| BODY COMPOSITION AT 6 MONTHS OF LIFE:COMPARISON OF AIR-DISPLACEMENT PLETHYSMOGRAPHY AND DUAL ENERGY X-RAY ABSORPTIOMETRY. | |
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MedLine Citation:
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PMID: 22522885 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Body composition assessment during infancy is important because it is a critical period for obesity risk development, thus valid tools are needed to accurately, precisely, and quickly determine both fat and fat-free mass.The purpose of this study was to compare body composition estimates using dual-energy x-ray absorptiometry (DXA) and air displacement plethysmography (ADP) atsix-month old.We assessed the agreement between whole body composition using DXA and ADP in 84 full-term average-for-gestational-age boys and girls usingDXA (Lunar iDXAv11-30.062; Infant whole body analysis enCore 2007 software, GE, Fairfield, CT) and ADP (Infant Body Composition System v3.1.0, COSMED USA, Inc., Concord, CA). Although the correlations between DXA and ADP for %fat (r = 0.925), absolute fat mass (r = 0.969), and absolute fat-free mass (r = 0.945) were all significant, body composition estimates by DXA were greater for both %fat (31.1 ± 3.6% vs. 26.7± 4.7%; P< 0.001) and absolute fat mass (2,284± 449vs. 1,921± 492grams; P< 0.001), and lowerfor fat-free mass (5,022± 532 vs. 5,188± 508grams; P< 0.001) vs. ADP.Inter-method differences in %fatdecreased with increasingadiposity and differences in fat-free mass decreased with increasing infant age. Estimates of body composition determined by DXA and ADP at six- months of age were highly correlated, but did differ significantly. Additional work is required to identify the technical basis for these rather large inter-method differences in infant body composition. |
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Authors:
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David A Fields; Ellen W Demerath; Angelo Pietrobelli; Paula C Chandler-Laney |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-4-23 |
Journal Detail:
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Title: Obesity (Silver Spring, Md.) Volume: - ISSN: 1930-7381 ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-4-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101264860 Medline TA: Obesity (Silver Spring) Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Pediatrics, University of Oklahoma Health Sciences Center and Harold Hamm Diabetes Center, Oklahoma City, OK, (USA). |
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