Abstract P141: Daily Sedentary Time and Risk of Cardiovascular Disease: The National FINRISK 2002 Study
Background: Sedentariness is a recently recognised risk factor of cardiovascular disease (CVD). Previous research has concentrated on television viewing, while daily overall sitting time and its association to CVD has not been studied in detail. The aim was to study the association of overall sitting time with a risk of incident CVD.
Methods: Participants (n=4601) from the National FINRISK 2002 Health Study, a representative population-based study, were followed for fatal and non-fatal CVD. At baseline, participants underwent a health examination, gave a venous blood sample, and filled in questionnaires, including questions on overall daily sitting time. The risk of incident CVD was analysed using Cox regression analysis where sitting time was dichotomized into 10 hour per day. Participants who were free of CVD at baseline were included in the study.
Results: During the mean 8.8 years follow-up, 188 incident CVD cases occurred. Daily overall sedentary time was not independently associated with incident CVD when adjusted for age, gender, education, employment status, smoking status, occupational and leisure time physical activity, body mass index, hypertension or anti-hypertensive medication use, and dyslipidemia or cholesterol lowering medication use. In the joint analyses on employment status and sitting, risk of CVD was highest in the group of not being employed and high amount of sitting (Hazard ratio 2.71, 95% confidence interval 1.35-5.46), as compared to a comparison group of being employed and low amount of sitting.
Conclusions: In conclusion, this study implies that employment status modifies the association between overall sitting time and CVD. Further research should focus on the pathway from sedentarism to CVD. For heart health, a location where people sit, i.e. at work or at home, may be more important than an absolute amount of sitting.
- © 2013 by American Heart Association, Inc.