Extract Dyspnoea is the predominant symptom limiting exercise tolerance in people with chronic respiratory disease 4 and is often accompanied by exertional desaturation, with or without chronic hypoxaemia, during pulmonary rehabilitation (PR). Supplemental oxygen (O2) is frequently prescribed to maintain oxygen saturation (SpO2)≥90% 1, 2. However, fixed O2-flow rates cannot adapt to changing O2-needs during activity, which may still lead to desaturation 3, increased dyspnoea, and early termination of exercise, particularly during endurance training.
Schneeberger et al. (Thu,) studied this question.