Intolerance to initial orthostasis relates to systolic BP changes in elders

Abstract
To explore the association of early symptoms of orthostatic intolerance (OI) with systolic (SBP), diastolic (DBP) and mean arterial (MAP) blood pressure changes in a sample of community-dwelling older people undergoing an active stand test; and to establish whether SBP and DBP changes have different symptomatic correlates during early orthostasis.