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    Air Current Applied to the Face Improves Exercise Performance in Patients with COPD

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    Genre
    Post-print
    Date
    2015-08-09
    Author
    Marchetti, Nathaniel
    Lammi, Matthew R.
    Travaline, John M.
    Ciccolella, David
    Civic, Brian
    Criner, Gerard J.
    Department
    Thoracic Medicine and Surgery
    Subject
    COPD
    Dynamic hyperinflation
    Emphysema
    Exercise physiology
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/6393
    
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    DOI
    https://doi.org/10.1007/s00408-015-9780-0
    Abstract
    Purpose: 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.
    Citation
    Marchetti 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 work
    Springer Science and Business Media LLC
    Has part
    Lung, Vol. 193, Iss. 5
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    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.34944/dspace/6375
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