A study concluded: In patients with restrictive thoracic disorders and noninvasive positive-pressure ventilation (NPPV), Respiratory Muscle Training (RMT) improved inspiratory muscle strength. Exercise performance and health-related quality of life (HRQOL) were improved when the 2 groups were compared. Respiratory Muscle Training (RMT) was practicable and safe despite severe respiratory impairment. Further evaluation, including different training intensities and modalities, seems warranted1.
1 Respiratory muscle training in restrictive thoracic disease: a randomized controlled trial