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Factors associated with improvement in breathing capacity during exercise in patients with chronic obstructive pulmonary disease

Objectives:  The aim of this study was to explore the relationship between resting pulmonary function indices and the ratio of minute ventilation at peak exercise to the maximal voluntary ventilation (V̇Emax/MVV) and to determine whether an improvement in breathing capacity during exercise (i.e. V̇Emax/MVV > 1) is associated with greater exercise capacity in patients with COPD.