CRP and myocardial infarction: Our findings indicate that a single CR exercise/training session at the beginning of the CR training cycle caused an increase of salivary antioxidant potential assessed by the DPPH test and a decline of the level of oxidative stress in saliva as measured by MDA; however, no change in salivary inflammation evaluated by the CRP concentration (with a tendency to decrease) was revealed among post-myocardial infarction/CR patients.