Research published in the American Heart Association’s journal Circulation has raised the issue of heart problems in marathon runners. Photo: Alamy

Marathon running puts heart under strain, say researchers, who urge sufficient training

  • Strain imposed by running 42km race is much greater than when running shorter distances, Spanish study shows
  • Researchers find no evidence of increased risk of heart attack or heart disease, but say runners should make sure they train enough for the longer distance
Topic |   Health and wellness

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Research published in the American Heart Association’s journal Circulation has raised the issue of heart problems in marathon runners. Photo: Alamy
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