title: Body Fat Mass Assessment: A Comparison between an Ultrasound-Based Device and a Discovery A Model of DXA.
abstract: Objective. To examine measurement of body composition by ultrasound compared with a reference technique:dual energy X-ray absorptiometry (DXA). We evaluated the accuracy of a portable ultrasound-based device in estimating total body fat mass with those assessed by DXA in adult. Methods. Body fat mass has been estimated using a portable ultrasound-based device in comparison with a contemporary reference DXA apparatus: the Hologic Discovery A. Anthropometric data has been assessed in order to maximize the output of the software associated with the ultrasound-based device. A cross-validation between ultrasound technique (US) and DXA was developed in this study. Total body fat mass estimated by ultrasound was compared with this DXA model in a sample of 83 women and 41 men. Results. Ultrasound technique (US) of body fat (BF) was better correlated with DXA in both women (r (2) = 0.97, P < 0.01) and men (r (2) = 0.92, P < 0.01) with standard errors of estimates (SEE) being 2.1 kg and 2.2 kg, respectively. Conclusion. The use of a portable device based on a US produced a very accurate BF estimate in relation to DXA reference technique. As DXA absorptiometry techniques are not interchangeable, the use of our ultrasound-based device needs to be recalibrated on a more contemporary DXA.
authors.affiliation: Department of Human Evolution, French National Center for Scientific Research, UPR 2147-CNRS, 44 Amiral Mouchez Street, 75014 Paris, France.
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Pineau
authors.affiliation: Department of Human Evolution, French National Center for Scientific Research, UPR 2147-CNRS, 44 Amiral Mouchez Street, 75014 Paris, France.
authors.forename: Loïc
authors.initials: L
authors.lastname: Lalys
authors.affiliation: Department of Public Health Sciences ,University of Modena and Reggio Emilia, Campi Road 287, 41100 Modena, Italy.
authors.forename: Massimo
authors.initials: M
authors.lastname: Pellegrini
authors.affiliation: Department of Public Health Sciences ,University of Modena and Reggio Emilia, Campi Road 287, 41100 Modena, Italy.
authors.forename: Nino Carlo
authors.initials: NC
authors.lastname: Battistini