10-year running study reveals heart changes in male marathoners

NCT ID NCT04166903

First seen Jun 26, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This study followed 277 male runners who took part in a 2009 study to see how years of ultra-endurance running affect the heart and body. Researchers measured heart function and blood markers over a decade. The goal is to learn about the long-term effects of extreme exercise on health.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to

If successful, this could help understand the long-term heart effects of extreme endurance running in men.

What could go wrong

This is an observational study, not a treatment trial. It cannot prove cause and effect, and results may not apply to women or casual runners.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

cardiovascular disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Department of Prevention, Rehabilitation and Sports Medicine, Munich, Germany

    Munich, Bavaria, 80992, Germany