Medidas de localização da gordura corporal: uma avaliação da colinearidade com massa corporal, adiposidade e estatura em adolescentes do sexo feminino

Abstract

OBJECTIVE: To verify the correlation between body fat location measurements with the body mass index (BMI), body fat percentage (BF%) and height, according to the nutritional status in female adolescents. METHODS: A controlled cross-sectional study was carried out with 113 adolescents (G1: 38 with normal weight, but with high body fat level, G2: 40 with normal weight and G3: 35 overweight) from public schools in Viçosa-MG, Brazil. The following measures were assessed: weight, height, waist circumference (WC), umbilical circumference (UC), hip circumference (HC), thigh circumference, waist-to-hip ratio (WHR), waist-to-height ratio (WHtR), waist-to-thigh ratio (WTR), conicity index (CI), sagittal abdominal diameter (SAD), coronal diameter (CD), central (CS) and peripheral skinfolds (PS). The BF% was assessed by tetrapolar electric bioimpedance. RESULTS: The increase in central fat, represented by WC, UC, WHtR, SAD, CD and CS, and the increase in peripheral fat indicated by HC and thigh circumference were proportional to the increase in BMI and BF%. WC and especially the UC showed the strongest correlations with adiposity. Weak correlation between WHR, WTR, CI and CS/PS with adiposity were observed. The height showed correlation with almost all the fat location measures, being fair or weak with waist measurements. CONCLUSIONS: The results indicate colinearity between body mass and total adiposity with central and peripheral adipose tissue. We recommend the use of UC for assessing nutritional status of adolescents, as it showed the highest capacity to predict adiposity in each group, and also showed fair or weak correlation with height.

Indicadores antropométricos para identificar síndrome metabólica e fenótipo cintura hipertrigliceridêmica: uma comparação entre as três fases da adolescência

“… 15 Body mass index, an indicator widely used in pediatric clinical practice for the assessment of nutritional status, showed a worse performance than waist circumference and waist/height ratio, which is consistent with previous studies that demonstrated the superiority of waist circumference as an isolated measure or adjusted by height. 13 , 25 , 28 Additionally, waist circumference is less affected than body mass index by gender, ethnicity, and total fat. 28 …”

“… 22 Differences in MS and HW phenotype prevalence can be attributed to variations in the cutoffs used to classify central obesity, hypertriglyceridemia, and other components of MS between different studies and their differences regarding nutritional status, sexual maturation, race/ethnicity and life habits between regions. 12 , 25 …”

“…Studies have shown that the WC in adolescents is a good indicator of visceral abdominal fat content 28 and cardiovascular risk factors, 13 , 29 , 30 and it can be a simple tool to identify MS in children and adolescents. 13 , 23 , 25 In a study carried out in children and adolescents (8-18 years), waist/height ratio showed to be a slightly better predictor of MS (area under the curve=0.83 [0.78 to 0.89]) than WC (area under the curve=0.79 [0.73 to 0.85]) and BMI (area under the curve=0.79 [0.72 to 0.85]). 23 One of the advantages of waist/height ratio is the possibility of using the cutoff ≥0.5, which is applicable to both genders and all ages, to identify children and adolescents at cardiovascular risk.…”

“… 22 As diferenças nas prevalências de SM e do fenótipo CH podem ser atribuídas às variações nos pontos de corte usados para classificar obesidade central, hipertrigliceridemia e outros componentes da síndrome entre os diferentes estudos e suas diferenças no estado nutricional, maturação sexual, etnia e hábitos de vida entre as regiões. 12 and 25 …”

Hubungan resting metabolic rate (RMR) dan komposisi tubuh dengan kadar HbA1c pada obesitas

“…Klasifikasi obesitas di Indonesia mengikuti kriteria dari Riskesdas yaitu individu dengan IMT ≥ 27. [3][4][5] Obesitas terjadi karena ketidakseimbangan energi dalam jangka waktu lama dimana asupan energi (dalam bentuk makanan) lebih besar dibandingkan pengeluarannya. Salah satu cara untuk mencegah terjadinya obesitas adalah dengan mengatur pengeluaran energi.…”