Cited by 128Body Composition Measurement TechniquesObesity, Physical Activity, DietBody Contouring and Surgery

Comparison of percent body fat estimates using air displacement plethysmography and hydrodensitometry in adults and children

Demerath, EW, Guo, SS, Chumlea, WC, Towne, B, Roche, AF, Siervogel, RM·2002·International Journal of Obesity

Abstract

Purpose The purpose of the study was to compare estimates of body density and percentage body fat from air displacement plethysmography (ADP) to those from hydrodensitometry (HD) in adults and children and to provide a review of similar recent studies.Methods Body density and percentage body fat (% BF) were assessed by ADP and HD on the same day in 87 adults aged 18-69 y (41 males and 46 females) and 39 children aged 8-17 y (19 males and 20 females). Differences between measured and predicted thoracic gas volumes determined during the ADP procedure and the resultant effects of those differences on body composition estimates were also compared. In a subset of 50 individuals (31 adults and 19 children), reliability of ADP was measured and the relative ease or difficulty of ADP and HD were probed with a questionnaire.Results The coefficient of reliability between %BF on day 1 and day 2 was 96.4 in adults and 90.1 in children, and the technical error of measurement of 1.6% in adults and 1.8% in children. Using a predicted rather than a measured thoracic gas volume did not significantly affect percentage body fat estimates in adults, but resulted in overestimates of percentage body fat in children. Mean percentage body fat from ADP was higher than percentage body fat from HD, although this was statistically significant only in adults (29.3 vs 27.7%, P<0.05). The 95% confidence interval of the between-method differences for all subjects was -7 to +9% body fat, and the root mean square error (r.m.s.e.) was approximately 4% body fat. In the subset of individuals who were asked to compare the two methods, 46 out of 50 (92%) indicated that they preferred the ADP to HD.Conclusion ADP is a reliable method of measuring body composition that subjects found preferable to underwater weighing. However, as shown here and in most other studies, there are differences in percentage body fat estimates assessed by the two methods, perhaps related to body size, age or other factors, that are sufficient to preclude ADP from being used interchangeably with underwater weighing on an individual basis.

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Crossref · 10.1038/sj.ijo.0801898

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Authors
Demerath, E., Guo, S., Chumlea, W., Towne, B., Roche, A., & Siervogel, R.
Affiliations
Wright State University (US)
Venue
International Journal of Obesity
Published
2002-03
Volume
26
Issue
3
Pages
389-397
ISSN
  • 0307-0565 (ISSN-L)
  • 1476-5497
OpenAlex
W2002461418
Cited by
128
References
21
Citations by year
2025: 3 · 2024: 1 · 2023: 2 · 2022: 4 · 2021: 7 · 2020: 4 · 2019: 3 · 2018: 8 · 2016: 6 · 2015: 8 · 2014: 8 · 2013: 5 · 2012: 8
FWCI
5.40
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Obesity (publishedVersion)
  • PubMed (publishedVersion)
Funders
Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD12252, R01HD012252, HD-27063)
Topics
  • Health Sciences › Medicine › Physiology › Body Composition Measurement Techniques
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
  • Health Sciences › Medicine › Surgery › Body Contouring and Surgery
Keywords
air displacement plethysmography, hydrodensitometry, underwater weighing, body fat percentage, body density, body composition, thoracic gas volume, measurement agreement, measurement reliability, children, adults
MeSH terms
Adipose Tissue, Adolescent, Adult, Aged, Air, Body Composition, Child, False Positive Reactions, Female, Humans, Immersion, Male, Middle Aged, Plethysmography, Residual Volume, Sensitivity and Specificity, Water, Patient Satisfaction

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