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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Respir Physiol Neurobiol. 2014 Apr 30;199:34–40. doi: 10.1016/j.resp.2014.04.003

Figure 3.

Figure 3

Figure 3

Figure 3

Figure 3

Results of cluster analysis of individual response ratings for dyspnea and perceived exertion obtained with the Borg CR-10 scale; and those obtained with the corresponding Dalhousie scale pictures, specifically the breathing effort and leg exertion constructs.