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By Salynn Boyles
WebMD Health News
Reviewed by Louise Chang, MD
April 15, 2012 -- Exercising may not be at the top of the "to do" list for most women undergoing treatment for breast cancer, but it probably should be, according to a new study.
The new research from the University of Miami finds that regular exercise can reduce depression, lessen fatigue, and improve general quality of life during treatment when combined with group-based behavioral therapy to reduce stress.
The research is not the first to show that physical activity helps breast cancer patients, but it is among the first to show that exercise enhances the benefits of other stress management efforts, says researcher Jamie M. Stagl, MS, who is a doctoral candidate in psychology.
"Women in the study benefited from even moderate activity," Stagl tells WebMD. "You don't have to go to the gym every day, and this is probably not the time to train for a marathon. Just taking a brisk walk or even playing with your kids can boost endorphin levels and make you feel a lot better."
One Survivor's Story
"I exercised at the gym before my diagnosis, but something told me to lace up my sneakers and get outside after my surgery," says King, who is now 34. "I just knew I wouldn't be sad while I was outside running. It also gave me some measure of control, which breast cancer takes away from you."
King didn't always feel up to exercising while undergoing chemotherapy, and she didn't push herself on the days when she felt the worst.
"But on the days when I was on the fence, I was always glad when I got out there because I felt so much better," she says.
Exercise Improves Mood, Energy Level
The study included 240 recently diagnosed breast cancer patients who had surgery four to 10 weeks before recruitment.
Half the women took part in a 10-week, group-based behavioral therapy program aimed at reducing stress, while the other half participated in a much less intensive, single-day educational session.
The researchers found that women who increased the time they spent engaged in physical activity between the time of surgery and other treatments had less fatigue-related disruptions in everyday activities.
Women in both groups who exercised more also experienced less depression and scored higher on tests measuring quality of life.
Weight Training Safe After Surgery
Cathy Bryan, MEd, a personal trainer in Seaford, Del., has been working with breast cancer patients for two decades.
"The conventional wisdom was that lifting more than 10 pounds was dangerous," she says.
But research Bryan took part in showed that a supervised program of weight lifting was not only safe, but beneficial, following lymph node removal.
She says many of the women in the study ended up exercising more after their diagnosis than before, and almost all derived some benefits from exercise.
Bryan advises working with a trainer who has experience with breast cancer patients, if possible.
It also helps patients regain a sense of control over their lives, King says.
"You lose control over so many things in your life when you have breast cancer," she says. "This is something that you can control."
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