Korean J Obes 2014; 23(4): 245-249
Published online December 30, 2014
Copyright © Korean Society for the Study of Obesity.
Yoo-Jung Lee, Hyeon-Ju Kim, Mi-Hee Kong*
Department of Family Medicine, School of Medicine, Jeju National University & Hospital, Jeju, Korea
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Background: The decrease in testosterone level during the aging process is associated with decrease in muscle mass and increase in visceral fat and body fat percent. The present study investigates the relationship between various obesity indices and level of testosterone according to different age groups. Methods: A total of 156 individuals who underwent specific health exams in a local university hospital from January 2011 to July 2013 were included. Obesity indices were represented as BMI, waist circumference (WC), body fat percent (BFP), visceral fat area (VFA), subcutaneous fat area (SFA), and visceral to subcutaneous ratio (VSR). Subjects were categorized into four age groups: 35-44 years, 45-54 years, 54-64 years, and over 65. Results: In almost all age groups obesity indices showed an inverse relation to testosterone level while VSR showed no significant association with either total or free testosterone levels. All obesity indices (BMI, WC, BFP, VFA, and SFA), except for VSR, manifested a statistically significant inverse correlation with total testosterone level, especially among subjects in the age group of 35-44 years and those greater than 65 years. However, free testosterone level failed to show a significant correlation with any of the obesity indices. No significant difference was noted in the correlation coefficient value among the different age groups. Conclusion: BMI and WC significantly increased in all age groups as total testosterone level decreased. Body fat percent, visceral fat area and subcutaneous fat area showed a significant inverse correlation with total testosterone in the relatively young aged subjects and in the old aged groups.
Keywords: Testosterone, Obesity index, Age
Online ISSN : 2508-7576Print ISSN : 2508-6235
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