| How well does the body adiposity index capture adiposity change in midlife women?: The SWAN fat patterning study. | |
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MedLine Citation:
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PMID: 23015468 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: The body adiposity index (BAI) is a proposed alternative to the body mass index (BMI) that has shown good cross-sectional agreement with percent body fat (%BF) in validation studies. The objective of this study was to examine the ability of BAI to track adiposity change over time in a biracial sample of midlife women. METHODS: African-American (n = 159) and Caucasian (n = 206) women, aged 42-60 years, at the Chicago site of the Study of Women's Health Across the Nation were followed from 2002 to 2008. BAI and BMI were calculated from measurements taken at annual assessments. %BF was quantified using whole-body dual-energy X-ray absorptiometry. Difference scores (BAI(Δ) , BMI(Δ) , and %BF(Δ) ) quantified adiposity change over a mean of 1.6 (SD = 0.7) years. Lin's concordance correlation (ρ(c) ) and Bland-Altman limits-of-agreement assessed agreement between BAI and %BF. RESULTS: In examining adiposity change, BAI(Δ) showed poor agreement with %BF(Δ) in the overall sample (ρ(c) = 0.41), African-American women (ρ(c) = 0.36), and Caucasian women (ρ(c) = 0.43). BAI(Δ) estimated %BF(Δ) with minimal bias (+0.4%) but low precision (±6.3%BF limits-of-agreement). %BF(Δ) had weaker correlations with BAI(Δ) (rs = 0.38-0.48) than with BMI(Δ) (rs = 0.48-0.59). BAI and BMI showed similar cross-sectional associations with %BF in the overall sample and within each race (rs > 0.74). CONCLUSIONS: We conclude that BAI is less accurate than BMI in tracking adiposity change in midlife women, and would not be a suitable replacement for BMI in most research applications involving adiposity change. |
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Authors:
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Bradley M Appelhans; Rasa Kazlauskaite; Kelly Karavolos; Imke Janssen; Howard M Kravitz; Sheila Dugan; John W Burns; Karla Shipp-Johnson; Lynda H Powell |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, N.I.H., Extramural Date: 2012-09-27 |
Journal Detail:
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Title: American journal of human biology : the official journal of the Human Biology Council Volume: 24 ISSN: 1520-6300 ISO Abbreviation: Am. J. Hum. Biol. Publication Date: 2012 Nov-Dec |
Date Detail:
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Created Date: 2012-10-18 Completed Date: 2013-03-25 Revised Date: 2013-05-02 |
Medline Journal Info:
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Nlm Unique ID: 8915029 Medline TA: Am J Hum Biol Country: United States |
Other Details:
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Languages: eng Pagination: 866-9 Citation Subset: IM |
Copyright Information:
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Copyright © 2012 Wiley Periodicals, Inc. |
Affiliation:
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Department of Preventive Medicine, Rush University Medical Center, Chicago, Illinois, USA. brad_appelhans@rush.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Absorptiometry, Photon
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methods* Adiposity / ethnology Adult African Americans Body Fat Distribution / methods* Body Mass Index* Chicago European Continental Ancestry Group Female Humans Middle Aged |
| Grant Support | |
ID/Acronym/Agency:
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AG012495/AG/NIA NIH HHS; AG012505/AG/NIA NIH HHS; AG012531/AG/NIA NIH HHS; AG012535/AG/NIA NIH HHS; AG012539/AG/NIA NIH HHS; AG012546/AG/NIA NIH HHS; AG012553/AG/NIA NIH HHS; AG012554/AG/NIA NIH HHS; HL067128/HL/NHLBI NIH HHS; NR004061/NR/NINR NIH HHS; U01 AG012495/AG/NIA NIH HHS; U01 AG012505/AG/NIA NIH HHS; U01 AG012531/AG/NIA NIH HHS; U01 AG012539/AG/NIA NIH HHS; U01 AG012546/AG/NIA NIH HHS; U01 AG012553/AG/NIA NIH HHS; U01 AG012554/AG/NIA NIH HHS; U01 NR004061/NR/NINR NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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