Air Current Applied to the Face Improves Exercise Performance in Patients with COPD
Lammi, Matthew R.
Travaline, John M.
Criner, Gerard J.
DepartmentThoracic Medicine and Surgery
Permanent link to this recordhttp://hdl.handle.net/20.500.12613/6393
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AbstractPurpose: Improving dyspnea and exercise performance are goals of COPD therapy. We tested the hypothesis that air current applied to the face would lessen dyspnea and improve exercise performance in moderate-severe COPD patients. Methods: We recruited 10 COPD patients (5 men, age 62 ± 6 years, FEV1 0.93 ± 0.11 L (34 ± 3 % predicted), TLC 107 ± 6 %, RV 172 ± 18 %) naïve to the study hypothesis. Each patient was randomized in a crossover fashion to lower extremity ergometry at constant submaximal workload with a 12-diameter fan directed at the patients face or exposed leg. Each patients’ studies were separated by at least 1 week. Inspiratory capacity and Borg dyspnea score were measured every 2 min and at maximal exercise. Results: Total exercise time was longer when the fan was directed to the face (14.3 ± 12 vs. 9.4 ± 7.6 min, face vs. leg, respectively, p = 0.03). Inspiratory capacity tended to be greater with the fan directed to the face (1.4 (0.6–3.25) vs. 1.26 (0.56–2.89) L, p = 0.06). There was a reduction in dynamic hyperinflation, as reflected by higher IRV area in the fan on face group (553 ± 562 a.u. vs. 328 ± 319 a.u., p = 0.047). There was a significant improvement in the Borg dyspnea score at maximal exercise (5.0 (0–10) vs. 6.5 (0–10), p = 0.03), despite exercising for 34 % longer with the fan directed to the face. Conclusions: Air current applied to the face improves exercise performance in COPD. Possible mechanisms include an alteration in breathing pattern that diminishes development of dynamic hyperinflation or to a change in perception of breathlessness.
CitationMarchetti N, Lammi M, Travaline JM, Ciccolella D, Civic B, Criner GJ. Air Current Applied to the Face Improves Exercise Performance in Patients with COPD. Lung. 2015;193(5):725-731. doi:10.1007/s00408-015-9780-0.
Citation to related workSpringer Science and Business Media LLC
Has partLung, Vol. 193, Iss. 5
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