| Segmental body composition assessed by bioelectrical impedance analysis and DEXA in humans. | |
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MedLine Citation:
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PMID: 9018509 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The present study assessed the relative contribution of each body segment to whole body fat-free mass (FFM) and impedance and explored the use of segmental bioelectrical impedance analysis to estimate segmental tissue composition. Multiple frequencies of whole body and segmental impedances were measured in 51 normal and overweight women. Segmental tissue composition was independently assessed by dual-energy X-ray absorptiometry. The sum of the segmental impedance values corresponded to the whole body value (100.5 +/- 1.9% at 50 kHz). The arms and legs contributed to 47.6 and 43.0%, respectively, of whole body impedance at 50 kHz, whereas they represented only 10.6 and 34.8% of total FFM, as determined by dual-energy X-ray absorptiometry. The trunk averaged 10.0% of total impedance but represented 48.2% of FFM. For each segment, there was an excellent correlation between the specific impedance index (length2/impedance) and FFM (r = 0.55, 0.62, and 0.64 for arm, trunk, and leg, respectively). The specific resistivity was in a similar range for the limbs (159 +/- 23 cm for the arm and 193 +/- 39 cm for the leg at 50 kHz) but was higher for the trunk (457 +/- 71 cm). This study shows the potential interest of segmental body composition by bioelectrical impedance analysis and provides specific segmental body composition equations for use in normal and overweight women. |
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Authors:
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D Bracco; D Thiébaud; R L Chioléro; M Landry; P Burckhardt; Y Schutz |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of applied physiology (Bethesda, Md. : 1985) Volume: 81 ISSN: 8750-7587 ISO Abbreviation: J. Appl. Physiol. Publication Date: 1996 Dec |
Date Detail:
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Created Date: 1997-04-09 Completed Date: 1997-04-09 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8502536 Medline TA: J Appl Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 2580-7 Citation Subset: IM |
Affiliation:
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Institute of Physiology, Faculty of Medicine, University of Lausanne, Switzerland. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Absorptiometry, Photon* Adolescent Adult Body Composition / physiology* Body Mass Index* Electric Impedance* Female Humans Middle Aged |
| Comments/Corrections | |
Comment In:
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J Appl Physiol. 1998 Jan;84(1):396-7
[PMID:
9451662
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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