Modified body adiposity index for body fat estimation in severe obesity

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art_BERNHARD_Modified_body_adiposity_index_for_body_fat_estimation_2017.PDF (273.93 KB)
Citações na Scopus
16
Tipo de produção
article
Data de publicação
2017
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
WILEY
Autores
Citação
JOURNAL OF HUMAN NUTRITION AND DIETETICS, v.30, n.2, p.177-184, 2017
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
BackgroundThe body adiposity index (BAI) comprises a simple method for estimating body fat (BF) that needs to be validated in patients with severe obesity. The present study aimed to determine BAI accuracy with respect to the determination BF in patients with severe obesity. MethodsA cross-sectional prospective study comparing two methods for BF estimation was conducted in 433 patients with severe obesity between August 2012 to December 2014. BF was estimated by bioelectrical impedance analysis (BIA) with specific equations developed for BF estimation in patients with severe obesity and BAI. The BF estimation in 240 patients with severe obesity (Group 1: G1) was used to evaluate BAI limitations and to develop a specific equationin this population. The new equationproposed was validated in another 158 patients with severe obesity (Group 2: G2). ResultsThere was a significant difference between BF determination by BIA and BAI (P=0.039). The mean (SD) BF in G1 was 52.3%(6.1%) determined by BIA and 51.6%(8.1%) determined by BAI. Sex, waist-hip ratio (WHR) and obesity grade determined significant errors on BF estimation by BAI. A new equation(modified body adiposity index; MBAI) was developed by linear regression to minimise these errors [MBAI%=23.6+0.5x(BAI); add 2.2 if body mass index50kgm(-2) and 2.4 if WHR1.05]. The new equationreduced the difference [1.2% (5.9%), P<0.001 to 0.4%(4.12%), P=0.315] and improved the correlation (0.6-0.7) between methods. ConclusionsBAI present significant limitations in severe obesity and MBAI was effective for BF estimation in this population.
Palavras-chave
bioelectrical impedance analysis, body adiposity index, body composition, severe obesity, waist-hip ratio
URI
https://observatorio.fm.usp.br/handle/OPI/20035
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MGT
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - LIM/35
Artigos e Materiais de Revistas Científicas - ODS/03