Body adiposity index performance in estimating body fat in a sample of severely obese Brazilian patients

Nutrition Journal

Research

Lilian Mika Horie¹  Priscila Campos Sala¹  Dan L. Waitzberg¹  Raquel S. Torrinhas¹  Giliane Belarmino²  Steven B. Heymsfield³ 

[1] Department of Gastroenterology, Surgical Division, LIM 35.University of São Paulo School of Medicine, São Paulo, Brazil;Department of Gastroenterology, Surgical Division, LIM 35.University of São Paulo School of Medicine, São Paulo, Brazil;Nutrition Laboratory and Metabolic Surgery of the Digestive Tract, LIM 35 University of São Paulo, Medical School. Dr. Arnaldo avenue, 455, Cerqueira César. Postal code: 01246-903, São Paulo, Brazil;Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA;

关键词: Obesity;    Body fat;    Body composition;    Nutritional assessment;    Body adiposity index;    Air displacement plethysmography;   

DOI  :  10.1186/s12937-015-0119-8

 received in 2015-06-23, accepted in 2015-12-23,  发布年份 2015

来源: Springer

【 摘 要 】

Background/objectivesThe body adiposity index (BAI) estimates the amount of body fat (BF) in humans. In Mexican-American and African-American populations, BAI has performed better than body mass index (BMI). The aim of this study was to evaluate the performance of BAI in estimating percentage (BF%) in severely obese Brazilian patients, with air displacement plethysmography (ADP) used as the reference method.Subjects/methodsEstimation of BF% by ADP, anthropometric measurements (height, abdominal and hip circumferences, body weight, and BMI) and BAI calculation were performed in 72 obese subjects (BMI ≥ 30 kg/m2) aged 30–55 years.ResultsThe mean BF% estimates ± standard deviation were 52.1 ± 5.7 % for ADP and 47.7 ± 7.4 % for BAI, with a positive Pearson correlation (rp = 0.66) and a positive Lin’s concordance correlation (rc = 0.479) observed between these methods. The 95 % limits of individual agreement between BAI and ADP ranged from -5.769 % to 16.036 %, with BAI exhibiting an average positive bias of 5.13 % compared to the reference method. For each studied variable, BAI exhibited a systematic bias, as evidenced by a tendency for low BF% values to be overestimated.ConclusionFor Brazilian patients with severe obesity, BAI does not provide an accurate estimate of BF%.

【 授权许可】

CC BY   
© Belarmino et al. 2015