Bavarsad 2015.

Study characteristics
Methods	Study design: RCT Study grouping: parallel‐group
Participants	Baseline characteristics IMT N (randomized/analyzed): 20/15 Loss to follow‐up or excluded: 5 Age mean (SD) in years: 58.8 (6.82) Gender (M/F): 13/2 BMI mean (SD), kg/m²: 24.88 (5.02) Control/Sham N (randomized/analyzed): 20/15 Loss to follow‐up or excluded: 5 Age mean (SD) in years: 54.2 (8.09) Gender (M/F): 14/1 BMI mean (SD), kg/m²: 24.97 (4.72) Overall N (randomized/analyzed): 40/30 Loss to follow‐up or excluded: 10 Age range (min, max): 45, 65 Gender (M/F): 27/3 COPD stage (GOLD): mild to severe Included criteria Patients with spirometric evidence of significant chronic airflow limitation(FEV1/FVC < 70%pred) with mild to very severe COPD diagnosis according to the GOLD criteria; Age range 45‑65 years; No history of PR; Established treatment plan 1 month prior to the study. Excluded criteria BMI > 35; Comorbid conditions such as diabetes, musculoskeletal disorders, cardiovascular diseases; and neurological diseases that can affect the results of 6MWD; Having exacerbation for 1 month prior to the study; A history of long‑term oxygen therapy; A history of spontaneous pneumothorax and rib fracture.
Interventions	Intervention characteristics IMT The training consisted of unsupervised sessions, 15 min/d, 6 d/week for 8 weeks. The device used was an incentive spirometer (Respivol), at a load equal to or more than the initial inspiratory volume. The researchers were informed of the training sessions through phone calls during the 8 weeks. A checklist, which was designed to be completed on weekdays, was prepared for the participants so that they could mark the relevant day after a training session Control No intervention was received by this group.
Outcomes	Dyspnea: Borg Notes: dyspnea was assessed at the beginning and the end of the 6MWD Functional exercise capacity: 6MWD Respiratory function: FEV1 (%pred) Respiratory function: FEV1 (L)
Identification	Sponsorship source: The Deputy of Research Affairs at the Ahvaz Jundishapur University of Medical Sciences Country: Iran Setting: Specialized Pulmonary Clinic of Ahvaz Author's name: Esmaeil Eidani Institution: Pulmonary Unit, Department of Medicine, Ahvaz Jundishapur University of Medical Sciences Email: esmaileidani@gmail.com Address: Ahzav, Iran
Notes