This study was designed to evaluate the effectiveness of 12 weeks' home exercise training using the Nintendo ® Wii Fit system in patients with COPD. Following an initial pilot study at one institution to determine the physiological responses to exercise training using the home based interactive computer system, a longitudinal study was performed to evaluate outcomes across several areas. Outcomes were measured at baseline, after 6 weeks of standard care, and after 6 and 12 weeks of home exercise training. Three hospital based pulmonary rehabilitation centers in Connecticut participated in the longitudinal study.