Values are mean ± SD; BMI, body mass index; FVC, forced vital capacity; FEV₁, forced expiratory volume in one second;V̇ O_2PEAK, peak pulmonary oxygen uptake;V̇ _E /V̇ CO_2, ventilatory equivalent for carbon dioxide; OUES, oxygen uptake efficiency slope;V̇ O₂-AT, pulmonary oxygen uptake at the anaerobic threshold.