[Bioelectrical impedance and visceral fat: a comparison with computed tomography in adults and elderly].

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Abstract

To evaluate the association between electrical bioimpedance analysis (BIA) and visceral fat (VF) in adult and elderly patients.

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Can abdominal bioelectrical impedance refine the determination of visceral fat from waist circumference?

Stuart Watson, John Newcombe, William Evans … (2009)

Ryo et al (2005 Diabetes Care 28 451-3) reported a new method for measuring the visceral fat area (VFA) by combining abdominal bioelectrical impedance analysis (BIA) with measurement of waist circumference (WC), but very few methodological details were provided. Furthermore, the study did not test the use of WC alone as an indicator of VFA even though others had previously reported a strong correlation. We sought to determine the optimal measurement technique and analysis for measuring VFA by abdominal BIA and WC. 18 volunteers (age 23-64 years) underwent measurement of WC, abdominal impedance (Bodystat 500 four-electrode system) and a single cross-sectional CT scan at the umbilicus. VFA derived using WC(3) and measurements of abdominal impedance from electrode pairs sited at the flank predicted the value of VFA measured by CT with correlation r = 0.904 (p < 0.0001); the optimizing power of WC was 3.3 (r = 0.905). However, the use of WC(1.9) alone, without involving BIA at all, provided a similar correlation (r = 0.923). Our small preliminary study shows that abdominal BIA is potentially a practicable non-invasive technique for measurement of VFA but casts doubt on whether it adds any value to the use of WC alone. Larger studies are now required to test this finding.

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Journal

Journal ID (iso-abbrev): Arq Bras Endocrinol Metabol

Title: Arquivos brasileiros de endocrinologia e metabologia

Publisher: FapUNIFESP (SciELO)

ISSN (Electronic): 1677-9487

ISSN (Print): 0004-2730

Publication date (Electronic): Feb 2013

Volume: 57

Issue: 1

Affiliations

[1 ] Conselho Nacional de Desenvolvimento Científico e Tecnológico (CEIAE-CNPq), Centro de Estudos e Intervenção na Área do Envelhecimento, Universidade Federal da Bahia (UFBA), Salvador, BA, Brasil. mieickemberg@yahoo.com.br

Article

Publisher Item ID: S0004-27302013000100004

DOI: 10.1590/s0004-27302013000100004

PubMed ID: 23440096

SO-VID: 2cf17540-5d2d-4129-922e-bf653fab6eef

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