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Risk of recurrent ischaemic events after myocardial infarction in long-distance ski race participants
Dalarna University, School of Education, Health and Social Studies, Medical Science. Uppsala universitet.ORCID iD: 0000-0002-6933-4637
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2016 (English)In: European Journal of Preventive Cardiology, ISSN 2047-4873, E-ISSN 2047-4881, Vol. 23, no 3, 282-290 p.Article in journal (Refereed) Published
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Abstract [en]

Aims: To study whether a high level of physical activity prior to myocardial infarction (MI) also protects against recurrent MI (re-MI) or death.

Methods and Results: A longitudinal study of a primary cohort consisting of 204,038 skiers with a proved substantially high level of physical activity in the world's largest long-distance ski race, Vasaloppet, and 499,543 non-skiers selected from the Swedish population. Individuals with severe diseases at baseline were excluded. In the nationwide clinical register, Swedeheart, we identified 7092 individuals with a first MI incident between 1989 and 2010. Of these, 1039 (0.5%) were skiers and 6053 (1.2%) were non-skiers. One hundred and sixty-three (15.7%) skiers and 1352 (22.3%) non-skiers suffered a re-MI or died during follow-up (median 4.44 years), corresponding to an incidence rate of 38.9 (95% confidence interval (CI) 33.2-45.4)/1000 person-years and 55.6 (95% CI 52.7-58.7)/1000 person-years, respectively. Severity of MI in both groups was the same. For skiers compared to non-skiers the unadjusted hazard ratio (HR) for re-MI was 0.66 (95% CI 0.52-0.82). For death or re-MI, HR was 0.70 (95% CI 0.59-0.82) with consistent results in subgroups based on race year, age, gender, education level, marital status. After adjustment for also smoking, diabetes, hypertension and cardiovascular medication, HR was 0.80 (95% CI 0.67-0.97).

Conclusions: This large cohort study supports the hypothesis that patients with MI and with prior physical activity and healthy lifestyle, as evidenced by their participation in a long-distance ski race, have a lower risk of subsequent re-MI or death. 

Place, publisher, year, edition, pages
2016. Vol. 23, no 3, 282-290 p.
Keyword [en]
cardiovascular disease, cross-country skiing, epidemiology, lifestyle, physical activity, prevention, public health, Recurrent myocardial infarction, sports medicine, Sweden
National Category
Clinical Medicine
Research subject
Health and Welfare
Identifiers
URN: urn:nbn:se:du-20872DOI: 10.1177/2047487315578664PubMedID: 25827685Scopus ID: 2-s2.0-84954308960OAI: oai:DiVA.org:du-20872DiVA: diva2:898722
Available from: 2016-01-29 Created: 2016-01-29 Last updated: 2016-11-14Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard1
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More styles
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