Adverse CV events associated with excessive exercise

A review concludes chronic training and competing in extreme endurance events such as marathons, triathlons and very long distance cycling may be too much of a good thing.

“Long-term excessive endurance training may cause adverse structural and electrical cardiac remodelling, including fibrosis and stiffening of the atria, right ventricle, and large arteries. This theoretically might provide a substrate for atrial and ventricular arrhythmias and increase cardiovascular risk,” the authors said.

Associate Professor David Prior, a specialist in sports cardiology at St Vincent’s Hospital, whose work on