A randomized, controlled trial comparing long-term and short-term exercise in patients with chronic obstructive pulmonary disease

PURPOSETo compare the effects of short-term (3 months) and long-term (18 months) involvement in an exercise program on self-reported disability and physical function in patients with chronic obstructive pulmonary disease (COPD).METHODSA total of 140 patients with COPD were studied in a randomized, s