Association of body mass index with exercise cardiopulmonary responses in lung function-matched patients with chronic obstructive pulmonary disease

Background and Objectives Lung function is traditionally used to define the severity of chronic obstructive pulmonary disease (COPD). However, this does not exclude other factors. This study investigated the influence of body mass index (BMI) on exercise responses and quality of life in patients with COPD matched for values of forced expiratory volume in 1 second (FEV1). Methods Underweight, normal-weight, and overweight patients with COPD,...