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Abstract
Objectives: The purpose of the present study was to investigate the relationships between blood pressure (BP), insulin resistance as determined by a homeostasis model (HOMA‐IR), and body fat distribution. Methods: Anthropometric indices of adiposity, metabolic variables (fasting serum insulin and a homeostasis model assessment [HOMA] index of insulin sensitivity), BP and several cardiovascular risk factors were measured during a cross sectional survey of 53477 apparently healthy Korean subjects who requested a health status check. Hypertension was defined as a systolic BP ≥ 140 mmHg or a diastolic BP ≥ 90 mmHg and we excluded the subjects taking BP‐lowering medication. Results: Systolic and diastolic blood pressure (SBP, DBP) were positively and significantly associated with age, body mass index, waist circumference, and waist/hip ratio. In addition, SBP and DBP were positively associated with fasting serum insulin levels and the HOMA index. By multiple regression analysis age, waist circumference, body mass index, HOMA index and female sex were independently associated with either increased SBP or DBP. When the population is divided into quintiles according to insulin resistance (measured by HOMA analysis) prevalence of hypertension in the second, third, fourth and fifth quintiles compared to subjects in the first quintile are 1.004(95% CI 0.875–1.152, p=0.957), 1.200(95% CI 1.052–1.369, p=0.007), 1.312(95% CI 1.151–1.494 p < 0.001), and 1.603(95% CI 1.408–1.825 p < 0.001). In addition age, sex, body mass index and waist circumference were found to be significantly associated with hypertension. Conclusion: Our results showed that insulin resistance, body mass index and waist circumference are independent risk factors of a high BP in Koreans.