G Bedogni1, F Agosti, A De Col, N Marazzi, A Tagliaferri, A Sartorio. 1. 1] Clinical Epidemiology Unit, Liver Research Center, AREA Science Park, Trieste, Italy [2] International Center for the Assessment of Nutritional Status (ICANS), University of Milan, Milan, Italy.
Abstract
BACKGROUND/ OBJECTIVES: We evaluated the agreement of air displacement plethysmography (ADP) and bioelectrical impedance analysis (BIA) with dual-energy X-ray absorptiometry (DXA) for the assessment of percent fat mass (%FM) in morbidly obese women. SUBJECTS/ METHODS: Fifty-seven women aged 19-55 years and with a body mass index (BMI) ranging from 37.3 to 55.2 kg/m(2) were studied. Values of %FM were obtained directly from ADP and DXA, whereas for BIA we estimated fat-free mass (FFM) from an equation for morbidly obese subjects and calculated %FM as (weight-FFM)/weight. RESULTS: The mean (s.d.) difference between ADP and DXA for the assessment of %FM was -2.4% (3.3%) with limits of agreement (LOA) from -8.8% to 4.1%. The mean (s.d.) difference between BIA and DXA for the assessment of %FM was 1.7% (3.3%) with LOA from -4.9% to 8.2%. CONCLUSION: ADP-DXA and BIA-DXA are not interchangeable methods for the assessment of body composition in morbidly obese women.
BACKGROUND/ OBJECTIVES: We evaluated the agreement of air displacement plethysmography (ADP) and bioelectrical impedance analysis (BIA) with dual-energy X-ray absorptiometry (DXA) for the assessment of percent fat mass (%FM) in morbidly obesewomen. SUBJECTS/ METHODS: Fifty-seven women aged 19-55 years and with a body mass index (BMI) ranging from 37.3 to 55.2 kg/m(2) were studied. Values of %FM were obtained directly from ADP and DXA, whereas for BIA we estimated fat-free mass (FFM) from an equation for morbidly obese subjects and calculated %FM as (weight-FFM)/weight. RESULTS: The mean (s.d.) difference between ADP and DXA for the assessment of %FM was -2.4% (3.3%) with limits of agreement (LOA) from -8.8% to 4.1%. The mean (s.d.) difference between BIA and DXA for the assessment of %FM was 1.7% (3.3%) with LOA from -4.9% to 8.2%. CONCLUSION:ADP-DXA and BIA-DXA are not interchangeable methods for the assessment of body composition in morbidly obesewomen.
Authors: Christian S Wright; Eileen M Weinheimer-Haus; James C Fleet; Munro Peacock; Wayne W Campbell Journal: J Nutr Date: 2015-10-07 Impact factor: 4.798
Authors: Giliane Belarmino; Raquel S Torrinhas; Priscila Sala; Lilian M Horie; Lucas Damiani; Natalia C Lopes; Steven B Heymsfield; Dan L Waitzberg Journal: BMC Obes Date: 2018-10-01