title: Body adiposity index performance in estimating body fat in a sample of severely obese Brazilian patients.
abstract: OBJECTIVE
  The 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.
  
  
  METHODS
  Estimation 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/m(2)) aged 30-55 years.
  
  
  RESULTS
  The 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.
  
  
  CONCLUSIONS
  For Brazilian patients with severe obesity, BAI does not provide an accurate estimate of BF%.
authors.affiliation: Department of Gastroenterology, Surgical Division, LIM 35.University of São Paulo School of Medicine, São Paulo, Brazil. giliane85@hotmail.com.|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. giliane85@hotmail.com.
authors.forename: Giliane
authors.initials: G
authors.lastname: Belarmino
authors.affiliation: Department of Gastroenterology, Surgical Division, LIM 35.University of São Paulo School of Medicine, São Paulo, Brazil. mikahorie@gmail.com.
authors.forename: Lilian Mika
authors.initials: LM
authors.lastname: Horie
authors.affiliation: Department of Gastroenterology, Surgical Division, LIM 35.University of São Paulo School of Medicine, São Paulo, Brazil. sala.priscila@gmail.com.
authors.forename: Priscila Campos
authors.initials: PC
authors.lastname: Sala
authors.affiliation: Department of Gastroenterology, Surgical Division, LIM 35.University of São Paulo School of Medicine, São Paulo, Brazil. torrinhas@uol.com.br.
authors.forename: Raquel S
authors.initials: RS
authors.lastname: Torrinhas
authors.affiliation: Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA. steven.heymsfield@pbrc.edu.
authors.forename: Steven B
authors.initials: SB
authors.lastname: Heymsfield
authors.affiliation: Department of Gastroenterology, Surgical Division, LIM 35.University of São Paulo School of Medicine, São Paulo, Brazil. dan.waitzberg@gmail.com.
authors.forename: Dan L
authors.initials: DL
authors.lastname: Waitzberg
mesh_terms: D015502:Absorptiometry, Photon; D000273:Adipose Tissue; D050154:Adiposity; D000328:Adult; D050218:Body Fat Distribution / Q000379:methods*; D015992:Body Mass Index; D001835:Body Weight; D001938:Brazil; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000175:diagnosis*; D055815:Young Adult