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  "path": "/news/2026-06-marathon-heart-soaring-alarms.html",
  "publishedAt": "2026-06-09T18:30:01.000Z",
  "site": "https://medicalxpress.com",
  "textContent": "Changes to the heart linked to marathon running vary by age, sex and training level, finds a synthesis of the available data, published in BMJ Open Sport & Exercise Medicine. But it is not clear whether these changes represent normal physiological responses to endurance exercise or long-term maladaptations, the findings indicate.",
  "title": "A marathon can send heart warning signals soaring, but what those alarms really mean is far from settled"
}