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. 2013 Feb 21;22(1):101–111. doi: 10.4104/pcrj.2013.00025

Figure 3.

Figure 3

Qualitative descriptors of exertional dyspnoea (at the end of symptom-limited cycle exercise) of ‘unsatisfied inspiration’, ‘inspiratory difficulty’, and ‘shallow breathing’ were more common among patients with chronic obstructive pulmonary disease (COPD) than in healthy subjects (*p<0.05). Modified from O'Donnell et al.29 with permission