Physical activity and ischemic stroke risk: The atherosclerosis risk in communities study

Kelly R. Evenson, Wayne D. Rosamond, Jianwen Cai, James F. Toole, Richard G. Hutchinson, Eyal Shahar, Aaron R. Folsom

Research output: Contribution to journalArticle

109 Citations (Scopus)

Abstract

Background and Purpose - The relationship between physical activity and stroke is inconclusive according to the 1996 US Surgeon General's Report on Physical Activity and Health. Therefore, this study examined the relationship between physical activity and ischemic stroke risk among 14 575 Atherosclerosis Risk in Communities Study participants aged 45 to 64 years free of self-reported stroke and coronary heart disease at baseline. Methods - Eligible potential stroke hospitalizations were identified from ongoing hospital surveillance and from hospitalizations reported by the cohort study participants. All strokes were validated by hospitalization records. Physical activity was measured as sport, leisure (nonsport), and work with the use of the Baecke questionnaire. Multivariable Poisson and Cox proportional hazards models were used to determine the association of differing levels of physical activity with ischemic stroke incidence. Results - During an average of 7.2 years of follow-up, 189 incident ischemic strokes occurred. Ischemic stroke incidence rates were highest in the lowest quartile of sport, leisure, and work scores. The hazard rate ratios with 95% CIs for ischemic stroke for the highest quartile compared with the lowest quartile of activity adjusted for age, sex, race-center, education, and smoking, were sport 0.83 (0.52, 1.32), leisure 0.89 (0.57, 1.37), and work 0.69 (0.47, 1.00). Further adjustment for factors that likely were intermediate variables (hypertension, diabetes, fibrinogen, and body mass index) between physical activity and stroke attenuated the associations. Conclusions - Our findings suggest that physical activity was weakly associated with a reduced risk of ischemic stroke among middle-aged adults. The association may be due to links between physical activity and other risk factors or due to chance.

Original languageEnglish (US)
Pages (from-to)1333-1339
Number of pages7
JournalStroke
Volume30
Issue number7
StatePublished - Jul 1999
Externally publishedYes

Fingerprint

Atherosclerosis
Stroke
Exercise
Leisure Activities
Sports
Hospitalization
Incidence
Proportional Hazards Models
Fibrinogen
Coronary Disease
Body Mass Index
Cohort Studies
Smoking
Hypertension
Education
Health

Keywords

  • Epidemiology
  • Leisure activities
  • Stroke prevention
  • Stroke, ischemic

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Neuroscience(all)

Cite this

Evenson, K. R., Rosamond, W. D., Cai, J., Toole, J. F., Hutchinson, R. G., Shahar, E., & Folsom, A. R. (1999). Physical activity and ischemic stroke risk: The atherosclerosis risk in communities study. Stroke, 30(7), 1333-1339.

Physical activity and ischemic stroke risk : The atherosclerosis risk in communities study. / Evenson, Kelly R.; Rosamond, Wayne D.; Cai, Jianwen; Toole, James F.; Hutchinson, Richard G.; Shahar, Eyal; Folsom, Aaron R.

In: Stroke, Vol. 30, No. 7, 07.1999, p. 1333-1339.

Research output: Contribution to journalArticle

Evenson, KR, Rosamond, WD, Cai, J, Toole, JF, Hutchinson, RG, Shahar, E & Folsom, AR 1999, 'Physical activity and ischemic stroke risk: The atherosclerosis risk in communities study', Stroke, vol. 30, no. 7, pp. 1333-1339.
Evenson KR, Rosamond WD, Cai J, Toole JF, Hutchinson RG, Shahar E et al. Physical activity and ischemic stroke risk: The atherosclerosis risk in communities study. Stroke. 1999 Jul;30(7):1333-1339.
Evenson, Kelly R. ; Rosamond, Wayne D. ; Cai, Jianwen ; Toole, James F. ; Hutchinson, Richard G. ; Shahar, Eyal ; Folsom, Aaron R. / Physical activity and ischemic stroke risk : The atherosclerosis risk in communities study. In: Stroke. 1999 ; Vol. 30, No. 7. pp. 1333-1339.
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