Perfil antropométrico e adiposidade abdominal de escolares entre 6 a 10 anos de idade do Sul do Brasil

Abstract

-The aims of the present study were to assess the association of anthropometric measures with body mass index (BMI) and to verify the presence of abdominal adiposity in school children. This is a cross-sectional study conducted with 4,964 school children between 6 and 10 years of age registered in 345 schools from eight municipalities of the state of Santa Catarina (Brazil). The independent variables used were the following: subscapular (SSF) and triceps skinfold (TSF) thickness, arm circumference (AC), waist circumference (WC), hip circumference (HC), waist-to-hip ratio (WHR), and waist-to-height ratio (WHtR). BMI was used as the dependent variable. Unadjusted and adjusted associations were estimated using linear regression and expressed as a regression coefficient (β). All anthropometric measurements were controlled during adjusted analysis to remain within the p < 0.20 model. Abdominal adiposity was defined as WHtR ≥ 0.5. The mean BMI was 17.4 kg/m 2 (SD = 2.8) in males and 17.2 kg/m 2 (SD = 2.8) in females. The mean anthropometric measurements for males and females respectively were as follows: SSF = 7.2 and 8.3mm; TSF = 10.8 and 12.6mm; AC = 20.0 and 20.2cm; WC = 60.1 and 58.5cm; HC = 71.3 and 71.9cm; WHR = 0.84 and 0.81; WHtR = 0.45 and 0.44. All anthropometric measurements were positively associated with BMI in the unadjusted analysis of both sexes. In the adjusted analysis, associations among males were as follows: SSF (β = 0.05), AC (β = 0.17), WC (β = 0.19), and WHtR (β = 30.5). Associations among females were as follows: SSF (β = 0.19), AC (β = 0.17), WC (β = 0.13), WHR (β = -6.2), and WHtR (β = 32.1). The prevalence of abdominal adiposity was 11.9%. It was concluded that the anthropometric indicators SSF, AC, WC, and WHtR had a satisfactory relationship with BMI in school children of both sexes. These measurements could be used, in addition to BMI, to determine total and central adiposity. Key words: Adiposity; Anthropometry; Body composition; Body mass index; School children. foram, respectivamente: DCS=7,2 e 8,3mm; DCT=10,8 e 12,6mm; CBr=20,0 e 20,2cm; CC=60,1 e 58,5cm; CQ=71,3 e 71,9cm; RCQ=0,84 e 0,81; RCEst=0,45 e 0,44 DCS (β=0,05), CBr (β=0,17), CC (β=0,19) e RCEst (β=30,5). Nas meninas, continuaram associadas a DCS (β=0,19), CBr (β=0,17), CC (β=0,13), 2) Resumo -O estudo teve como objetivo avaliar a associação de medidas antropométricas com o Índice de Massa Corporal (IMC) e verificar a presença de adiposidade abdominal em escolares. Estudo transversal realizado entre 2007-2008, com 4.964 escolares de 6 a 10 anos de idade, matriculados em 345 escolas de oito municípios do Estado de Santa Catarina. As variáveis independentes utilizadas foram: dobras cutâneas subescapular (DCS) e tricipital (DCT), circunferências do braço (CBr), cintura (CC) e quadril (CQ) e relações cintura/quadril (RCQ) e cintura/estatura (RCEst). O IMC foi utilizado como variável dependente. Associações brutas e ajustadas foram estimadas mediante regressão linear e expressados como coeficiente de regressão (β)....

Evaluation of predictive measurements of excess weight in brazilian children

“…The results found allow us to affirm that the WC provides very relevant and consistent information on the central body fat deposition in children when compared with the BMI. Corroborating the findings of this study, the studies of Soar et al 23 and Ricardo et al 24 also found a strong correlation between WC and BMI.…”

“…The present study showed that 33.70% of children and adolescents had a waist/height ratio over 0.5, i.e., a large fat tissue deposition in the abdominal region. This value is much greater than one found by Ricardo et al 24 , who found that 11.90% of children between 6 and 10 years old had abdominal adiposity and is also greater than the one found in the McCarthy and Ashwell 25 study, in which a 11.70% prevalence was observed. According to Pereira et al 26 , the W/H index can be considered a good indicator of abdominal adiposity, even better than the isolated measurement of waist circumference, because it takes into consideration the height of the individual and allows us to establish a single cut-off point.…”

Propriedades diagnósticas e pontos de corte para predição de excesso de peso por indicadores antropométricos em adolescentes de Caracol, Piauí, 2011*

“…Regarding the use of the measure of AC to predict excess weight were found two studies in Brazil; 11,26 however, these studies were conducted with children from 6 to 10 years, which makes it difficult to comparability of cutoff points. A study done with adolescents from 10 to 14 years of South Africa 10 verified cutoff points for AC of 22,8cm and 23,6cm for boys and girls, respectively.…”

“…7 Other parameters have also been used for assessment of body composition, such as the waist/ height (WHR) 8,9 and arm circumference (AC). 10,11 However, these indicators are still poorly applied to predict the excess weight in children and adolescents, because for these critical values are not well established in the literature. 7 Therefore, the present study is justified by the lack of publications about the accuracy of anthropometric indicators to predict excess weight, as well as the cutting points to be used to in this condition.…”