Is dual energy X-Ray absorptiometry related to functional body composition?

Abstract:Background: Dual energy X-ray absorptiometry (DXA) equipment is designed to provide information for animal and human research and clinical diagnosis. Its physical concepts are based on a molecular 3-compartment model of body composition. Objectives: To understand the physiological relation between DXA and functional body components at tissue system level (e.g. adipose tissue and muscle mass) two cross-validation studies were undertaken. Methods: The first study compared DXA fan beam scans with direct dissection and computed tomography (CT) scanning data at whole body level in a sample of 12 porcine carcasses. The second study related regional DXA variables with absolute tissue masses obtained by CT scanning in 11 humans. Results: Both studies show that DXA and functional body components are significantly interrelated (with r-values between 0.60 and 1.00, P

Publication year:2015

Keywords:body composition, nutrition, exercise, health, dual energy X ray absorptiometry, human, tissues, computer assisted tomography, diagnosis, validation study, dissection, compartment model, subcutaneous fat, muscle mass, weight, carcass, adipose tissue, Paramedicine

Accessibility:Closed

Review status:Peer-reviewed