The greater metabolic cost associated with concentric muscle contractions, compared to eccentric muscle contractions, is well known. However, the influence this metabolic cost difference has on post exercise hypotension and arterial stiffness is unknown. Thus the purpose of this investigation was to determine changes in blood pressure and arterial stiffness following a session of concentric only and eccentric only resistance exercise. Twelve subjects performed 2 exercise training sessions that consisted of 6 separate lower and upper body resistance exercises that were comprised of either eccentric only or concentric only muscle contractions. Mean arterial pressure, pulse wave velocity, heart rate and blood lactate were assessed at baseline as well as immediately, 30 and 90 minutes post. The VO2 requirement across the whole concentric exercise session was 50.0% greater than eccentric exercise. MAP following the bout of eccentric exercise was elevated by 5% (p