Walking Instead of Sitting Prolongs Life, Even in Small Doses


Trading 2 minutes/hour of sedentary activity with light-intensity activity was linked to 33% lower mortality in the general population and 41% lower mortality in those with chronic kidney disease (CKD), according to an observational analysis published online April 30 in the Clinical Journal of the American Society of Nephrology.

"We hoped to understand whether lower duration of sedentary activities with higher duration of low- or light-intensity activities is associated with survival benefit," lead author Srinivasan Beddhu, MD, from the University of Utah School of Medicine in Salt Lake City, said in a news release.

Previous studies have suggested that sitting for long periods may increase the risk for chronic disease and early death. The Physical Activity Guidelines for Americans therefore recommend at least 150 minutes of moderate-intensity activity or 75 minutes of vigorous-intensity activity per week (2%, on average, of the total awake time). However, 80% of Americans fail to meet this goal.

Therefore, most people still have considerable time for standing or other low-intensity activities, as well as for casual walking or other light-intensity activities, that might offer additional reduction in risk for disease and death. MORE