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The Dynamics of Cardiovascular Biomarkers in non-Elite Marathon Runners

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The number of recreational/non-elite athletes participating in marathons is increasing, but data regarding impact of endurance exercise on cardiovascular health are conflicting. This study evaluated 79 recreational athletes of the 2016 Barcelona Marathon (72% men; mean age 39 ± 6 years; 71% ≥35 years). Blood samples were collected at baseline (24–48 h before the race), immediately after the race (1–2 h after the race), and 48-h post-race. Amino-terminal pro-B type natriuretic peptide (NT-proBNP, a marker of myocardial strain), ST2 (a marker of extracellular matrix remodeling and fibrosis, inflammation, and myocardial strain), and high-sensitivity troponin T (hs-TnT, a marker of myocyte stress/injury) were assayed. The median (interquartile range, IQR) years of training was 7 (5–11) years and median (IQR) weekly training hours was 6 (5–8) h/week, respectively. The median (IQR) race time (h:min:s) was 3:32:44 (3:18:50–3:51:46). Echocardiographic indices were within normal ranges. Immediately after the race, blood concentration of the three cardiac biomarkers increased significantly, with 1.3-, 1.6-, and 16-fold increases in NT-proBNP, ST2, and hs-TnT, respectively. We found an inverse relationship between weekly training hours and increased ST2 (p = 0.007), and a direct relationship between race time and increased hs-TnT (p < 0.001) and ST2 (p = 0.05). Our findings indicate that preparation for and participation in marathon running may affect multiple pathways affecting the cardiovascular system. More data and long-term follow-up studies in non-elite and elite athletes are needed.

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Correspondence to Antoni Bayes-Genis.

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Conflict of Interest

AB-G, JLJ, and JL have participated in lectures from Roche and Critical Diagnostics. PL has no disclosures. AB-G has received honoraria for lectures from Roche Diagnostics and Critical Diagnostics. AB-G has received grants from Roche Diagnostics.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Associate Editor Craig Stolen oversaw the review of this article

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Roca, E., Nescolarde, L., Lupón, J. et al. The Dynamics of Cardiovascular Biomarkers in non-Elite Marathon Runners. J. of Cardiovasc. Trans. Res. 10, 206–208 (2017).

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