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T, sex hormone-binding globulin (SHBG), and dehydroepiandrosterone sulfate (DHEAS) were measured longitudinally over 33 yr (follow-up 11.8 \u00b1 8.3 yr) in 901 men from the Baltimore Longitudinal Study of Aging, of whom 206 (68.1 \u00b1 13.7 yr) underwent carotid duplex ultrasonography. The 901 men were used to characterize age-associated hormone levels by means of mixed-effects models. Hormone values were estimated for the 206 men at the time of ultrasonography. Free T index (FTI) was calculated by dividing T by SHBG. The arterial stiffness index was calculated from peak systolic and end diastolic diameters of the common carotid artery and simultaneous brachial artery blood pressure. T, FTI, and DHEAS were correlated negatively with age, pulse pressure (PP), and stiffness index (each P &lt; 0.01), whereas SHBG was correlated positively with age and stiffness index ( P &lt; 0.01). However, T was the only hormone that predicted the stiffness index after adjustment for age, PP, fasting plasma glucose, body mass index, and total cholesterol. T values 5\u201310 yr before the carotid study also predicted the stiffness index ( P &lt; 0.05). Thus the adverse influence of low T on the cardiovascular system in men may be mediated in part via the effects of T on vascular structure and function.<\/jats:p>","DOI":"10.1152\/ajpendo.00059.2005","type":"journal-article","created":{"date-parts":[[2005,9,14]],"date-time":"2005-09-14T03:03:11Z","timestamp":1126666991000},"page":"E234-E242","source":"Crossref","is-referenced-by-count":99,"title":["Relationship between androgenic hormones and arterial stiffness, based on longitudinal hormone measurements"],"prefix":"10.1152","volume":"290","author":[{"given":"Hidetaka","family":"Hougaku","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jerome L.","family":"Fleg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samer S.","family":"Najjar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edward G.","family":"Lakatta","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S. 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