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 Risk of Acute Myocardial Infarction: Interactions of Types of Physical Activity
Background : Leisure time physical activity has previously been shown to be protective against cardiovascular disease . We estimated the influence of exercise , occupational physical activity , and household work with regard to risk of acute myocardial infa rct ion ( MI ) . Special interest was focused on potential interaction among these aspects of physical activity . Method : We analyzed data from a large population -based case-control study conducted in Stockholm , Sweden , 1992–1994 . Cases comprised 1204 men and 550 women , age 45–70 years , who experienced their first MI during the study period . The controls , 1538 men and 777 women , were r and omly selected from the study base , matched on sex , age , and hospital catchment area . The results were adjusted for several potential confounding factors . Results : Exercise , walking or st and ing at work , and doing dem and ing household work were all associated with decreased risk of acute MI ; the estimated relative risks ( RRs ) ranged from 0.31 to 0.90 when all cases ( fatal and nonfatal ) were considered . In contrast , lifting or carrying at work , and an occupational workload perceived to be strenuous , were related to an increased risk of MI ( RRs ranging from 1.10–1.57 ) . We observed a synergistic benefit from exercise and walking or st and ing at work , and from household work and walking or st and ing at work . Conclusion : Aerobic physical activities such as exercise or walking at work seemed to reduce the risk of MI , whereas anaerobic activities such as heavy lifting at work were related to increased risk of MI
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 .