During systole, some kinetic energy is stored as potential energy in elastic conduit arteries. This stored energy permits smooth distal tissue perfusion during diastole (blue tracing). With arteriosclerotic stiffening (red tracing), less potential energy is stored during systole, giving rise to more erratic and pulsatile flow during diastole. Diabetes and aging significantly increase arteriosclerotic conduit vessel stiffening192. Reproduced from reference1 with permission. See also references193, 194,158, 195 for detailed discussion.