Inspiratory Muscle Training Using Tapered Flow Resistive Loading to Enhance Pulmonary Function in Smokers: A Randomized Controlled Trial. IJOPRP [Internet]. 2024 Oct. 30 [cited 2025 Oct. 12];3(9):369-78. Available from: https://inkwellinfinite.com/index.php/ijprp/article/view/54