Amount and Intensity of Leisure-Time Physical Activity and Lower Cancer Risk

PURPOSE To determine whether recommended amounts of leisure-time physical activity (ie, 7.5-15 metabolic equivalent task [MET] hours/week) are associated with lower cancer risk, describe the shape of the dose-response relationship, and explore associations with moderate- and vigorous-intensity physical activity. METHODS Data from 9 prospective cohorts with self-reported leisure-time physical activity and follow-up for cancer incidence were...