Women who reported more than six hours per day of sitting (outside of work) were 37 percent more likely to die during the time period studied than those who sat fewer than three hours a day. Men who sat more than six hours a day (also outside of work) were 18 percent more likely to die than those who sat fewer than three hours per day. The association remained virtually unchanged after adjusting for physical activity level. Associations were stronger for cardiovascular disease mortality than for cancer mortality.
When combined with a lack of physical activity, the association was even stronger. Women and men who both sat more and were less physically active were 94 percent and 48 percent more likely to die during the study period, respectively, compared with those who reported sitting the least and being most active.