Is Ultra Running Bad for the Heart?

We’re pleased to share that Dr Dan Augustine recently contributed his expertise to a Runner’s World article exploring an important question for endurance athletes: is ultra running harmful to your heart?

A new study published in the Journal of Applied Physiology suggests that ultramarathon running doesn’t cause short-term heart damage. Researchers examined 41 runners after completing the 2023 Western States 100-mile race and found no increase in arterial stiffness and a drop in blood pressure - both encouraging signs.

While these findings are reassuring, Dr Augustine, a consultant sports cardiologist, advises a balanced perspective. ‘Aerobic exercise is undoubtedly good for your heart,’ he explains. ‘But we still don’t know enough about the long-term effects of repeated endurance events on the heart.’ He highlights that intense endurance exercise may lead to changes in heart structure over time and an increased risk of rhythm issues like atrial fibrillation.

The message? Keep enjoying your running, but be mindful of how your heart responds, especially if you’re building up to long-distance events. Regular check-ups and well-planned training can help you stay healthy while achieving your endurance goals.

Want to read the full story and learn more about the research? You can find the complete article in Runner’s World here: Is ultra running bad for the heart? - Runner's World

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