Use of facemask and mouthpiece to assess constant-workrate exercise capacity in COPD

Medicine and Science in Sports and Exercise
Didier SaeyFrançois Maltais

Abstract

To compare the response to constant-workrate cycling exercise between the mouthpiece and the facemask in patients with chronic obstructive pulmonary disease (COPD). Ten patients with COPD (FEV1: 48 +/- 14% pred, mean +/- SD) performed two symptom-limited constant-workrate cycling exercise tests at 80% of their predetermined peak exercise capacity. One test was performed using a mouthpiece and the other with a facemask, in a random order. The endurance time to constant-workrate exercise was compared between the two interfaces. VO2, VCO2, ventilation (VE), inspiratory capacity, dyspnea Borg score, and heart rate responses during exercise were also compared. Endurance time was similar between the two interfaces (mean difference +/- SD, 30 +/- 74 s, P = 0.23). Except for the end-exercise values, which were lower with the facemask, the VO2, VCO2, and VE responses to submaximal exercise were similar between the two interfaces. Perception of dyspnea, inspiratory capacity, and heart rate kinetics were similar during the two exercise tests. No clear preference about either interface was expressed by the patients. The mouthpiece and the facemask can be used with comparable results to determine the endurance time to constant-workrate cycl...Continue Reading

References

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Citations

Aug 5, 2015·Journal of Sports Sciences·Dale R Wagner, Nicolas W Clark
Dec 20, 2019·European Respiratory Review : an Official Journal of the European Respiratory Society·Thomas RadtkeHelge Hebestreit

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