Hodson B, et al. – The relative contribution of forward (Pf) and backward (Pb) wave pressures to age–related increases in pulse pressure (PPc) (radial applanation tonometry and SphygmoCor software using an assumed triangular wave for wave separation analysis) was evaluated in community participants, not on antihypertensive therapy. It was observed that across the adult lifespan, aortic backward waves contributed to age–related increases in aortic PPc, independent of the impacts of antihypertensive therapy, but at an older age, this influence might be ascribed in–part to the effect of forward on backward wave pressures.