J Korean Soc Study Obes 1998; 7(4): 342-354
Published online December 30, 1998
Copyright © Korean Society for the Study of Obesity.
Hye Soon Park, Sin Ye Lim
Department of family Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
Background: Epidemiologic studies have shown that the distribution of fat rather than obesity itself may be an independent predictor for coronary heart disease and metabolic disorders. Imaging techniques, such as computerized tomography is the optimal method available for accurate evaluation of visceral and subcutaneous fat. The purpose of this study is to investigate visceral fat accumulation assessed by CT scan according to sex & age, and in relation to cardiovascular risk factors among Korean obese men & women.
Methods: Two hundreds eighty-eight obese subjects(60 men and 228 women) were included for this study. Subjects were selected among the patients who visited into 'Clinic for Obesity' in AMC for weight control. Single CT scan was used to quantify fat deposit in visceral and subcutaneous area at the level of L4-L5 in obese patients older than 15 years. We analyzed visceral fat accumulation according sex & age, and in relation to cardiovascular risk factors among participants.
Results: 1) Visceral fat accumulation was more prominent in men than women at same age, and visceral fat and VSR increased according to age in both sex despite of same degree of BMI. 2) The independent predictors for visceral fat accumulation were age, sex, WHR, and waist circumference. 3) In men and women, visceral fat and VSR were more associated with cardiovascular risk factors rather than total abdominal or subcutaneous fat after adjustment for age, especially visceral fat itself had more significant correlation with cardiovascular risk factors in men and women.
Conclusion: The obese men had more prominent visceral fat accumulation than women with comparable age and body mass index. Visceral fat increased according to age in both sex, and visceral fat itself seemed to play a critical role in the associated with cardiovascular risk factors rather than VSR, total abdominal, or subcutaneous fat. It is necessary to assess and manage for visceral fat and cardiovascular risk factors especially in men or aged persons with obesity.
Keywords: Visceral fat, Cardiovascular risk factors, Obesity