Dyspnea is the main complaint of patients with COPD. Dyspnea is explained largely by the distension, objectified by measuring inspiratory capacity (IC), which places the diaphragm at a disadvantage to be effective, which raises the sensation of dyspnea.
Currently, inspiratory muscles training is recommended by the French-language Society of Pneumology, in case of an objective reduction of the strength of these muscles (corresponding to maximum inspiratory pressure \<60 cm H20).
