Moderate amounts of regular exercise may lower mortality rates for prostate cancer survivors, according to a study presented at the American Association for Cancer Research Frontiers in Cancer Prevention Research Conference.
The study's authors explained that previous investigations focused on how exercise affected the risk of developing prostate cancer but failed to identify the exact molecular effects that exercise had on prostate cancer.
To examine exercise in relation to overall survival rates in prostate cancer survivors, lead author, Stacey Kenfield, ScD, epidemiology research associate at the Harvard School of Public Health, and colleagues assessed physical activity levels for 2686 males with prostate cancer before and after diagnosis.
Researchers found that men who engaged in 3 or more hours of Metabolic Equivalent Tasks (MET) a week—equivalent to jogging, biking, swimming, or playing tennis for about a half-hour per week—had a 35% lower risk of overall mortality. Furthermore, men who walked ≥90 minutes at a normal to brisk pace had a 51% lower risk of all-cause mortality compared to men who walked <90 minutes at an easy walking pace.
“We saw benefits at very attainable levels of activity,” said Kenfield. “Our data indicate that for prostate cancer survivors, a moderate amount of regular exercise may improve overall survival, while ≥5 hours per week of vigorous exercise may decrease the death rate due to prostate cancer specifically.”
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