MedicalResearch.com Interview with:
Jasmine Lee, M.Sc. and Chris I. Ardern, Ph.D.
School of Kinesiology and Health Science
Toronto, ON, Canada
Medical Research: What is the background for this study?
Response: Although the benefits of physical activity are well known, the health and mortality risks associated with sedentary time (activities <1.5 MET)—which can occur in long, continuous bouts, such as at the workplace, during motorized transportation and via screen time— have been less frequently explored, and may differ across subgroups of the population. Like physical activity, sedentary time may fluctuate with major life events and occupation (e.g. aging, retirement, etc.), which raises the question of the short-term relationship between changes in sitting time and mortality risk.
Medical Research: What are the main findings?
Response: Maintenance of minimal sedentary time, as well as short-term reduction in sedentary time, were found to reduce the risk of all-cause and cancer- mortality amongst a sample of middle-aged and older women (50-79 y) who are prone to high rates of physical inactivity and sedentary time.