Journal of Applied Physiology Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 84: 1475-1479, 1998;
8750-7587/98 $5.00
This Article
Right arrow Full Text Free
Right arrow Full Text (PDF) Free
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by McCrory, M. A.
Right arrow Articles by Bernauer, E. M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by McCrory, M. A.
Right arrow Articles by Bernauer, E. M.

Vol. 84, Issue 4, 1475-1479, April 1998

RAPID COMMUNICATION
Body composition by air-displacement plethysmography by using predicted and measured thoracic gas volumes

Megan A. McCrory, Paul A. Molé, Terri D. Gomez, Kathryn G. Dewey, and Edmund M. Bernauer

Departments of Nutrition and Exercise Science, University of California, Davis, California 95616-8669

The BOD POD, a new air-displacement plethysmograph for measuring human body composition, utilizes the inverse relationship between pressure and volume (Boyle's law) to measure body volume directly. The quantity of air in the lungs during tidal breathing, the average thoracic gas volume (Vtg), is also measured by the BOD POD by using a standard plethysmographic technique. Alternatively, the BOD POD provides the use of a predicted Vtg (Vtgpred). The validity of using Vtgpred in place of measured Vtg (Vtgmeas) to determine the percentage of body fat (%BF) was evaluated in 50 subjects (36 women, 14 men; ages 18-56 yr). There was no significant difference between Vtgmeas and Vtgpred (mean difference ± SE, 53.5 ± 63.3 ml) nor in %BF by using Vtgmeas vs. Vtgpred (0.2 ± 0.2 %BF). On an individual basis, %BF measured by using Vtgmeas vs. Vtgpred differed within ±2.0% BF for 82% of the subjects; maximum differences were -2.9 to +3.0% BF. For comparison, data from 24 subjects who had undergone hydrostatic weighing were evaluated for the validity of using predicted vs. measured residual lung volume (VRpred vs. VRmeas, respectively). Differences between VRmeas and VRpred and in %BF calculated by using VRmeas vs. VRpred were significant (187 ± 46 ml and 1.4 ± 0.3% BF, respectively; P < 0.001). On an individual basis, %BF determined by using VRmeas vs. VRpred differed within ±2.0% BF for 46% of the subjects; maximum differences were -2.9 to +3.8% BF. With respect to %BF measured by air displacement, our findings support the use of Vtgpred for group mean comparisons and for purposes such as screening in young to middle-aged individuals. This contrasts with the use of VRpred in hydrostatic weighing, which leads to significant errors in the estimation of %BF. Furthermore, although the use of Vtgpred has some application, determining Vtgmeas is relatively simple in most cases. Therefore, we recommend that the use of Vtgmeas remain as standard experimental and clinical practice.

fractional lung volumes; hydrostatic weighing; validity; densitometry; body volume


This article has been cited by other articles:


Home page
 Am. J. Physiol. Endocrinol. Metab.Home page
M. Siervo, G. Fruhbeck, A. Dixon, G. R. Goldberg, W. A. Coward, P. R. Murgatroyd, A. M. Prentice, and S. A. Jebb
Efficiency of autoregulatory homeostatic responses to imposed caloric excess in lean men
Am J Physiol Endocrinol Metab, February 1, 2008; 294(2): E416 - E424.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Clin. Nutr.Home page
A. M Gaba, K. Zhang, K. Marder, C. B Moskowitz, P. Werner, and C. N Boozer
Energy balance in early-stage Huntington disease
Am. J. Clinical Nutrition, June 1, 2005; 81(6): 1335 - 1341.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
M. E. Huso, J. S Hampl, C. S. Johnston, and P. D. Swan
Creatine supplementation influences substrate utilization at rest
J Appl Physiol, December 1, 2002; 93(6): 2018 - 2022.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Clin. Nutr.Home page
M. D Haub, A. M Wells, M. A Tarnopolsky, and W. W Campbell
Effect of protein source on resistive-training-induced changes in body composition and muscle size in older men
Am. J. Clinical Nutrition, September 1, 2002; 76(3): 511 - 517.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Clin. Nutr.Home page
D. A Fields, M. I Goran, and M. A McCrory
Body-composition assessment via air-displacement plethysmography in adults and children: a review
Am. J. Clinical Nutrition, March 1, 2002; 75(3): 453 - 467.
[Abstract] [Full Text] [PDF]

Home page
 Diabetes CareHome page
L. J.O. Joseph, T. A. Trappe, P. A. Farrell, W. W. Campbell, K. E. Yarasheski, C. P. Lambert, and W. J. Evans
Short-Term Moderate Weight Loss and Resistance Training Do Not Affect Insulin-Stimulated Glucose Disposal in Postmenopausal Women
Diabetes Care, November 1, 2001; 24(11): 1863 - 1869.
[Abstract] [Full Text] [PDF]

Home page
 J. Nutr.Home page
K. J. Ellis
Selected Body Composition Methods Can Be Used in Field Studies
J. Nutr., May 1, 2001; 131(5): 1589S - 1595.
[Abstract] [Full Text]

Home page
 Physiol. Rev.Home page
K. J. Ellis
Human Body Composition: In Vivo Methods
Physiol Rev, April 1, 2000; 80(2): 649 - 680.
[Abstract] [Full Text] [PDF]

Home page
 Arch. Dis. Child.Home page
O. Dewit, N J Fuller, M. S Fewtrell, M Elia, and J C K Wells
Whole body air displacement plethysmography compared with hydrodensitometry for body composition analysis
Arch. Dis. Child., February 1, 2000; 82(2): 159 - 164.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online