An evaluation of three elements of pulmonary rehabilitation

In this study of 39 patients with severe chronic airflow limitation, an independent group design examined the effect on exercise performance of a six-week program of leg muscle training, inspiratory muscle training and postural drainage. Exercise performance was reassessed at three months after the completion of the training program. MANOVA analysis of the 12-minute walking distance test showed a significant training effect (p < 0.001) with the largest effect occurring with leg muscle training (873 to 952 metres), a placebo response with postural drainage (886 to 925 metres) and minimal change with inspiratory muscle training (911 to 920 metres). There was a carry over effect at three months with leg muscle training, that was not seen in the other groups.