Apologies for my slowness, I am being preoccupied with setting up a website.
I don't have actual links, but have a copy of the studies. Here:
Exercise Reduces Death Rate in Prostate Cancer Patients
Dec. 8, 2009 — As little as 15 minutes of exercise a day can reduce overall mortality rates in patients with prostate cancer, according to findings presented at the American Association for Cancer Research Frontiers in Cancer Prevention Research Conference, held here, Dec. 6-9, 2009.
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"We saw benefits at very attainable levels of activity," said Stacey A. Kenfield, Sc.D., epidemiology research associate at the Harvard School of Public Health and lead author of the study. "The results suggest that men with prostate cancer should do some physical activity for their overall health."
Researchers assessed physical activity levels for 2,686 patients enrolled in the Health Professionals Follow-up Study, both before and after diagnosis (men with metastases at diagnosis were excluded).
Men who engaged in three 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 percent lower risk of overall mortality.
Specific to walking, the researchers found that men who walked four or more hours a week had a 23 percent lower risk of all-cause mortality compared to men who walked less than 20 minutes per week. Men who walked 90 or more minutes at a normal to brisk pace had a 51 percent lower risk of death from any cause than men who walked less than 90 minutes at an easy walking pace.
Walking didn't show any effect on prostate cancer specific mortality, but more strenuous exercising did. Men who engaged in five or more hours of vigorous physical activity a week were at a decreased risk of dying from their prostate cancer.
"This is the first large population study to examine exercise in relation to mortality in prostate cancer survivors," said Kenfield. Previous studies focused on how exercise affects risk of developing prostate cancer. Kenfield said that researchers aren't sure of the exact molecular effects exercise has on prostate cancer, but exercise is known to influence a number of hormones hypothesized to stimulate prostate cancer, boost immune function and reduce inflammation.
"How these factors may work together to affect prostate cancer biologically is still being studied," she said.
"For now, our data indicate that for prostate cancer survivors, a moderate amount of regular exercise may improve overall survival, while five or more hours per week of vigorous exercise may decrease the death rate due to prostate cancer specifically."Share this story on Facebook, Twitter, and Google:
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Story Source:
The above story is reprinted from materials provided by American Association for Cancer Research.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
Exercise May Lower Risk of Death for Men With Prostate Cancer
ScienceDaily (Jan. 5, 2011) — A new study of men with prostate cancer finds that physical activity is associated with a lower risk of overall mortality and of death due to prostate cancer. The Harvard School of Public Health and University of California, San Francisco researchers also found that men who did more vigorous activity had the lowest risk of dying from the disease. It is the first study in men with prostate cancer to evaluate physical activity after diagnosis in relation to prostate cancer-specific mortality and overall mortality.
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The study appears in an advance online edition of the Journal of Clinical Oncology.
"Our results suggest that men can reduce their risk of prostate cancer progression after a diagnosis of prostate cancer by adding physical activity to their daily routine," said Stacey Kenfield, lead author of the study and a Harvard School of Public Health researcher. "This is good news for men living with prostate cancer who wonder what lifestyle practices to follow to improve cancer survival."
Prostate cancer is the most frequently diagnosed form of cancer among men in the United States and affects one in six U.S. men during their lifetime. More than 2 million men in the U.S. and 16 million men worldwide are prostate cancer survivors.
The study was conducted in 2,705 men diagnosed with prostate cancer in the Health Professionals Follow-Up Study over an 18-year period. The participants reported the average time per week they spent doing physical activity, including walking, running, bicycling, swimming and other sports and outdoor work.
The results showed that both non-vigorous and vigorous activity were beneficial for overall survival. Compared with men who walked less than 90 minutes per week at an easy pace, those who walked 90 or more minutes per week at a normal to very brisk pace had a 46% lower risk of dying from any cause.
Only vigorous activity -- defined as more than three hours per week -- was associated with reduced prostate cancer mortality. Men who did vigorous activity had a 61% lower risk of prostate cancer-specific death compared with men who did less than one hour per week of vigorous activity.
"We observed benefits at very attainable levels of activity and our results suggest that men with prostate cancer should do some physical activity for their overall health, even if it is a small amount, such as 15 minutes of activity per day of walking, jogging, biking or gardening," said Kenfield. "However, doing vigorous activity for three or more hours per week may be especially beneficial for prostate cancer, as well as overall health," she said.
This study was funded by the National Institutes of Health, Charles A. King Trust and the Prostate Cancer Foundation.
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Story Source:
The above story is reprinted from materials provided by Harvard School of Public Health, via Eurekalert
!, a service of AAAS.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
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Journal Reference:
1. S. A. Kenfield, M. J. Stampfer, E. Giovannucci, J. M. Chan. Physical Activity and Survival After Prostate Cancer Diagnosis in the Health Professionals Follow-Up Study. Journal of Clinical Oncology, 2011; DOI: 10.1200/JCO.2010.31.5226
There are 2 relevant studies on exercise and PCa, hope that helps.
