Asthma is a chronic lung disease characterized by airway inflammation and constriction, presents ongoing challenges despite advancements in treatment.The aim of this study is to deliver non-pharmacological interventions, comparing resistive diaphragmatic training (RDT) and volume-oriented spirometry, to assess their efficacy in enhancing pulmonary function and functional capacity among asthmatic patients. Method: This study will be conducted at "Gulab Devi Chest Hospital" Lahore, it is randomized clinical trial (RCT) which will divided into two groups: Group A include RDT along conventional physiotherapy treatment and Group B include volume-oriented spirometry along conventional physiotherapy treatment. Total 50 subjects will be recruited according inclusion and exclusions criteria by convenient sampling technique. Data collection procedure will follow standardized procedures like pre-assessment and post-assessment which will be after 6 weeks with spirometry, 6MWT, and the ACT. Hypothesis postulated that RDT will show greater mprovements in pulmonary function and functional capacity compared to volumes oriented spirometry. However, null hypothesis will suggest that there is no significant difference between the two interventions.