American Cancer Society researchers finds that physical activity can be somewhat nullified by spend sitting too long. It may even raise the risk of an earlier death. Researchers say time spent sitting was independently associated with total mortality, regardless of physical activity level.
Spend more time active and less time sitting.
Sitting increases obesity, type 2 diabetes, cardiovascular disease risk factors, and unhealthy dietary patterns in children and adults (18-20), very few studies have examined time spent sitting in relation to total mortality.
Alpa Patel, Ph.D. analyzed survey responses from 123,216 individuals (53,440 men and 69,776 women) who had no history of cancer, heart attack, stroke, or emphysema/other lung disease enrolled in the American Cancer Society’s Cancer Prevention II study in 1992. They examined the amount of time spent sitting and physical activity in relation to mortality between 1993 and 2006.
Risk for women is greater. If women spent six hours per day sitting = 37 percent greater risk of dying than those who sat fewer than 3 hours a day during the time of their study.
The more leisure time spent sitting the higher the risk of mortality. If women spent six hours per day sitting = 37 percent greater risk of dying than those who sat fewer than 3 hours a day during the time of their study.
Men who sat more than 6 hours a day =18 percent greater risk of dying than those who sat fewer than 3 hours per day.
The longer one sits per day the greater the chances of cardiovascular disease mortality than for cancer mortality.
If physical activity is minimum than death rate increased for women (94%) and for men (48%).
The researchers examined the participants’ amount of time spent sitting and physical activity in relation to mortality over the 13-year period.
Dr. Patel says. “Prolonged time spent sitting, independent of physical activity, has been shown to have important metabolic consequences, and may influence things like triglycerides, high density lipoprotein, cholesterol, fasting plasma glucose, resting blood pressure, and leptin, which are biomarkers of obesity and cardiovascular and other chronic diseases.
The results are published in an early online edition of the American Journal of Epidemiology.
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