Development of a dual-energy X-ray absorptiometry-derived body volume equation in Hispanic adults for administering a four-compartment model
| Autor: | Cherilyn N. McLester, John R. McLester, Michael R. Esco, Michael V. Fedewa, Brett S. Nickerson |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Male 0301 basic medicine Hydrostatic weighing Adolescent Body water Medicine (miscellaneous) 030209 endocrinology & metabolism Body volume Models Biological Body fat percentage Constant error Young Adult 03 medical and health sciences Absorptiometry Photon 0302 clinical medicine Animal science Reference Values medicine Humans Dual-energy X-ray absorptiometry Whole-body air displacement plethysmography 030109 nutrition & dietetics Nutrition and Dietetics medicine.diagnostic_test business.industry Body Weight Reproducibility of Results Hispanic or Latino Middle Aged Plethysmography Body Composition Lean body mass Female business |
| Zdroj: | British Journal of Nutrition. 123:1373-1381 |
| ISSN: | 1475-2662 0007-1145 |
| Popis: | The purpose of the present study was: (1) to develop a new dual-energy X-ray absorptiometry (DXA)-derived body volume (BV) equation with the GE-Lunar prodigy while utilising underwater weighing (UWW) as a criterion and (2) to cross-validate the novel DXA-derived BV equation (4C-DXANickerson), Wilson DXA-derived BV equation (4C-DXAWilson) and air displacement plethysmography (ADP)-derived BV (4C-ADP) in Hispanic adults. A total of 191 Hispanic adults (18–45 years) participated in the present study. The development sample consisted of 120 females and males (50 % females), whereas the cross-validation sample comprised of forty-one females and thirty males (n 71). Criterion body fat percentage (BF %) and fat-free mass (FFM) were determined using a four-compartment (4C) model with UWW as a criterion for BV (4C-UWW). 4C-DXANickerson, 4C-DXAWilson and 4C-ADP were compared against 4C-UWW in the cross-validation sample. 4C-DXANickerson, 4C-DXAWilson and 4C-ADP all produced similar validity statistics when compared with 4C-UWW in Hispanic males (all P > 0·05). 4C-DXANickerson also yielded similar BF % and FFM values as 4C-UWW when evaluating the mean differences (constant error (CE)) in Hispanic females (CE = –0·79 % and 0·38 kg; P = 0·060 and 0·174, respectively). However, 4C-DXAWilson produced significantly different BF % and FFM values (CE = 3·22 % and –2·20 kg, respectively; both P < 0·001). Additionally, 4C-DXAWilson yielded significant proportional bias when estimating BF % (P < 0·001), whereas 4C-ADP produced significant proportional bias for BF % and FFM (both P < 0·05) when evaluated in Hispanic females. The present study findings demonstrate that 4C-DXANickerson is a valid measure of BV in Hispanics and is recommended for use in clinics, where DXA is the main body composition assessment technique. |
| Databáze: | OpenAIRE |
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