HR and BP are not really associated with each other. HR measures the amount of times a heart cycles through sytole and diastole which has very little effect on BP itself unless being put under a lot of undo stress (high intensity work outs). BP is more or less dependent on age, gender, weight (obesity), the ability of the blood vessels to constrict and contract, the amount of fat/constriction variables on the arterial walls, viscosity of the blood itself, and obviously stress. HR is just the cycle of how many times a heart beats BP is the measure of how high the pressure from the ejected blood is forced against arterial walls.