Dual-Energy X-Ray Absorptiometry Accurately Tracks Fat-Free Mass Changes in Older Men and Women: A Four-Compartment Molecular Model Validation

2011 ◽  
Vol 25 ◽  
pp. S16
Author(s):  
J R Moon ◽  
J R Stout ◽  
A E Smith ◽  
K L Kendall ◽  
D H Fukuda ◽  
...  
Keyword(s):  
Model Validation ◽  
Molecular Model ◽  
Older Men ◽  
Dual Energy ◽  
Fat Free Mass ◽  
Men And Women ◽  
X Ray ◽  
Older Men And Women

Concerns And Limitations Of Dual-Energy X-Ray Absorptiometry (Dxa) For The Evaluation Of Fat And Fat-Free Mass In Older Men And Women.

2010 ◽  
Vol 24 ◽  
pp. 1
Author(s):  
Jordan Moon ◽  
Jordan R Moon ◽  
Abbie E Smith ◽  
Kristina L Kendall ◽  
Jennifer L Graef ◽  
...  
Keyword(s):  
Older Men ◽  
Dual Energy ◽  
Fat Free Mass ◽  
Men And Women ◽  
X Ray ◽  
Older Men And Women

Comparison of quantitative ultrasound and dual-energy X-ray absorptiometry for prediction of 10-year absolute risk of fracture among older men and women

Bone ◽  
2009 ◽  
Vol 44 ◽  
pp. S367 ◽  
Author(s):  
A. Moayyeri⁎ ◽  
S. Kaptoge ◽  
R.N. Luben ◽  
S. Bingham ◽  
N.J. Wareham ◽  
...  
Keyword(s):  
Quantitative Ultrasound ◽  
Absolute Risk ◽  
Older Men ◽  
Dual Energy ◽  
Men And Women ◽  
Risk Of Fracture ◽  
X Ray ◽  
Older Men And Women

QDR 4500A DXA overestimates fat-free mass compared with criterion methods

2003 ◽  
Vol 94 (3) ◽  
pp. 959-965 ◽  
Author(s):  
Frances Tylavsky ◽  
Timothy Lohman ◽  
Barbara A. Blunt ◽  
Dale A. Schoeller ◽  
Thomas Fuerst ◽  
...  
Keyword(s):  
Lower Estimate ◽  
Dual Energy ◽  
Fat Free Mass ◽  
Component Model ◽  
Men And Women ◽  
Hydration Level ◽  
X Ray ◽  
Beam System ◽  
Four Component Model ◽  
Total Body

This study evaluated the accuracy with which the dual-energy X-ray absorptiometer (Hologic QDR 4500A) measured fat-free mass (FFM), fat mass (FM), and hydration of FFM. In a study of 58 men and women (ages 70–79 yr), the QDR 4500A was found to provide a systematically higher estimate of FFM and lower estimate of FM than a four-component model of body composition. A correction factor from this study was developed and applied to two other samples ( n = 13 and 37). We found mean corrected levels of FFM and FM to be equivalent to that obtained by the four-component model or total body water. In addition, the hydration of the corrected FFM was closer to the established hydration level in adult samples and that obtained from the four-component model. These findings suggest that the current calibration of the fan-beam system of the Hologic QDR 4500A provides an overestimate of FFM and underestimate of FM compared with reference methods.

scholarly journals Comparison of Dual-Energy X-Ray Absorptiometry (DXA) versus a Multi-frequency Bioelectrical Impedance (InBody 770) Device for Body Composition Assessment after a 4-Week Hypoenergetic Diet

2019 ◽  
Vol 4 (2) ◽  
pp. 23 ◽  
Author(s):  
Antonio ◽  
Kenyon ◽  
Ellerbroek ◽  
Carson ◽  
Burgess ◽  
...  
Keyword(s):  
Body Composition ◽  
Energy Intake ◽  
Body Fat ◽  
Fat Mass ◽  
Bioelectrical Impedance ◽  
Dual Energy ◽  
Fat Free Mass ◽  
Percent Body Fat ◽  
Men And Women ◽  
X Ray

The purpose of this investigation was to compare two different methods of assessing body composition (i.e., a multi-frequency bioelectrical impedance analysis (MF-BIA) and dual-energy x-ray absorptiometry (DXA)) over a four-week treatment period in exercise-trained men and women. Subjects were instructed to reduce their energy intake while maintaining the same exercise regimen for a period of four weeks. Pre and post assessments for body composition (i.e., fat-free mass, fat mass, percent body fat) were determined via the MF-BIA and DXA. On average, subjects reduced their energy intake by ~18 percent. The MF-BIA underestimated fat mass and percentage body fat and overestimated fat-free mass in comparison to the DXA. However, when assessing the change in fat mass, fat-free mass or percent body fat, there were no statistically significant differences between the MF-BIA vs. DXA. Overall, the change in percent body fat using the DXA vs. the MF-BIA was −1.3 ± 0.9 and −1.4 ± 1.8, respectively. Our data suggest that when tracking body composition over a period of four weeks, the MF-BIA may be a viable alternative to the DXA in exercise-trained men and women.

scholarly journals Determination of skeletal muscle and fat-free mass by nuclear and dual-energy X-ray absorptiometry methods in men and women aged 51–84 y

1999 ◽  
Vol 70 (2) ◽  
pp. 228-233 ◽  
Author(s):  
Ross D Hansen ◽  
Chand Raja ◽  
Ali Aslani ◽  
Ross C Smith ◽  
Barry J Allen
Keyword(s):  
Skeletal Muscle ◽  
Dual Energy ◽  
Fat Free Mass ◽  
Men And Women ◽  
X Ray
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