Fig. 5From: The Contribution of Individual Exercise Training Components to Clinical Outcomes in Randomised Controlled Trials of Cardiac Rehabilitation: A Systematic Review and Meta-regressionRelationship between the prescribed time for exercise training each session and the relative risk of myocardial infarction compared to usual care (p = 0.011). Each intervention is represented by a circle; the size of the circle is proportional to the number of participants undertaking that intervention. A log RR of >0 represents an increase in risk and <0 a decreaseBack to article page