Inclusion Criteria:Patients both genders, with a clinical diagnosis of COPD confirmed by post bronchodilator spirometry administered by a pneumologist, classified as moderate to very severe obstruction in accordance with the GOLD criteria; ex- or non-smokers; oxygen dependent or not; clinically stable; no history of infection and no exacerbation of respiratory symptoms or changes in medication for at least two months before the study and that no present cardiac, rheumatic or an associated orthopedic disease that prevent them from performing the proposed evaluation tasks.