Fig. 1

Primary outcome parameter VO₂ peak and other parameters from cardiopulmonary exercise testing at baseline (T0), end of CR (T1) and 1-year follow-up (T2) in patients with and without DM. Shown are medians and interquartile ranges. Black lines indicate significant differences in the adjusted mixed models with asterisk indicating p ≤ 0.01 for main group or time effects and x for p ≤ 0.01 for group x time interaction effect