The findings were reported on May 3 at the 2011 annual meeting of Pediatric Academic Societies in Denver, Colo.
Frequent lung infections, breathing problems and decreased lung function are the hallmark symptoms of CF, a genetic disorder marked by a disruption in the body’s ability to transport chloride in and out of cells that leads to the buildup of thick mucus in the lungs and other organs.
Because rigidly structured high-intensity exercise routines are hard to sustain over time, the Hopkins team designed exercise regimens that fit easily into each patient’s daily life. The researchers asked 58 children with CF, ages 6 to 16, to describe their daily routine and preferred physical activities. Based on their answers, the patients received individual exercise recommendations, including going for a stroll, taking a dance class, playing basketball in the driveway or playing the WiiTM.
Researchers compared the patients’ lung function and exercise tolerance before and after the two-month program. The exercise tolerance test consisted of walking multiple 10-meter (roughly 33 feet) intervals. After completing the exercise programs, patients were able to perform seven more 10-meter walking intervals, on average, than they were before completing the exercise regimen.
All children showed small bumps in pulmonary function tests, but children who increased their exercise capacity by 10 or more walking intervals showed even more noticeable improvement (5 percent or more) in lung function scores.
On average, patients also reported improved self-image, the researchers say.
Patients with CF follow complex treatment regimens including daily medication, breathing exercises and therapy with special devices to help break up mucus in their lungs. While the benefits of exercise on overall health are well known, many pulmonologists have shied away from formally prescribing exercise as part of the treatment plan, the investigators say.
The new Hopkins Children’s study may change that. Albeit preliminary, the findings suggest that patient-tailored exercise regimens can be easily incorporated into the treatment plan for patients with CF, the researchers say.
“Exercise, even when informal and unstructured, not only appears to improve lung status in children with CF, but goes a long way toward benefiting their overall health, self-perception and emotional well-being,” said lead investigator Shruti Paranjape, M.D., a pediatric pulmonary specialist at Hopkins Children’s.
Co-investigators on the research include Laura Barnes, B.A., formerly of Hopkins, now a medical student at the University of Minnesota; and Kathryn Carson, Sc.M., of the Johns Hopkins Bloomberg School of Public Health.
Founded in 1912 as the children’s hospital of the Johns Hopkins Medical Institutions, the Johns Hopkins Children’s Center offers one of the most comprehensive pediatric medical programs in the country, with more than 92,000 patient visits and nearly 9,000 admissions each year. Hopkins Children’s is consistently ranked among the top children’s hospitals in the nation. Hopkins Children’s is Maryland’s largest children’s hospital and the only state-designated Trauma Service and Burn Unit for pediatric patients. It has recognized Centers of Excellence in dozens of pediatric subspecialties, including allergy, cardiology, cystic fibrosis, gastroenterology, nephrology, neurology, neurosurgery, oncology, pulmonary, and transplant. Hopkins Children’s will celebrate its 100th anniversary and move to a new home in 2012. For more information, please visit www.hopkinschildrens.org
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