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Pathophysiology of Coronary Heart Disease and Biological Mechanisms for the Cardioprotective Effects of Regular Aerobic Exercise
American Journal of Lifestyle Medicine, 09/18/09

Leon AS et al. – Epidemiology studies over the past 50 years have consistently observed an inverse association between CHD and regular physical activity and/or cardiorespiratory fitness. Supporting evidence of causative relationships has been provided by exercise training studies demonstrating multiple, plausible, cardioprotective, biological mechanisms. These pleotropic effects may be classified as (1) direct antiatherosclerotic effects and indirect effects via reduction of other risk factors, (2) anti–ischemic effects by decreasing myocardial oxygen demands and increasing its vascular supply and by decreasing the severity of ischemic injuries by direct conditioning effects on cardiomyocytes, (3) antiarrhythmic effects by improving electrical stability of the heart, and (4) antithrombotic (and prothrombolytic) effects, reducing risk of a coronary thrombotic occlusion. It is concluded based on an impressive body of evidence that regular aerobic exercise attenuates the risk of CHD at all stages of the atherothrombotic process.

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