Document Classification

Section Type: METHODS

Text: Peak exercise workload (WLpeak), dyspnea (Borg), end-expiratory lung volume (EELV), tidal volume (VT), minute ventilation (VE), O2 uptake (VO2), and CO2 production (VCO2) were assessed in 10 COPD patients (FEV1 53 22 % pred) during three symptom-limited bicycle exercise tests while breathing i) without a ventilator (noPS), ii) with a pressure support (PS) of 0 cm H2O (PS0 ; IPAP & EPAP 4 cm H2O) and iii) PS of 10 cm H2O (PS10 ; IPAP 14 & EPAP 4 cm H2O) on separate days using a randomized crossover design.