Background and Aim: The aim of this study was to compare the effect and sustainability of eight weeks corrective exercises, postural reeducation and their combination on core stability in young females with lumbar hyperlordosis.
Methods: 55 female students with increased lumbar lordosis randomly divided into four groups (corrective exercise, postural reeducation,combination of exercise and postural reeducation and control). The degree of lordosis was measured by a flexible ruler and core muscls endurance by Mcgill tests before and after eight weeks, and then after  eight weeks of follow-up. 
Results: The results of repeated measure of ANOVA test indicated a significant difference between pre-test and post-test in study groups in reducing core stability. The results showed that pretest and posttest of exercise group compred with the postural reeducation and control group had a significant difference in core stability (p <0.05). In terms of sustainability the results showed that the difference between the exercise group and combined group with the control group was significant core stability score (p <0.05).
Conclusion: It seems that the use of corrective exercises, combined and postural reeducation program, are likely to be effective in improving core stability in young females with lumbar hyperlordosis, but the effect of the combined program was more than the other interventions.