“Inspiratory Muscle Training Using Tapered Flow Resistive Loading to Enhance Pulmonary Function in Smokers: A Randomized Controlled Trial”. International Journal of Physical Therapy Research & Practice 3, no. 9 (October 30, 2024): 369–378. Accessed October 12, 2025. https://inkwellinfinite.com/index.php/ijprp/article/view/54.