The Effect of Hip Abductor Muscles Strengthening according to NSCA Protocol on Pain and Function of lower extremity in Elite Distance Runners with Iliotibial Band Syndrome

Document Type : Research Paper


1 Department of Sport Sciences, Faculty of Human Sciences and Sport Sciences, University of Gonbadekavoos

2 Department of Health and Rehabilitation in Sport, Faculty of Sport Science and Health, University of Shahid Beheshti


Iliotibial band syndrome (ITBS) is a common injury in distance runners. Thus, this study had investigated the effect of a special strengthening exercise program for abductor's muscles according to NSCA protocol, on pain reduction and lower extremity function (LEF) improvement of elite distance runners with ITBS.
Methods: The subjects of the present study were 32 elite distance runners who were randomly divided into two groups (control and experiment). The pain was assessed by the Visual Analogue Scale of pain (VAS) and the function of the lower extremity was assessed by Lower Extremity Functional Scale (LEFS). In the statistical procedure, the Mixed Anova and Bonferroni tests were applied to determine the within-group and between-groups differences of variables, and for evaluating the stability level of protocols’ effect on the experimental group and comparing the stages, respectively.
Results: The results showed that the strengthening exercise program on hip abductor muscles caused a significant decrease in pain (P = 0.000). LEF showed a significant improvement in the experimental group, after the protocol (P=.000); and it was durable three months after the program completion.
Conclusion: NSCA protocol, can be an effective approach in reducing pain and improving LEF in elite distance runners with ITBS.