AP — A three-year exercise program improved survival in colon cancer patients and kept disease at bay, a first-of-its-kind international experiment showed.

With the benefits rivaling some drugs, experts said cancer centers and insurance plans should consider making exercise coaching a new standard of care for colon cancer survivors. Until then, patients can increase their physical activity after treatment, knowing they are doing their part to prevent cancer from coming back.

“It’s an extremely exciting study,” said Dr. Jeffrey Meyerhardt of Dana-Farber Cancer Institute, who wasn’t involved in the research. It’s the first randomized controlled trial to show a reduction in cancer recurrences and improved survival linked to exercise, Meyerhardt said.

Prior evidence was based on comparing active people with sedentary people, a type of study that can’t prove cause and effect. The new study — conducted in Canada, Australia, the United Kingdom, Israel and the United States — compared people who were randomly selected for an exercise program with those who instead received an educational booklet.

“This is about as high a quality of evidence as you can get,” said Dr. Julie Gralow, chief medical officer of the American Society of Clinical Oncology. “I love this study........

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