Running and the Heart 2
Figure 2. The inside of the heart. Alterations in the anatomy of the heart can interfere with the heart’s ability to beat regularly. When the heart beats irregularly, that is called an arrhythmia. Certain types of arrhythmias can cause sudden cardiac death. Image by The Society of Thoracic Surgeons.
Bryon Powell is the Founding Editor of iRunFar. He’s been writing about trail running, ultrarunning, and running gear for more than 15 years. Aside from iRunFar, he’s authored the books Relentless Forward Progress: A Guide to Running Ultramarathons and Where the Road Ends: A Guide to Trail Running, been a contributing editor at Trail Runner magazine, written for publications including Outside, Sierra, and Running Times, and coached ultrarunners of all abilities. Based in Silverton, Colorado, Bryon is an avid trail runner and ultrarunner who competes in events from the Hardrock 100 Mile just out his front door to races long and short around the world, that is, when he’s not fly fishing or tending to his garden.
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