Korean J Fam Pract. 2017; 7(2): 293-297  https://doi.org/10.21215/kjfp.2017.7.2.293
Associations between Body Fat Measurement by Dual-Energy X-Ray Absorptiometry and Abdominal Obesity and Insulin Resistance in Korean Populations: Cross-Sectional Study from the Fourth (2008-2009) and Fifth (2010) Korea National Health And Nutrition Examination Survey (KNHANES)
Bitna Oh1, Yeon Jung Kim1, Tae Jong Kim2, Seung Min Jeong1, Hye Kyung Shin1, John Linton1,3,*
1Department of Family Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul; 2Department of Family Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju; 3International Health Care Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
John Linton
Tel: +82-2-2228-2330, Fax: +82-2-312-2846
E-mail: YOHAN@yuhs.ac
Received: May 13, 2016; Revised: August 9, 2016; Accepted: August 21, 2016; Published online: April 20, 2017.
© The Korean Academy of Family Medicine. All rights reserved.

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Background: The distribution, not only the amount, of body fat is known to affect insulin resistance (IR). We analyzed the risk of IR according to body fat distribution among Korean adults.
Methods: We included from the 2008-2010 Korea National Health and Nutrition Examination Survey database 10,158 adults who had dual-energy X-ray absorptiometry (DEXA) measurements. Each quintile of percent whole body fat (PWBF) and waist circumference (WC) was analyzed using multivariable logistic regression to evaluate the risk of IR.
Results: WC was strongly associated with IR in both sexes. The association was stronger when both PWBF and WC increased simultaneously than when each factor increased individually. In addition, a sex difference in the association between PWBF and IR was demonstrated.
Conclusion: In this sample of healthy Korean adults, WC and PWBF were both positively associated with IR, although the association was stronger for WC.
Keywords: Obesity; Insulin Resistance; Dual-Energy X-ray Absorptiometry; Waist Circumference; Whole Body Fat
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