{
  "abstract": "Background Middle-aged men seem to be particularly susceptible to adverse cardiovascular effects of endurance exercise. The acute impact of training, marathon finishing and recovery on the heart has not been extensively investigated in such at-risk novice marathon runners.Methods We prospectively quantified cardiac changes in middle-aged men (41.2±4.5 years; n=17) who participated in their first marathon run at four time points: at baseline, after 16 weeks of training, within 10 hours after completing the 2021 Amsterdam Marathon run and after 4 weeks of recovery. Measurements included comprehensive 3-Tesla MRI examination, echocardiography, ECG and blood sample assays of high-sensitivity troponin-T (hs-TnT) and N-terminal pro-B-type natriuretic peptide (NT-proBNP).Results Acute effects associated with finishing the marathon run were a <10% reduction in left ventricular end-diastolic volume in absence of other morphological changes, and only minor changes in systolic contractile mechanics and diastolic filling patterns. Neither quantitative myocardial mapping with MRI nor late gadolinium enhancement revealed any signs of post-marathon myocardial injury. ECGs did not reveal any abnormalities. Circulating levels of hs-TnT and NT-proBNP had increased markedly after the marathon, with hs-TnT exceeding the clinical upper reference limit for all participants. All observed marathon running-induced effects were transient.Conclusions Extensive phenotyping using state-of-the-art quantitative imaging modalities paired with physical assessments and blood assays in this selected cohort offers no evidence to support the notion that first-time marathon running in healthy middle-aged men has a detrimental impact on the heart.",
  "authors": [
    {
      "affiliations": [
        "Department of Cardiology, Amsterdam University Medical Center, Amsterdam Movement Sciences, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands",
        "Center for Sport and Exercise Studies, Center for Sport and Exercise Studies, Indonesian Medical Education and Research Institute, Faculty of Medicine, University of Indonesia, Jakarta, Indonesia"
      ],
      "name": "Inarota Laily"
    },
    {
      "affiliations": [
        "Department of Cardiology, Amsterdam University Medical Center, Amsterdam Movement Sciences, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands"
      ],
      "name": "Niels van Steijn"
    },
    {
      "affiliations": [
        "Department of Cardiology, Amsterdam University Medical Center, Amsterdam Movement Sciences, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands",
        "Department of Sports Medicine, Anna Hospital, Geldrop, The Netherlands"
      ],
      "name": "Tom G H Wiggers"
    },
    {
      "affiliations": [
        "Department of Radiology, University Medical Center Utrecht, Utrecht, The Netherlands"
      ],
      "name": "Martijn Froeling"
    },
    {
      "affiliations": [
        "Department of Radiology and Nuclear Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands"
      ],
      "name": "R Nils Planken"
    },
    {
      "affiliations": [
        "Department of Cardiology, Amsterdam University Medical Center, Amsterdam Movement Sciences, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands"
      ],
      "name": "Sjoerd M Verwijs"
    },
    {
      "affiliations": [
        "School of Physiotherapy, Faculty of Health, Sport, and Physical Activity, Amsterdam University of Applied Sciences, Amsterdam, The Netherlands"
      ],
      "name": "Ferdinand H de Haan"
    },
    {
      "affiliations": [
        "Department of Public and Occupational Health, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands"
      ],
      "name": "Ehsan Motazedi"
    },
    {
      "affiliations": [
        "Amsterdam Collaboration on Health & Safety in Sports, Department of Public and Occupational Health, Amsterdam Movement Sciences, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands"
      ],
      "name": "Evert A L M Verhagen"
    },
    {
      "affiliations": [
        "Department of Cardiology, Amsterdam University Medical Center, Amsterdam Movement Sciences, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands"
      ],
      "name": "Harald T Jørstad"
    },
    {
      "affiliations": [
        "Department of Radiology and Nuclear Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands"
      ],
      "name": "Adrianus J Bakermans"
    }
  ],
  "title": "Acute impact of first-time marathon running on the heart in middle-aged men",
  "uid": "ae4c5c1f-163a-5cbf-b847-72f61c8b2ecf"
}