Figure 2From: Cigarette Smoking and Dyspnea PerceptionRelationship between change (Δ) in inspiratory capacity (IC) and slope of Borg score on FEV1% fall during methacholine-induced bronchoconstriction. Symbols indicate: square – hypoperceivers; triangles – normoperceivers; circles – hyperperceivers. (Reproduced with permission from reference [36].) For explanation see text.Back to article page