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Exercise May Curtail COPD Complications

Regular physical activity could cut need for hospital readmission for lung disease, study says
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WebMD News from HealthDay

By Robert Preidt

HealthDay Reporter

WEDNESDAY, April 9, 2014 (HealthDay News) -- Exercise might help reduce the risk of hospital readmission in people with a progressive lung condition called chronic obstructive pulmonary disease (COPD), a new study finds.

"Our findings suggest that regular physical activity could buffer the stresses of hospitalization," said study author Huong Nguyen, of the Kaiser Permanente Southern California Department of Research and Evaluation.

"Future studies will focus on determining whether we can reduce hospitalizations by improving physical activity in patients with COPD," Nguyen added.

COPD refers to a group of diseases, including emphysema and chronic bronchitis, that cause airflow blockage and breathing problems. Fifteen million Americans report they have a COPD diagnosis, according to the U.S. Centers for Disease Control and Prevention.

For this study, published April 9 in the Annals of the American Thoracic Society, researchers analyzed the health records of more than 6,000 California patients, aged 40 and older. All were hospitalized with COPD during 2011 and 2012. The patients provided information about their physical activity levels.

Compared to inactive patients, those who exercised 150 minutes a week (the equivalent of a half-hour, five days a week) or more were 34 percent less likely to be readmitted to the hospital within 30 days. Those who exercised less than 150 minutes a week still had a 33 percent lower risk compared to those who didn't exercise at all, the study found.

"The results of this study are groundbreaking because measures of physical activity were derived from routine clinical care, instead of lengthy physical activity surveys or activity devices in smaller research samples," Nguyen said in a Kaiser news release.

"Previous research has only analyzed the relationship between physical inactivity and increased [death] rate and hospitalizations, but not 30-day readmissions in patients with COPD," Nguyen added.

The study included white, black, Hispanic and Asian/Pacific Islander patients.

Many health care systems are looking at ways to reduce hospital readmissions, Nguyen said. "This study is novel in that we were able to capture information about patients' usual physical activity well before the initial hospitalization and provides evidence that supports the promotion of physical activity across the COPD care continuum," Nguyen added.

While the study doesn't establish a cause-and-effect relationship between exercise and lower odds of readmission, it does suggest a link exists between the two.

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