Brachial-Ankle Pulse Wave Velocity and Metabolic Syndrome in a Japanese Population: The Minoh Study

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Abstract
To investigate the association between brachial-ankle pulse wave velocity (baPWV) and metabolic syndrome (MS), we examined 374 men and 622 women aged 40 to 69 years who did not have a past history of either coronary heart disease or stroke. We used a modified National Cholesterol Education Program definition of MS that utilizes body mass index instead of waist circumference. Age-adjusted mean values of baPWV were greater when obesity, high systolic and diastolic blood pressures, high triglyceride level, low high-density lipoprotein cholesterol, high fasting glucose level or MS itself were present. baPWV was also associated with fasting insulin levels and homeostasis model assessment of insulin resistance (HOMA-IR) values. Mean values of baPWV (adjusted for age, smoking status, and drinking status) in men with 0, 1, 2, and > or =3 features of MS were 1,409, 1,517, 1,640, and 1,665 cm/s, respectively (p for trend <0.001). The respective adjusted mean baPWV values for women were 1,368, 1,531, 1,547, and 1,661 cm/s (p for trend <0.001). As for insulin resistance, the adjusted mean baPWV values across quartiles of HOMA-IR (lowest to highest) were 1,488, 1,514, 1,566, and 1,624 cm/s (p for trend <0.001) for men. The respective adjusted mean baPWV values for women were 1,395, 1,441, 1,464, and 1,539 cm/s (p for trend <0.001). Our findings indicate that clustered features of MS and insulin resistance are strongly associated with the risk for increased baPWV in Japanese men and women.