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Cardiopulmonary Fitness Is Independently Associated with Insulin Resistance in Non- Diabetes Mellitus Patients of a University Hospital in Korea

 Eun-Hye Jun  ;  Bo-Yoon Choi  ;  Duk-Chul Lee  ;  Ji-Won Lee  ;  Jee-Yon Lee 
 Korean Journal of Family Medicine, Vol.34(2) : 139-144, 2013 
Journal Title
 Korean Journal of Family Medicine (가정의학회지) 
Issue Date
Exercise Test ; Insulin Resistance ; Physical Fitness
BACKGROUND: Insulin resistance, decreased response of peripheral tissue to normal insulin levels, is known to be related to cardiometabolic diseases. Cardiopulmonary fitness is also considered to be related to these comorbidities. Therefore, we investigated the relationship between insulin resistance and cardiopulmonary fitness by performing a 3-minute step test in a Korean non-diabetes mellitus (DM) population. METHODS: A total of 118 non-DM subjects were enrolled during their routine health check-up. Insulin resistance was measured by calculating homeostatic model assessment-insulin resistance (HOMA-IR), and a 3-minute step test was performed to measure cardiopulmonary fitness. RESULTS: Post-60 seconds exercise heart rate after 3-minute test (R60 heart rate) was correlated with age (r = -0.21, P = 0.02), education (r = 0.17, P = 0.04), body mass index (r = 0.23, P = 0.01), waist circumference (r = 0.28, P < 0.01), fasting insulin (r = 0.28, P < 0.01), HOMA-IR (r = 0.25, P < 0.01), low density lipoprotein-cholesterol (r = 0.28, P < 0.01), high sensitivity C-reactive protein levels (r = 0.22, P = 0.02), and baseline heart rate (r = 0.56, P < 0.01). In a step-wise multiple regression analysis, baseline heart rate (β = 0.79, P < 0.001), HOMA-IR (β = 0.65, P = 0.02), and systolic blood pressure (β = 0.15, P = 0.03) were identified as explanatory variables for R60 heart rates. CONCLUSION: Our results suggested that cardiopulmonary fitness was associated with insulin resistance in non-DM patients of a university hospital in Korea. Further studies are needed to elucidate the underlying mechanisms.
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1. College of Medicine (의과대학) > Dept. of Family Medicine (가정의학교실) > 1. Journal Papers
Yonsei Authors
Lee, Duk Chul(이덕철) ORCID logo https://orcid.org/0000-0001-9166-1813
Lee, Ji Won(이지원) ORCID logo https://orcid.org/0000-0002-2666-4249
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