Chronic obstructive pulmonary disease (COPD) can result from chronic bronchitis or emphysema. Some people may also have COPD and asthma, which can worsen both conditions. Chronic obstructive ...

The difference between the slow and fast capacity in ... three tests were performed in 67 patients with obstructive pulmonary emphysema with or without demonstrable bronchospasm.

“Patients with mild-to-moderate COPD who have low exercise tolerance are likely to experience poor respiratory health outcomes,” the investigators concluded. “Exercise tolerance may be considered one ...