Objective: Multiple Sclerosis is a neurodegenerative disease that causes motor deficit affecting not only the limb muscles but also the respiratory muscles power and endurance and there is need to establish the efficacy of inspiratory muscle training on pulmonary functions in multiple sclerosis patients.
Methods: Forty patients of both gender with mild to moderate remitting relapsing multiple sclerosis, their age 25-45 years old, would be assigned randomly into two equal groups; group (I) consist from 20 patients, received inspiratory muscle training (IMT) 3 times per week for 8 weeks in addition to conventional chest physiotherapy, group (II) consist from 20 patients received conventional chest physiotherapy. Pulmonary function measurement done for all participants before and after training program.
Results: The results showed that forced vital capacity (FVC), maximum inspiratory pressure (MIP) and maximum voluntary ventilation (MVV) significantly increased within group (1) using IMT with a higher percentage of improvement 23.4%, 40.33%, and 31.43% respectively when compared to group (II) using conventional chest physiotherapy alone.
Conclusion: Inspiratory muscle training using IMT device provided a significant improvement in the pulmonary functions. Inspiratory muscle training (IMT) as a part of physical rehabilitation program is strongly recommended for multiple sclerosis patients to improve respiratory muscle power and endurance.
Key Words: Multiple sclerosis, Inspiratory muscle training, pulmonary response.