Figure 1

The course of the plasma levels of the N-terminal prohormones of the A-and B-type natriuretic peptides (NTproANP, NTproBNP) and relaxin (RLX) in patients with ischemic heart disease undergoing physical exercise testing. Baseline: after 30 min supine rest; max. charge: during peak exercise; recovery: 10 min after peak exercise. Data are given as box blots. P-values denote a significant difference versus baseline (Friedman's test followed by Wilcoxon's matched pairs test).