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Yoga Helps Those With Asthma
Date:5/29/2009

Study finds practice can ease symptoms, raise awareness of breathing patterns

FRIDAY, May 29 (HealthDay News) -- Settling into a warrior or tree pose a few times a week seems to improve symptoms and quality of life for people with asthma.

In fact, participants in a recent trial studying the effects of Hatha yoga also reported that they had been able to cut back on some of their asthma medication, said Amy Bidwell, senior author of a study presented this week at the American College of Sports Medicine's annual meeting, in Seattle.

"It's dramatic but not surprising," said Dr. Jonathan Field, director of the allergy and asthma clinic at New York University School of Medicine/Bellevue Medical Center in New York City. "There have been some smaller studies that have stated this before, but I don't think they've ever used a standardized scale of this sort."

Bidwell, a doctoral student in the department of exercise science at Syracuse University, had injured her back when she was working as a personal trainer. "I opted for yoga, not surgery, and it pretty much healed me," she noted.

And while previous studies had been positive, most had looked at immediate physiological responses following a rigorous yoga practice, for example, twice a day for 10 days.

That regimen, Bidwell said, "really wasn't feasible," Bidwell said. "Three times a week for 10 weeks was more realistic."

Bidwell and her co-authors, one of whom is a physician, randomly assigned 20 individuals aged 20 to 65 to practice Hatha yoga two-and-a-half hours a week or to join a (non-yoga) control group, for a total of 10 weeks.

Results were based on a questionnaire that measured frequency and severity of symptoms, activities associated with breathlessness and social and psychological functioning.

"We hold poses up to a minute and focus on deep breathing, which is critical to asthmatics" said Bidwell, who is also a yoga instructor.

Heart rate variability, oxygen consumption and ventilation were also assessed while volunteers performed each of two tasks: handgrip for three minutes and an upright tilt for five minutes.

Overall, scores of individuals participating in the yoga arm of the trial improved an average of almost 43 percent.

There were few or no differences between the groups in heart rate variability, oxygen consumption or ventilation.

"There's not much of a downside to yoga unless you have a major orthopedic problem," said Bidwell, who does not hesitate to recommend the practice to asthmatics after receiving proper instruction.

"Breathing symptoms are such a big part of asthma in terms of gaining control over them. Yoga enhances awareness of breathing and you may be able to recognize early on when breathing is not at a level it should be, which would promote earlier care," Field said. "Also, it's been recognized that deep breathing in athletes -- swimmers or runners -- actually improves asthma. When you have more functional use of lungs, it protects against asthma."

Field added he would like to see more and larger studies on the subject.

More information

The American Yoga Association has more on this practice.



SOURCES: Jonathan Field, M.D., director, allergy and asthma clinic, New York University School of Medicine/Bellevue Medical Center, New York City; Amy Bidwell, M.S., doctoral candidate, department of exercise science, Syracuse University; May 27, 2009, presentation, American College of Sports Medicine annual meeting, Seattle


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