Objective: This study was conducted to clarify the effect of different types of exercises in improving ventilatory functions in welders. Methods: Sixty male welders, age rangedbetween 20-30 years, have been selected from Abu Al Yazid welding exhaust factory at 6th of October industrial area. Data of each case were collected from the medical examination
and Spirometric results to measure forced vital capacity (FVC), forced expiratory volume in the first second (FEV1) and maximum voluntary ventilation (MMV). Before the period of training the workers were classified randomly into three groups. First group was trained by arm exercise connected with breathing. Second group was trained by incentive
spirometer. Third group was trained by both arm exercise and incentive spirometer. The ventilatory function test was performed to each subject pre and after two months of training to mark out the values of FVC, FEV1, and MVV. Results: Results showed that breathing exercise programs improve ventilatory functions (FVC, FEV1, MVV) after
two months of training. Conclusion: The study supports the importance of arm exercise connected with breathing and incentive spirometer as a method of breathing exercise in improving the ventilatory functions in welders.