摘要：Physical activity surveillance in Canada has traditionally focussed on measuring and reporting on the most active end of the activity spectrum. Emerging research suggests that in addition to insufficient moderate-to-vigorous physical activity (MVPA), sedentary behaviour and inadequate sleep are also important risk factors for chronic disease. In order to create effective public health policy and program initiatives to target all levels of activity (MVPA, light physical activity, sedentary behaviour and sleep), the demand for reliable, nationally representative data and information on the patterns of all of these behaviours among Canadians has increased. As a result, the need for a broader, modernized approach to national physical activity surveillance, with the inclusion of sedentary behaviour, sleep and the proximal and distal factors that impact all of these behaviours, was identified as a priority for the Public Health Agency of Canada (PHAC) in 2014.
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