Risk of arrhythmias in 52 755 long-distance cross-country skiers: a cohort study
2013 (English)In: European Heart Journal, ISSN 0195-668X, E-ISSN 1522-9645, Vol. 34, no 47, 3624-3631 p.Article in journal (Refereed) Published
We aimed to investigate the association of number of completed races and finishing time with risk of arrhythmias among participants of Vasaloppet, a 90 km cross-country skiing event.
METHODS AND RESULTS:
All the participants without cardiovascular disease who completed Vasaloppet during 1989-98 were followed through national registries until December 2005. Primary outcome was hospitalization for any arrhythmia and secondary outcomes were atrial fibrillation/flutter (AF), bradyarrhythmias, other supraventricular tachycardias (SVT), and ventricular tachycardia/ventricular fibrillation/cardiac arrest (VT/VF/CA). Among 52 755 participants, 919 experienced arrhythmia during follow-up. Adjusting for age, education, and occupational status, those who completed the highest number of races during the period had higher risk of any arrhythmias [hazard ratio (HR)1.30; 95% CI 1.08-1.58; for ≥5 vs. 1 completed race], AF (HR 1.29; 95% CI 1.04-1.61), and bradyarrhythmias (HR 2.10; 95% CI 1.28-3.47). Those who had the fastest relative finishing time also had higher risk of any arrhythmias (HR 1.30; 95% CI 1.04-1.62; for 100-160% vs. >240% of winning time), AF (1.20; 95% CI 0.93-1.55), and bradyarrhythmias (HR 1.85; 95% CI 0.97-3.54). SVT or VT/VF/CA was not associated with finishing time or number of completed races.
Among male participants of a 90 km cross-country skiing event, a faster finishing time and a high number of completed races were associated with higher risk of arrhythmias. This was mainly driven by a higher incidence of AF and bradyarrhythmias. No association with SVT or VT/VF/CA was found.
Place, publisher, year, edition, pages
2013. Vol. 34, no 47, 3624-3631 p.
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:uu:diva-205089DOI: 10.1093/eurheartj/eht188ISI: 000329134300012PubMedID: 23756332OAI: oai:DiVA.org:uu-205089DiVA: diva2:640538