The projected effect of increasing physical activity on reducing the prevalence of common mental disorders among Canadian men and women: A national population-based community study

► Around 1 in 10 Canadians reported a 12-month mental disorder at 2002. ► Almost half of Canadians were physically inactive. ► Approximately 780,000 cases nationally were attributable to physical inactivity. ► A 25% reduction in physical inactivity would result in 389,000 fewer cases. ► Physical activity was more beneficial for men than for women.