| Non-invasive approach for body composition measurement: differential buoyancy method and correction for water loss. | |
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MedLine Citation:
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PMID: 7654966 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The Differential Buoyancy method uses Archimedes' principle to non-invasively determine body fat percentage by measuring the subject's weight in breathable high and low densities atmospheres. We currently use both air and helium/oxygen mixtures in our experiments[1]. When the method was tested on rats, an anomaly was observed. As helium/oxygen mixture was admitted to the weighing chamber, while the atmospheric density monotonically decreased, the rat's weight first increased but then after several minutes decreased. Water loss from the rat's body was found to be the main cause of this anomaly. Therefore it was necessary to compensate for this water loss. Consistent with experimental findings the water loss was modeled as a constant rate process, and determined experimentally from weight measurements at the beginning and at the end of the experiment. Making these corrections allowed for accurate predictions of the rat's volume and body fat percentage. |
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Authors:
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R Hanania; S Dubin; S Zietz; A Naim; B Schrope |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Biomedical sciences instrumentation Volume: 31 ISSN: 0067-8856 ISO Abbreviation: Biomed Sci Instrum Publication Date: 1995 |
Date Detail:
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Created Date: 1995-10-05 Completed Date: 1995-10-05 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0140524 Medline TA: Biomed Sci Instrum Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 219-24 Citation Subset: IM |
Affiliation:
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Biomedical Engineering and Science Institute, Drexel University, Philadelphia, PA 19104, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adipose Tissue
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anatomy & histology Animals Biomedical Engineering Body Composition* Humans Models, Biological Rats Water |
| Chemical | |
Reg. No./Substance:
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7732-18-5/Water |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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