title: Improvement in volitional tests of muscle function alone may not be adequate evidence that inspiratory muscle training is effective.
authors.forename: M I
authors.initials: MI
authors.lastname: Polkey
authors.forename: J
authors.initials: J
authors.lastname: Moxham
mesh_terms: D000328:Adult; D001945:Breathing Exercises; D003964:Diaphragm / Q000502:physiology; D006801:Humans; D001239:Inhalation / Q000502:physiology; D029424:Pulmonary Disease, Chronic Obstructive / Q000534:rehabilitation*; D012132:Respiratory Muscles / Q000502:physiology*