Dibben GO, et al. - Researchers analyzed data from randomized controlled trials (RCTs) comparing the impact of cardiac rehabilitation (CR) vs usual care control on subjectively or objectively measured physical activity (PA) levels of patients with heart disease including adults with heart failure (HF) or coronary heart disease (CHD). They also assessed the methodological quality of these studies searched from databases (MEDLINE, EMBASE, CENTRAL, CINAHL, PsychINFO and SportDiscus). A high risk of bias and relatively poor quality of the PA assessment and reporting was seen for the included trials. Analysis of 40 RCTs, (6,480 patients: 5,825 CHD, 655 HF) produced moderate evidence of an increase in PA with CR participation relative to controls. PA increases in the metrics of steps/day and proportion of patients categorized as physically active were seen in the meta-analysis.