Estimating the current and future cancer burden attributable to inadequate leisure-time physical activity among adults in Canada
ISPAH ePoster Library. Friedenreich C. Oct 15, 2018; 225123
Dr. Christine Friedenreich
Dr. Christine Friedenreich
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Abstract Background:<\b>
Despite established associations between inadequate physical activity and cancer risk, levels of physical inactivity in Canada remain high. In the Canadian Population Attributable Risk of Cancer (ComPARe) study, we estimated the current and future proportion of cancer incidence attributable to inactivity in Canada. Methods:<\b>
We identified 15 cancer sites associated with inadequate physical activity. Age-sex-specific incidence data were combined with self-reported leisure-time physical activity prevalence data. We estimated the cancer burden attributable to moderate inactivity (energy expenditure between 1.5-3.0 kcal/kg per day) and inactivity (< 1.5 kcal/kg per day) and forecast the number of cases that could be avoided between 2012-2042 if the prevalence of physical inactivity was reduced. Results:<\b>
Approximately 79% of women and 69% of men in Canada were characterized as moderately inactive or inactive in 2000. Overall, 10.4% (10% for men and 11% for women) of incident cancers in 2012 were attributable to inadequate physical activity (11,048 cases). Encouraging projections demonstrated that if the prevalence of physical inactivity continues on the current trend, the proportion of attributable cases will decrease to 8.6% by 2042. However, if the prevalence of inactivity was reduced by 50%, a cumulative 39,701 cases of cancer could be prevented by 2042. Conclusion:<\b>
In Canada in 2012, 10.4% of incident cancers were attributable to inadequate physical activity. These results will help inform and prioritize strategies to increase physical activity, which could reduce future cancer burden in Canada. External funding details This research is supported by a Canadian Cancer Society Research Institute Partner Prevention Research Grant (#703106).
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