Comparison of Traditional and New Anthropometric Indices in Children and Adolescents Whose Body Fat Percentage Analysis was Performed with Bioelectrical Impedance Analysis

Abstract

Aim: The aim of this study is to investigate the predictive ability efficiency of body mass index (BMI), waist circumference, hip circumference, waist-to-height ratio, triponderal mass index (TMI), body adiposity index (BAI), pediatric body adiposity index (BAIp), body shape index (ABSI-adolescent), body roundness index (BRI), abdominal volume index (AVI), and conicity index (CI) in forecasting overweight/obesity and predicting percentage of body fat (PBF) in children and adolescents. Material and Methods: Children and adolescents aged 6-18 without chronic illnesses were included in the study. To assess body composition, bioelectrical impedance analysis (BIA) was employed as the reference method, and the cases were categorized into two groups: the lean/normal (Group 1) and overweight/obese (Group 2) groups. The evaluation of the data involved the use of descriptive statistics, independent t-test, Mann-Whitney U test, and Receiver Operating Characteristic (ROC) analysis. Results: A total of 466 cases (58.6% female, 41.4% male) were included in the study. The median age of the cases was 13.2 (10.1- 16.0) years. According to BIA, 10.7% of the cases (n=50) were classified as underweight, 33.7% (n=157) as normal weight, 10.9% (n=51) as overweight, and 44.6% (n=208) as obese. Overweight/obese individuals exhibited significantly higher values for BMI-SDS, waist circumference, hip circumference, waist-to-height ratio, TMI, BAI, BAIp, ABSI-adolescent, BRI, AVI, and CI (p<0.05). When referencing bioelectrical impedance analysis, BAIp [area under the curve (AUC) =0.980, 95% confidence interval (CI)=0.959-1.000, p=0.010], BMI-SDS (AUC=0.968, 95% CI=0.948-1.000, p=0.004), waist circumference (AUC=0.968, 95% CI=0.947-0.990, p=0.011), hip circumference (AUC=0.967, 95% CI=0.943-0.991, p=0.012), waist-to-height ratio (AUC=0.968, 9%5 CI=0.946-0.990, p=0.011), TMI (AUC=0.968, 95% CI=0.947-1.000, p=0.007), BRI (AUC=0.968, 95% CI=0.947-0.990, p=0.011), and AVI (AUC=0.969, 95% CI=0.948-0.990, p=0.011) demonstrated excellent performance in distinguishing overweight/obesity. Body adiposity index showed good performance (AUC=0.888, 95% CI=0.842-0.934, p=0.024), ABSI-adolescent (AUC=0.745, 95% CI=0.656-0.798, p=0.036), and CI showed poor performance (AUC=0.627, 95% CI=0.555-0.714, p=0.041). Conclusion: In children and adolescents, BAIp, BMI-SDS, waist circumference, hip circumference, waist-to-height ratio, TMI, BRI, and AVI can be utilized to predict PBF and assess overweight/obesity.

Keywords

• Children
• adolescent
• anthropometry
• body composition
• percentage of body fat

Biyoelektrik İmpedans Analiz ile Vücut Yağı Yüzdesi Analizi Yapılan Çocuk ve Adölesanlarda Geleneksel ve Yeni Antropometrik İndekslerin Karşılaştırılması

Abstract

Amaç: Bu çalışmanın amacı, çocuk ve adölesanlarda beden kütle indeksi (BKİ), bel çevresi, kalça çevresi, bel/boy oranı, triponderal kütle indeksi (TKİ), beden adipozite indeksi (BAİ), pediatrik beden adipozite indeksi (BAİp), beden şekil indeksi (ABSI-adölesan), beden yuvarlaklık indeksi (BRI), abdominal volüm indeksi (AVİ) ve konisite indeksinin (Kİ) fazla kilolu/obeziteyi tahmin etme ve beden yağı yüzdesini (PBF) öngörme etkinliğinin araştırılmasıdır. Gereç ve Yöntemler: Kronik hastalığı olmayan 6-18 yaş arasındaki çocuk ve adölesanlar dahil edildi. Vücut kompozisyonunu değerlendirmek için biyoelektrik impedans analizi (BİA) referans yöntem kullanılarak olgular zayıf/normal (grup 1) ve fazla kilolu/ obez (grup 2) olmak üzere 2 gruba ayrıldı. Verilerin değerlendirilmesinde tanımlayıcı istatistikler ile bağımsız t-testi, Mann-Whitney U ve İşlem Karakteristiği Eğrisi (ROC) analizi kullanıldı. Bulgular: Çalışmaya toplamda 466 olgu (%58,6 kız, %41,4 erkek) dahil edildi. Katılımcıların ortanca yaşı 13,2 (10,1-16,0) idi. BİA’ya göre olguların %10,7’si (n=50) zayıf, %33,7’u (n=157) normal, %10,9’u (n=51) fazla kilolu iken %44,6’ü (n=208) obez idi. Tüm kohortta, fazla kilolu/obezlerde BKİ-SDS, bel çevresi, kalça çevresi, bel/boy oranı, TKİ, BAİ, BAİp, ABSI-adölesan, BRI, AVİ ve Kİ anlamlı olarak yüksekti (p<0,05). Biyoelektrik impedans analizi referans alındığında, fazla kilolu/obeziteyi ayırt etmede, BAİp [eğri altında kalan alan (area under the curve=AUC) =0,980, %95 güven aralığı (GA)=0,959-1,000, p=0,010], BKİ-SDS (AUC=0,968, %95 GA=0,948-1,000, p=0,004), bel çevresi (AUC=0,968, %95 GA=0,947-0,990, p=0,011), kalça çevresi (AUC=0,967, %95 GA=0,943-0,991, p=0,012), bel/ boy oranı (AUC=0,968, %95 GA=0,946-0,990, p=0,011), TKİ (AUC=0,968, %95 GA=0,947-1,000, p=0,007), BRI (AUC=0,968, %95 GA=0,947-0,990, p=0,011) ve AVİ (AUC=0,969, %95 GA=0,948-0,990, p=0,011) mükemmel performans gösterdi. Beden adiposite indeksi iyi (AUC=0,888, %95 GA=0,842-0,934, p=0,024), ABSI-adölesan (AUC=0,745, %95 GA=0,656-0,798, p=0,036), Kİ ise zayıf performans gösterdi (AUC=0,627, %95 GA=0,555-0,714, p=0,041). Sonuç: Çocuk ve adölesanlarda, PBF’yi tahmin etmek ve fazla kilolu/obeziteyi değerlendirmek için BAİp, BKİ-SDS, bel çevresi, kalça çevresi, bel/boy oranı, TKİ, BRI ve AVİ kullanılabilir.

Keywords

• Çocuklar
• adölesanlar
• antropometri
• vücut kompozisyonu
• vücut yağ yüzdesi

Supporting Institution

Yazarlar herhangi bir finansal destek alınmadığını beyan etmektedirler.

Ethical Statement

Ordu Üniversitesi, Klinik Araştırmalar Etik Kurulu’ndan onay alınmıştır (Karar Numarası: 2023/176).

Thanks

Araştırmaya katılmaya gönüllü olan olgulara ve ailelerine teşekkür ederiz.

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