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 .
Relationship between components of leisure physical activity and mortality in Taiwanese older adults.
BACKGROUND Whether the major components of leisure physical activity ( number of types , intensity , frequency , and duration ) have independent contribution to mortality reduction and there is a minimum amount of activity beneficial for the elderly remain unclear . METHODS The prospect i ve follow-up study aim ed at examining the relationship between exercise components and total mortality in general elderly population . A total of 2113 persons aged 65 and older participating in 2001 Taiwan National Health Interview Survey were studied . Information regarding leisure physical activity , its energy parameters , other factors at baseline , and vital status at the end of 2003 was analyzed with Cox model . RESULTS A total of 197 deaths occurred during a 2-year follow-up . Regular exercisers reduced 35 % risk of death compared with sedentary individuals after adjustment for covariates . Moreover , exercisers with a weekly amount of energy exceeding 1000 kcal had significant benefit of risk reduction when energy expenditure is considered . There was a significant dose-response relationship between number of activity and the reduction in total mortality . The benefit on mortality reduction among the three components of total energy amount was only observed in intensity . CONCLUSIONS For the amount of energy dedicated to leisure physical activity , older persons are recommended to expend at least 1000 kcal per week through regular exercise for mortality reduction . In addition to energy amount , protection of exercise against death also increases with the number of activities . Among the three components of total amount of energy , only intensity is significantly associated with mortality reduction
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 .