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Figure 2 Evolution of the plasma venous concentrations of natriuretic peptides at rest, maximal exercise, and 20-min recovery, as well as the exercise increase and post-exercise decrease in natriuretic peptide concentration, for patients stratified according to the presence (black bars) or absence (white bars) of either beta-blocker treatment (upper half; n = 55/n = 49) or a significant left ventricular scarred area on thallium-201 single-photon emission computed tomography (lower half; n = 47/n = 57). The hatched portion of each bar represents the part related to the atrial natriuretic peptide concentration and the open portion of each bar represents the brain natriuretic peptide. *p < 0.05.