Women who sat for 6 or more hours per day had a 37% greater risk of death than women who sat less than 3 hours per day. Men who sat for 6 or more hours per day had an 18% greater risk of death than men who sat less than 3 hours per day. These results were identical even after adjustment for leisure time physical activity levels. This means that long periods of sitting were associated with increased risk of death, even if the people engaged in exercise during their leisure time. The following chart shows that sitting 6 or more hours per day was associated with a greater risk of death at all levels of physical activity in women. You can also see the progression in mortality risk as sitting time increases:

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