1. Body adiposity index performance in estimating body fat in a sample of severely obese Brazilian patients.
- Author
-
Belarmino, Giliane, Horie, Lilian Mika, Sala, Priscila Campos, Torrinhas, Raquel S., Heymsfield, Steven B., and Waitzberg, Dan L.
- Subjects
OBESITY ,BODY composition ,FAT ,PLETHYSMOGRAPHY ,BLOOD circulation ,MORBID obesity ,ADIPOSE tissues ,BODY weight ,HUMAN body composition ,BODY mass index ,PHOTON absorptiometry ,DIAGNOSIS - Abstract
Background/objectives: 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.Subjects/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.Conclusion: For Brazilian patients with severe obesity, BAI does not provide an accurate estimate of BF%. [ABSTRACT FROM AUTHOR]- Published
- 2015
- Full Text
- View/download PDF