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 .
Can a simple measure of vigorous physical activity predict future mortality? Results from the OXCHECK study.
BACKGROUND As epidemiological studies have become more complex , dem and s for short , easily administered measures of risk factors have increased . This study investigates whether such a measure of physical activity is associated with the risk of death from all causes and death from specific causes . METHODS A prospect i ve follow-up study of 11,090 men and women , aged 35 - 64 years , recruited from five UK general practice s who responded to a postal question naire in 1989 .  Self-reported frequency of vigorous-intensity physical activity and data on confounding factors were collected at baseline survey . Death notifications up to 31 December 2001 were provided by the Office for National Statistics . The relative risk ( and 95 % confidence interval ) of dying associated with each level of exposure to physical activity was estimated by the hazard ratio in a series of Cox regression models . RESULTS After > 10 years ' follow-up there were 825 deaths among the 10 522 subjects with no previous history of angina or myocardial infa rct ion . Participation in vigorous exercise was associated with a significantly lower risk of all-cause mortality . Similar associations were found for ischaemic heart disease and cancer mortality , although the relationships were not significant at the 5 % level . CONCLUSIONS Simple measures of self-reported vigorous physical activity are associated with the risk of future mortality , at least all-cause mortality in a somewhat selected group . Interpretation of the finding should be treated with caution due to the reliance on self-report and the possibility that residual confounding may underlie the associations . Because moderate-intensity physical activity is also beneficial to health , short physical activity question naires should include measures of such physical activity in the future
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 .