Purpose: The purpose of this study was Comparison of pulmonary function parameters changes at different altitudes in female athletes. Methods eleven voluntary Female athletes, (age; 22.27±0.65yr), (weight; 57.00±6.31kg), (Fat%:20.81±3.2 1) (Height; 160.54± 3.7cm and vo2max: 40.65±1.00) were selected to this study on spirometric parameters. Each subject was informed consent form. Respiratory function was assessed in participants before ascending at baseline (1400 meter) and after ascending at 3600 meter in savalan Mount and sea level (3 day's interval between with a Spiro lab II). Spirometric parameters r changes were compared using ANOVA for repeated measure with Bonferroni (post hoc) statistical analysis computations were performed by spss and p≤0.05 was considered significant. Results: spirometric parameters(FVC,FEV1,FEF25-75%,PEF,PIF,MVV, and VC) at altitude(3600 m) were significantly increased . PIF, FEV1, FEF25-75%, MVV was not significantly different between 3600m level and 1400m level. Conclusion: acute ascent to altitude above 3600m lessens airway resistance that facilitates expiratory airflow and increase majority Spirometric parameters
