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Monday, 13-November-2006
(AP)- - Italian researchers have come up with a novel way for cardiac rehabilitation patients to exercise their damaged hearts without having to squeeze into spandex or gyrate in a gym: waltzing.

The dance proved to be just as effective as bicycle and treadmill training for improving exercise capacity in a study of 110 heart failure patients. Dancers also reported slightly more improvement in sleep, mood, and the ability to do hobbies, do housework and have sex than the others.

"This may be a more effective way of getting people to exercise, and may be more fun than running on a treadmill," said Dr. Robert Bonow, cardiology chief at Northwestern University School of Medicine. "Maybe we should try that here. I'm not sure we can get Americans to waltz, but they can certainly dance."

Exercise is crucial after people suffer heart problems, but getting people to stick with it is tough. As many as 70 percent drop out of traditional programs, said Dr. Romualdo Belardinelli, director of cardiac rehabilitation at Lancisi Heart Institute in Ancona, Italy.

"We have to find something that may capture the patients' interest," he said Sunday at an American Heart Association meeting in Chicago where he presented results of his study.

They chose waltzing because it is "internationally known" and is quite aerobic, as the study ultimately verified, he said.

The same researchers previously showed that waltzing could help heart attack sufferers regain strength. The new study involved 89 men and 11 women, average age 59, with heart failure. The condition occurs when weakened hearts can no longer pump blood effectively, making simple activities like climbing stairs and taking the dog for a walk tough to do, let alone enjoy.

Researchers assigned 44 patients to a supervised exercise training program of cycling and treadmill work three times a week for eight weeks. Another group of 44 took dance classes in the hospital gym, alternating between slow and fast waltzes for 21 minutes, three times a week for eight weeks. A third group of 22 patients had no exercise.

Heart rates were checked during both activities, more extensive exercise tests were done at the start and end of the study, and artery imaging exams were performed.

Cardiopulmonary fitness increased at similar rates among those who danced or exercised and did not change in those who did neither.

Oxygen uptake increased 16 percent among exercisers and 18 percent among dancers. The anaerobic threshold _ the point where muscles fatigue _ rose 20 percent among exercisers and 21 percent among dancers. Other measures, including a general index of fitness, were comparable.

Imaging showed that dancers' arteries were more able to dilate and expand in response to exercise than non-exercisers.

Part of the benefit may be that dancers had a partner and social companion rather than cycling or walking on a treadmill alone, doctors said.

"This type of program is more effective," Belardinelli said, "because it is fun."

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