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Body composition assessment in overweight women : Validation of air displacement plethysmography
Wingfield, Hailee L. Smith-Ryan, Abbie E. Woessner, Mary N. Melvin, Malia N. Fultz, Sarah N. Graff, Rachel M.
Wingfield, Hailee L.
Smith-Ryan, Abbie E.
Woessner, Mary N.
Melvin, Malia N.
Fultz, Sarah N.
Graff, Rachel M.
Abstract
Purpose
The purpose of this study was to evaluate the validity and reliability of air displacement plethysmography (ADP) compared to a dual energy x‐ray absorptiometry (DXA) criterion for body composition measurement in overweight and obese women (BMI ≥ 25·0 kg m2).
Subjects/Methods
Twenty‐four overweight and obese women (Mean ± SD; Age: 36·6 ± 12·0 years; Height: 166·4 ± 5·8 cm; Weight: 86·5 ± 14·2 kg; Body Fat: 38·5 ± 3·7%; BMI: 31·3 ± 5·5 kg m2) were tested after an 8‐h fast. Fat mass (FM), fat‐free mass (FFM) and percent body fat (%BF) were measured by ADP and compared to values determined by the DXA criterion. FFM from DXA was calculated as lean mass plus bone mineral content. A paired samples t‐test was used to test for significant differences in the body composition variables between methods. A one‐way ANOVA along with intraclass correlation coefficient (ICC), SEM,%SEM and MD was used to represent reliability.
Results
Validity data comparing ADP and DXA demonstrated no significant difference in FM (ADP‐DXA FM = 0·99 kg; P = 0·113), FFM (0·98 kg; P = 0·115) and %BF (1·56%; P = 0·540). Reliability data for ADP between the first and second trials showed no significant difference in FM (P = 0·168; ICC = 0·994; SEM = 0·668), FFM (P = 0·058; ICC = 0·973; SEM = 0·892) or %BF (P = 0·121; ICC = 0·971; SEM = 0·813).
Conclusions
For overweight and obese women, ADP was found to be a valid measure of FM, FFM and %BF when compared with DXA. The reliability of ADP was supported for all body composition variables.
Keywords
dual energy x-ray absorptiometry, fat-free mass, percent body fat, sensitivity, sex
Date
2014
Type
Journal article
Journal
Clinical Physiology and Functional Imaging
Book
Volume
34
Issue
1
Page Range
72-76
Article Number
ACU Department
Mary MacKillop Institute for Health Research
Faculty of Health Sciences
Faculty of Health Sciences
Collections
Relation URI
Source URL
Event URL
Open Access Status
Published as green open access
License
File Access
Controlled
Open
Open