J Korean Soc Study Obes 2004; 13(3): 204-210
Published online March 1, 2004
Copyright © Korean Society for the Study of Obesity.
Keun-Hee Ahn1,Mi-Ja Yim2,Hye-Jin Lee,Kwon-Beom Kim,Kyung-A Han,Kyung-Wan Min
Diabetes Center Eulji General Hospital1, College of Human Movement & Performance Ewha Womans University2, Department of Internal Medicine Eulji Medical College
Background: The purpose of this study was to provide the basal data that can be referred at the time of an exercise prescription for the patients, by comparing the difference in an exercise ability according to the obesity degree of type 2DM patients.
Methods: Four hundreds and seventy-two Korean type 2 diabetic patients (males: 230, female: 242) were enrolled and they were divided into two groups, non-obese group (N:258) and obese group (N:214) on the basis of BMI. We examined these groups for N exercise test (GXT). We yielded METs at anaerobic threshold, HRmax% and HRR% so that we compared if there is itemized divergence according to obesity degree.
Results: There were no difference in sex, age, and DM duration between two groups. It was shown that BMI in case of non-obese group was 22.53+1.69 and that in case of obese group 27.77+2.21 kg/m2. There were no significant difference in FBS, PP2, HbA1c and fasting insulin between two groups. Non-obese group in type 2 DM patients had significantly higher exercise experience and METs at anaerobic threshold and max those obese group. Non-obese group in type 2 DM patients had significantly lower total cholesterol and triglyceride those obese group. %HRmax and %HRR were not significantly differed from both groups. However, %HRR was lower compared with ADA and JMA guidelines.
Conclusion: Our results indicates that obese/non obese in Korean type 2 diabetic patients has reduced exercise capacity. This showed no difference in exercise intensity between two groups, however, Both groups had low value in %HRR if compared with the standards for exercise prescription of American Diabetes Association (ADA). In case of exercise prescription depended on ADA standards, the exercise degree of 32%HRR of or 66∼68%HRmax is appropriate for the patients regardless of obese degree.
Keywords: Obesity, %HRmax, %HRR, Anaerobic Threshold