeos para consumo e sua relação com os lipídeos séricos de adolescentes

Objective: To analyze the correlation between household availability of lipids to be consumed and the serum lipid profile in adolescents. Methods: This cross sectional study enrolled 95 adolescents aged 10–13 years, selected by random raffle in public schools of Vicosa, Southeast Brazil. A monthly shopping

Neck circumference as predictor of excess body fat and cardiovascular risk factors in adolescents

OBJECTIVE:To verify whether neck circumference can predict cardiovascular risk factors and excess body fat in adolescents.METHODS:This cross-sectional study included male and female adolescents aged 10 to 14 years from Vicosa, Minas Gerais. The following data were collected: anthropometric measurements, blood pressure, percentage of body fat according to dual energy X-ray absorptiometry, and levels of fasting glucose, fasting insulin, triglycerides, total cholesterol, high-density lipoprotein, and low-density lipoprotein. The anthropometric measurements were used for calculating indices and assessing nutritional status. The receiver operating characteristic curve tested whether neck circumference could predict cardiovascular risk. We also investigated how neck circumference related to the study parameters. The significance level was set at 5% (p 0.5; p<0.05, varying from 0.610 for high-density lipoprotein to 0.817 for blood pressure).CONCLUSION:Neck circumference was capable of predicting excess fat and cardiovascular risk factors in adolescents.

Prediction of body fat in adolescents: comparison of two electric bioimpedance devices with dual-energy X-ray absorptiometry

INTRODUCTION An accurate estimate of body composition is important in assessing and monitoring the nutritional status of adolescents. OBJECTIVES To compare the accuracy of 2 electrical bioimpedance devices with that of dual-energy X-ray absorptiometry (DXA) to predict body fat in Brazilian adolescents. METHODS We evaluated 500 adolescents aged between 10 and 19 years, stratified by sex and divided into overweight and non-overweight groups. The percentage of body fat (%BF) was estimated using 2 types of electrical bioimpedance devices: BIA1 (horizontal tetrapolar bioimpedance equipment) and BIA2 (vertical 8-electrode bioimpedance equipment), as well as by DXA. A Bland- Altman plot was used to calculate the total errors and standard errors of estimate. RESULTS Considering BMI for age, 19.4% were overweight and 47.4% as assessed by %BF of DXA were overweight. The %BF estimated by BIA2 correlated well (p < 0.05) with the %BF predicted by DXA, and only the total errors for BIA2 in the overweight group were acceptable (≤2.5%). The standard errors of estimate was <3.5%, with the lowest values observed for BIA2. Both BIA1 and BIA2 underestimated the %BF in overweight adolescents, while overestimating the %BF in male adolescents of normal weight. CONCLUSIONS The BIA2 was found to be more effective in the evaluation of body fat. Regardless of the method used, the results should be carefully interpreted when assessing the body composition of adolescents.

Síndrome do ovário policístico e fatores relacionados em adolescentes de 15 a 18 anos

OBJECTIVE To assess the factors related to the presence of polycystic ovary syndrome (PCOS) in adolescents. METHODS This was a cross-sectional study, with female adolescents from 15 to 18 years old, divided into: group 1 (with a medical diagnosis of PCOS) and group 2 (not diagnosed with PCOS). The height-for-age index and the body mass index were used for classifying the nutritional status, and a semi-structured questionnaire was applied. The Mann-Whitney test, Fishers exact test, Spearman correlation coefficients, and logistic regression were used. RESULTS This study evaluated 485 adolescents with an average age of 16.3 ± 0.9 years old. The prevalence of PCOS was 6.2%. No difference was found between the groups regarding anthropometric parameters and period of contraceptive use; however, there were differences regarding the age at menarche (p < 0.004). Older age at menarche was a protection factor against the syndrome. CONCLUSION An association was found between younger age at menarche and the development of the PCOS in adolescents.

Artigo originalSíndrome do ovário policístico e fatores relacionados em adolescentes de 15 a 18 anosPolycystic ovary syndrome and intervening factors in adolescents from 15 to 18 years old

OBJECTIVE To assess the factors related to the presence of polycystic ovary syndrome (PCOS) in adolescents. METHODS This was a cross-sectional study, with female adolescents from 15 to 18 years old, divided into: group 1 (with a medical diagnosis of PCOS) and group 2 (not diagnosed with PCOS). The height-for-age index and the body mass index were used for classifying the nutritional status, and a semi-structured questionnaire was applied. The Mann-Whitney test, Fishers exact test, Spearman correlation coefficients, and logistic regression were used. RESULTS This study evaluated 485 adolescents with an average age of 16.3 ± 0.9 years old. The prevalence of PCOS was 6.2%. No difference was found between the groups regarding anthropometric parameters and period of contraceptive use; however, there were differences regarding the age at menarche (p < 0.004). Older age at menarche was a protection factor against the syndrome. CONCLUSION An association was found between younger age at menarche and the development of the PCOS in adolescents.

Disponibilidad domiciliar de lípidos para consumo y su relación con los lípidos séricos de adolescentes

Objective: To analyze the correlation between household availability of lipids to be consumed and the serum lipid profile in adolescents. Methods: This cross sectional study enrolled 95 adolescents aged 10–13 years, selected by random raffle in public schools of Vicosa, Southeast Brazil. A monthly shopping

Household availability of lipids for consumption and its relationship with serum lipids in adolescents

Objective: To analyze the correlation between household availability of lipids to be consumed and the serum lipid profile in adolescents. Methods: This cross sectional study enrolled 95 adolescents aged 10–13 years, selected by random raffle in public schools of Vicosa, Southeast Brazil. A monthly shopping