There are many benefits of regular physical activity ranging from preventing chronic diseases to promoting weight management. Exercise is known to promote immunity and lower inflammation. Now for the first time research reports that regular exercise reduces prostate cancer death rates. The researchers continue to study the molecular effects of exercise on prostate cancer.
The study, presented at the December 6-9, 2009 American Association for Cancer Research Frontiers in Cancer Prevention Research Conference, investigated the relationship of exercise to mortality in prostate cancer patients. Researchers at the Harvard School of Public Health analyzed data from the Health Professionals Follow-Up Study including 2,686 prostate cancer survivors. Physical activity levels were assessed before and after prostate cancer diagnosis.
The researchers found that patients who participated in three or more hours of MET (Metabolic Equivalent Tasks) weekly had a 35% lower overall death rate. Three hours of MET (Metabolic Equivalent Tasks) is equivalent to 30 minutes of biking, swimming or jogging weekly. Furthermore, participants who walked four or more hours weekly had a 23% lower overall death rate. Patients who walked 90 or more minutes at a brisk pace had a 51% reduced risk of death, compared to those who walked less than 90 minutes at an easy pace.
"We saw benefits at very attainable levels of activity," says Stacey A. Kenfield, Sc.D., epidemiology research associate at the Harvard School of Public Health and lead author of the study, in a news release. "The results suggest that men with prostate cancer should do some physical activity for their overall health."
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