Estimation of Female Body Fat Percentage Based on Body Circumferences

Abstract

Introduction: The increase in the prevalence of obesity entails the need for accurate low-cost methods to estimate body fat percentage (BF%). Objective: The aim of this study was to develop mathematical models to estimate the BF% of young women from southern Brazil using inexpensive equipment, based on body circumferences (BC), considering the shortage of specific studies of this population. Methods: Subjects were women (n=130) aged 18 to 35 years (26.06±4.41 years), from the city of Curitiba. Body mass and stature were measured and used to estimate body mass index (BMI), while BC measurements of the arm, forearm, waist (narrowest point and umbilicus), abdomen, hip, thigh and leg were taken for use in the mathematical models. Dual-Energy X-Ray Absorptiometry (DXA) equipment recorded the BF%. Pearson's correlation was used for anthropometric variables and age in association with BF%. The indicators with best correlations were used to estimate linear regression mathematical models for prediction of BF%. The results of the two models and of nine anthropometric equations were compared to those obtained with the DXA using Pearson's correlation coefficient and paired t-test. Results: Age was not significantly correlated with BF% (r=0.113 and p=0.200). The BCs with the highest correlations with BF% were abdomen, hip and waist -umbilicus (r=0.697, 0.682, 0.660, respectively, and p<0.001). Eight equations showed positive correlation with BF%, but only the results obtained with the models estimated in this study did not differ from those of DXA, with paired t-test. Mathematical models were developed with three (r=0.744, r²=0.554; t=0.16 and p=0.869) and six (r=0.768, r²=0.591; t=-0.04 and p=0.967) anthropometric variables. Conclusion: The use of mathematical models developed for estimating BF% based on body circumference and body mass is considered feasible. Level of Evidence II; Diagnostic studies -Investigating a diagnostic test.Keywords: Body composition; X-ray absorptiometry; Anthropometry; Women. (26,06 ± 4,41 anos) (r = 0,697, 0,682, 0,660, respectivamente, com p < 0,001 (r = 0,697, 0,682, 0,660, respectivamente, con p < 0,001 RESUMO Introdução: O aumento da prevalência de obesidade implica a necessidade de métodos precisos e de baixo custo para estimar o percentual de gordura corporal (GC%). Objetivo: O objetivo deste estudo foi desenvolver modelos matemáticos para calcular o GC% de mulheres jovens do sul do Brasil, usando equipamentos de baixo custo, com base em circunferências corporais (CC), considerando a escassez de estudos específicos dessa população. Métodos: Foram avaliadas mulheres (n = 130) com idade de 18 a 35 anos

Development and Cross-Validation of Anthropometric Predictive Equations to Estimate Total Body Fat Percentage in Adult Women in Sri Lanka

“…Concordant with the current study findings, SFTs such as TrSFT, CaSFT, and SISFT [22][23][24] and circumferences such as WC and HC [25][26][27] have shown significant correlations with TBFP in studies done elsewhere. e equations Table 4: Equations developed to estimate TBFP of middle-aged women in Group A (n � 175).…”

“…* Correlations were significant at <0.001 level. developed based on the circumferences or SFTs in combination with weight, height, and age have shown the greater variance of TBFP [22][23][24][25][26][27] in adult women. Even though the higher variances (>50%) between the measured and predictive TBFPs were observed among the studies, significant deviations were observed.…”

Association of body image with the consumption of sugary drinks and nutritional status in adolescents

“…Para a avaliação antropométrica coletou o peso e estatura corporal para o cálculo de IMC; além da circunferência do pescoço, cintura e abdominal 22,31 . Na aferição do peso corporal (kg) utilizou-se uma balança digital com capacidade de 150kg (SONGHE-TOOLS, modelo SH0550) e precisão de 10g.…”

“…Já os garotos tiveram a circunferência de pescoço medida no ponto imediatamente inferior à proeminência laríngea 22 . Coletou-se a medida de cintura no ponto de menor circunferência abdominal e a medida de circunferência abdominal, na cicatriz umbilical 31 .…”

Vücut Yağ Miktarı / Yüzdesi Hesaplama Yöntemleri: Sistematik Derleme

“…Yüksek performansa sahip eşitlikler çoğunlukla antropometrik ölçümleri içermektedir. Akademik çalışma imkanlarının ve bu alanlarda çalışan uzman kişilerin artmasıyla birlikte son yıllarda, vücut yağ yüzdesinin belirlenmesi için yapılan yayın sayıları artmıştır (Aristizabal et al 2018;Ferenci and Kovács 2018;Hastuti et al 2018;Henry et al 2018;Salamunes et al 2018). Vücut kompozisyonu için vücut yağ yüzdesinin hesaplanması oldukça zahmetli ve pahalıdır.…”