Background: A paradoxical profile of greater elevated sympathetic vasoconstriction (increased total peripheral resistance. TPR) and increased vagally-mediated heart rate variability (HRV) -the so-called Cardiovascular Conundrum- has been reported in African Americans (AAs) both at rest and in response to orthostasis. Whereas some authors have attributed this pattern to genetic factors... https://steedaes.shop/product-category/radiator-brackets/