ArticleArquivos brasileiros de cardiologia2025
Record-Breaking Endurance of 366 Marathons in 366 Days: A Case Study.
Article in Arquivos brasileiros de cardiologia, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Beyond Limits: What 366 Consecutive Marathons Reveal about the Human Heart.Arquivos brasileiros de cardiologia · 2025Article
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8 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundA Brazilian athlete has proposed setting a new world record for consecutive marathons by running 366 marathons in 366 consecutive days. The impact of such a feat on the cardiovascular system is unknown.
objectiveTo monitor the cardiovascular system to assess the athlete's cardiovascular adaptations or maladaptations over the period.
methodsDuring the pre-study evaluation, we conducted the pre-participation clinical evaluation (PPE) composed of anamnesis, electrocardiogram, blood test, and functional capacity by maximum cardiopulmonary exercise test (CPET). At follow-up, serial CPET, body composition assessment, blood sample, and echocardiogram were periodically performed for 12 months.
resultsAt PPE, male, 43-year-old, height: 1.83 m, weight: 76.9 kg, maximum oxygen consumption (VO2max): 52 ml/kg/min, body fat: 12.6%, systolic and diastolic blood pressure: 120/80 mmHg, blood glucose: 92 mg/dL, total cholesterol (TC): 185 mg/dL, high-sensitivity C-reactive protein (hs-CRP): 0.08 mg/dL, creatine phosphokinase (CPK): 183 U/L, and high-sensitivity troponin T (hs-TnT): 7.1 ng/L. At follow-up, the average of VO2max remained at 48.7 ± 1.2 ml/kg/min, left ventricular ejection fraction (LVEF) at 62 ± 2%, LV strain global longitudinal at 19 ± 1%, LV mass index at 83 ± 7 g/m2, hs-CRP at 0.07 ± 0.01 mg/L, CPK at 169 ± 36 U/L, hs-TnT at 8.2 ± 1.4 ng/L, and no malignant arrhythmias were observed.
conclusionThe athlete's cardiovascular system had adapted to an extremely high volume of consecutive marathons at moderate intensity for one year and remained functioning at normal range. In addition, the athlete set a new world record for most consecutive days to run a marathon, recognized by Guinness World Records.
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