Air Displacement Plethysmography versus Dual-Energy X-Ray Absorptiometry in Underweight, Normal-Weight, and Overweight/Obese Individuals
Autor: | David W. Lowry, A. Janet Tomiyama |
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Přispěvatelé: | Thearle, Marie |
Jazyk: | angličtina |
Rok vydání: | 2015 |
Předmět: |
Adult
Male medicine.medical_specialty Hydrostatic weighing General Science & Technology Population lcsh:Medicine Whole Body and over Overweight Body fat percentage Absorptiometry Photon Weight loss medicine 80 and over Humans Obesity Absorptiometry education lcsh:Science Dual-energy X-ray absorptiometry Plethysmography Whole Body Aged Nutrition 2. Zero hunger Aged 80 and over education.field_of_study Multidisciplinary medicine.diagnostic_test business.industry lcsh:R Middle Aged Photon 3. Good health Surgery Plethysmography Physical therapy Female lcsh:Q medicine.symptom Underweight business Body mass index Research Article |
Zdroj: | Lowry, DW; & Tomiyama, AJ. (2015). Air Displacement Plethysmography versus Dual-Energy X-Ray Absorptiometry in Underweight, Normal-Weight, and Overweight/Obese Individuals. PLOS ONE, 10(1), e0115086. doi: 10.1371/journal.pone.0115086. UCLA: Retrieved from: http://www.escholarship.org/uc/item/7cs8540z PLoS ONE, Vol 10, Iss 1, p e0115086 (2015) PloS one, vol 10, iss 1 PLoS ONE |
DOI: | 10.1371/journal.pone.0115086. |
Popis: | BACKGROUND: Accurately estimating fat percentage is important for assessing health and determining treatment course. Methods of estimating body composition such as hydrostatic weighing or dual-energy x-ray absorptiometry (DXA), however, can be expensive, require extensive operator training, and, in the case of hydrostatic weighing, be highly burdensome for patients. Our objective was to evaluate air displacement plethysmography via the Bod Pod, a less burdensome method of estimating body fat percentage. In particular, we filled a gap in the literature by testing the Bod Pod at the lower extreme of the Body Mass Index (BMI) distribution. FINDINGS: Three BMI groups were recruited and underwent both air displacement plethysmography and dual-energy x-ray absorptiometry. We recruited 30 healthy adults at the lower BMI distribution from the Calorie Restriction (CR) Society and followers of the CR Way. We also recruited 15 normal weight and 19 overweight/obese healthy adults from the general population. Both Siri and Brozek equations derived body fat percentage from the Bod Pod, and Bland-Altman analyses assessed agreement between the Bod Pod and DXA. Compared to DXA, the Bod Pod overestimated body fat percentage in thinner participants and underestimated body fat percentage in heavier participants, and the magnitude of difference was larger for underweight BMI participants, reaching 13% in some. The Bod Pod and DXA had smaller discrepancies in normal weight and overweight/obese participants. CONCLUSIONS: While less burdensome, clinicians should be aware that Bod Pod estimates may deviate from DXA estimates particularly at the lower end of the BMI distribution. |
Databáze: | OpenAIRE |
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