Inflammatory myopathies are rare autoimmune diseases leading to progressive muscle weakness, often including the respiratory muscles. This study aims to investigate whether inspiratory muscle training (IMT) using a threshold device can improve functional status in patients with inflammatory myopathy. Thirty-three patients will undergo a 3-month home-based IMT program with progressive resistance. Functional capacity, inspiratory muscle strength, lung function, diaphragmatic mobility, fatigue, and quality of life will be assessed at baseline and during follow-up. The primary hypothesis is that IMT will enhance inspiratory muscle strength and translate into better functional performance and quality of life.
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Change in maximal inspiratory pressure (MIP)
Timeframe: 3 months before training, baseline, 3 months (end of training), 6 months, 9 months, 12 months