In people aged over 45, increased time spent sitting daily is associated with increased risk of all-cause mortality independent of physical activity level.

摘要

Context Sedentary behaviour is defined by posture (sitting or lying) and low energy expenditure (<1.5 times the energy expenditure required for rest).The health effects of sedentary behaviour or sitting too much are not the same as the health effects of not getting enough moderate intensity physical activity. In 2011, for the first time, an American College of Sports Medicine position stand on exercise included recommendations to decrease and break up sitting time. This study examined the association of total daily sitting time with all-cause mortality in a large prospective cohort.