Previous studies showed that great difference of inter-arm blood pressure (IABP) was associated with adverse cardiovascular outcomes. However, these studies had measurement bias because blood pressure (BP) was measured sequentially for each arm. Then, the aim of present study, using simultaneous BP measurement, is to investigate the association between ankle brachial index (ABI), brachial ankle pulse wave velocity (baPWV) and IABP difference in patients without cardiovascular disease.