| Estimation of skeletal muscle mass by bioelectrical impedance analysis. | |
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MedLine Citation:
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PMID: 10926627 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The purpose of this study was to develop and cross-validate predictive equations for estimating skeletal muscle (SM) mass using bioelectrical impedance analysis (BIA). Whole body SM mass, determined by magnetic resonance imaging, was compared with BIA measurements in a multiethnic sample of 388 men and women, aged 18-86 yr, at two different laboratories. Within each laboratory, equations for predicting SM mass from BIA measurements were derived using the data of the Caucasian subjects. These equations were then applied to the Caucasian subjects from the other laboratory to cross-validate the BIA method. Because the equations cross-validated (i.e., were not different), the data from both laboratories were pooled to generate the final regression equation SM mass (kg) = [(Ht<SUP>2</SUP>/ <IT>R</IT> x 0.401) + (gender x 3.825) + (age x -0. 071)] + 5.102 where Ht is height in centimeters; R is BIA resistance in ohms; for gender, men = 1 and women = 0; and age is in years. The r(2) and SE of estimate of the regression equation were 0.86 and 2.7 kg (9%), respectively. The Caucasian-derived equation was applicable to Hispanics and African-Americans, but it underestimated SM mass in Asians. These results suggest that the BIA equation provides valid estimates of SM mass in healthy adults varying in age and adiposity. |
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Authors:
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I Janssen; S B Heymsfield; R N Baumgartner; R Ross |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of applied physiology (Bethesda, Md. : 1985) Volume: 89 ISSN: 8750-7587 ISO Abbreviation: J. Appl. Physiol. Publication Date: 2000 Aug |
Date Detail:
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Created Date: 2000-09-15 Completed Date: 2000-09-15 Revised Date: 2007-11-14 |
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: 465-71 Citation Subset: IM; S |
Affiliation:
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School of Physical and Health Education, Queen's University, Kingston, Ontario, Canada. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Aged, 80 and over Body Weight / physiology Continental Population Groups Electric Impedance / diagnostic use* Female Humans Magnetic Resonance Imaging Male Middle Aged Models, Biological Muscle, Skeletal / anatomy & histology* Regression Analysis Reproducibility of Results |
| Grant Support | |
ID/Acronym/Agency:
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DK-42618/DK/NIDDK NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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