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 .
Physical activity, functional limitations, and the risk of fall-related fractures in community-dwelling elderly.
This case-control study examines the association of vigorous and mild physical activity with  fall-related fractures in a community-dwelling population age 65 and older in South Florida .  Vigorous physical activity was defined as exercising , doing heavy housecleaning , or other hard labor three or more times per week in the month prior to the index date ; mild physical activity was defined as the number of hours per day subjects reported spending on their feet . A case was any subject who sustained a fall-related fracture ( ICD-9CM-800 through ICD-9CM-829 ) over a 21-month period ( n = 471 ) . Controls were at 10 % r and om sample selected from the Health Care Financing Administration Medicare files ( n = 712 ) . The presence of any limitation in activities of daily living ( ADL ) significantly modified the effect of vigorous physical activity . Physically active subjects with no limitations ( ADL = 0 ) were less likely to sustain a fall-related fracture than were inactive subjects with an adjusted odds ratio ( aOR ) of 0.6 , ( 0.5 - 0.8 95 % CI ) , and active subjects with any limitation ( ADL > or = 1 ) had an aOR of 3.2 ( 1.1 - 9.8 95 % CI ) . Limiting this analysis to 159 hip fracture cases produced similar results .  Mild physical activity  was not associated with fracture . These results suggest that vigorous physical activity is associated with a lower fracture risk among elderly persons who have no limitation in ADL and with a higher risk among those with any limitations
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 .