Overall , the current literature supports clearly the dose-response relationship between physical activity and the seven chronic conditions identified .
Moreover , higher levels of physical activity reduce the risk for premature all-cause mortality .
The current Canadian guidelines appear to be appropriate to reduce the risk for the seven chronic conditions identified above and all-cause mortality
This systematic review examines critically the scientific basis for Canada 's Physical Activity Guide for Healthy Active Living for adults .
Particular reference is given to the dose-response relationship between physical activity and premature all-cause mortality and seven chronic diseases ( cardiovascular disease , stroke , hypertension , colon cancer , breast cancer , type 2 diabetes ( diabetes mellitus ) and osteoporosis ) .
The strength of the relationship between physical activity and specific health outcomes is evaluated critically .
The long-term effect of physical activity on incidence of coronary heart disease: a 12-year follow-up study.
BACKGROUND This study analyzed the long-term effect of leisure-time physical activity on incident cases of coronary heart disease ( CHD ) among women and men . METHODS A national , r and om sample of 2,551 women and 2,645 men , aged 35 - 74 , was interviewed in 1988 and 1989 and followed until December 31 , 2000 , with respect to CHD incident cases . Women and men hospitalized for CHD 2 years before the start of the study and those who rated their general health as poor were not included in the sample .  Leisure-time physical activity  was divided into four levels according to the frequency of physical activity . The relationship between leisure-time physical activity  and CHD was studied in a Cox regression model , adjusted for sex , age , income , smoking , and BMI . RESULTS When leisure-time physical activity increased , the risk of CHD decreased . Women and men who were physically active at least twice a week had a 41 % lower risk of developing CHD than those who performed no physical activity ( hazard ratio = 0.59 , CI = 0.37 - 0.95 ) , after adjustment for all the explanatory variables . CONCLUSIONS The positive long-term effect of  leisure-time physical activity  on  CHD risk among women and men remains even after accounting for income and other important CHD risk factors
Overall , the current literature supports clearly the dose-response relationship between physical activity and the seven chronic conditions identified .
Moreover , higher levels of physical activity reduce the risk for premature all-cause mortality .
The current Canadian guidelines appear to be appropriate to reduce the risk for the seven chronic conditions identified above and all-cause mortality
This systematic review examines critically the scientific basis for Canada 's Physical Activity Guide for Healthy Active Living for adults .
Particular reference is given to the dose-response relationship between physical activity and premature all-cause mortality and seven chronic diseases ( cardiovascular disease , stroke , hypertension , colon cancer , breast cancer , type 2 diabetes ( diabetes mellitus ) and osteoporosis ) .
The strength of the relationship between physical activity and specific health outcomes is evaluated critically .