Would Integrating Inspiratory Muscle Training into Pulmonary Rehabilitation of Adults with Burn Injuries Have Any Advantageous Effects? a Randomized, Double-Blind, Sham-controlled Study.

Objective: To determine the effectiveness of adding inspiratory muscle training (IMT) alongside a pulmonary rehabilitation protocol in terms of inspiratory muscle strength, lung function, and exercise capacity in burned adults.

Methods: A randomized, double-blinded, sham-controlled study. Fifty-two adult patients with burn injuries, more than 20 years old and at least 20% total body surface area, were assigned randomly either to the experimental or the conventional group. The participants in the experimental group were given IMT plus a pulmonary rehabilitation program; the conventional group received only a pulmonary rehabilitation program. The interventions were performed for 8 weeks. At the beginning and after 8 weeks of training, the respiratory muscles' strength, lung function and exercise capacity were all examined.

Results: After 2 months of training, the experimental group demonstrated statistically significant improvements than conventional group in maximum inspiratory pressure, maximum expiratory pressure, 6-minute walk test, forced vital capacity, and forced expiratory volume in 1 second (p<0.05).

Conclusion: An 8-week IMT program coupled with pulmonary rehabilitation increases respiratory muscle strength, pulmonary functions, and functional capacity in burn patients. IMT is a beneficial and efficient therapy that can be easily implemented for burn patients.