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| Item Type: | Article |
|---|---|
| Title: | Frequency of exercise-induced ST-T-segment deviations and cardiac arrhythmias in recreational endurance athletes during a marathon race: results of the prospective observational Berlin Beat of Running study |
| Creators Name: | Herm, J., Toepper, A., Wutzler, A., Kunze, C., Kruell, M., Brechtel, L., Lock, J., Fiebach, J.B., Heuschmann, P.U., Haverkamp, W., Endres, M., Jungehulsing, G.J. and Haeusler, K.G. |
| Abstract: | OBJECTIVES: While regular physical exercise has many health benefits, strenuous physical exercise may have a negative impact on cardiac function. The 'Berlin Beat of Running' study focused on feasibility and diagnostic value of continuous ECG monitoring in recreational endurance athletes during a marathon race. We hypothesised that cardiac arrhythmias and especially atrial fibrillation are frequently found in a cohort of recreational endurance athletes. The main secondary hypothesis was that pathological laboratory findings in these athletes are (in part) associated with cardiac arrhythmias. DESIGN: Prospective observational cohort study including healthy volunteers. SETTING AND PARTICIPANTS: One hundred and nine experienced marathon runners wore a portable ECG recorder during a marathon race in Berlin, Germany. Athletes underwent blood tests 2-3 days prior, directly after and 1-2 days after the race. RESULTS: Overall, 108 athletes (median 48 years (IQR 45-53), 24% women) completed the marathon in 249±43 min. Blinded ECG analysis revealed abnormal findings during the marathon in 18 (16.8%) athletes. Ten (9.3%) athletes had at least one episode of non-sustained ventricular tachycardia, one of whom had atrial fibrillation; eight (7.5%) individuals showed transient ST-T-segment deviations. Abnormal ECG findings were associated with advanced age (OR 1.11 per year, 95% CI 1.01 to 1.23), while sex and cardiovascular risk profile had no impact. Directly after the race, high-sensitive troponin T was elevated in 18 (16.7%) athletes and associated with ST-T-segment deviation (OR 9.9, 95% CI 1.9 to 51.5), while age, sex and cardiovascular risk profile had no impact. CONCLUSIONS: ECG monitoring during a marathon is feasible. Abnormal ECG findings were present in every sixth athlete. Exercise-induced transient ST-T-segment deviations were associated with elevated high-sensitive troponin T (hsTnT) values. TRIAL REGISTRATION: ClinicalTrials.gov NCT01428778; Results. |
| Keywords: | Age Factors, Arrhythmias, Cardiac, Athletes, Atrial Fibrillation, Berlin, Cardiovascular Diseases, Electrocardiography, Heart Conduction System, Monitoring, Ambulatory, Odds Ratio, Physical Endurance, Prospective Studies, Recreation, Risk Factors, Running, Troponin T |
| Source: | BMJ Open |
| ISSN: | 2044-6055 |
| Publisher: | BMJ Publishing Group |
| Volume: | 7 |
| Number: | 8 |
| Page Range: | e015798 |
| Date: | 3 August 2017 |
| Official Publication: | https://doi.org/10.1136/bmjopen-2016-015798 |
| PubMed: | View item in PubMed |
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