Researchers study biofeedback for asthma

“Previous studies have shown that biofeedback can improve asthma patients’ lung function and reduce the need for medications,” said principal investigator Fred Wamboldt, MD, Professor of Medicine at National Jewish Health. “As such, biofeedback holds great promise for becoming an effective alternative to controller steroid medications. We need, however, to understand exactly how these techniques affects the lungs and airways before either can become an accepted therapy.”

Any therapy that could serve as an alternative or complement to steroid therapy would be especially welcome. Although inhaled steroids have been shown to be safe, many people are concerned about side effects, such as weight gain and reduced growth, and do not take adequate amounts to control their asthma. Any therapy that could improve asthma control while reducing the need for expensive medications would also be welcome.

Sensitive monitors can detect brain waves and minute variations in the heart rate. Researchers at National Jewish Health and the Robert Wood Johnson Medical School in New Jersey will attach those monitors to asthma patients, who will be able to see their brain waves and heart rate in real time. The researchers will then help the study participants learn  how to control these important body functions. Previous studies have shown that such techniques can improve lung function and reduce the need for asthma medications.

In this study, researchers will examine more closely the physiological effects of these types of biofeedback. Asthma has two primary components, inflammation and ‘twitchy’ muscles surrounding the airways, which can overreact to mild irritants, contract and close the airways. The researchers will measure airway ‘twitchiness’ with a test known as a methacholine challenge. They will monitor inflammation by measuring exhaled nitric oxide.

“These tests will help us better understand how biofeedback affects the lungs,” said Dr. Wamboldt. “That will help us understand whether they could be most effective as alternative or complementary therapies to controller steroid medications or to inhaled rescue medications.”

Provided by National Jewish Health