Influence of Previous Iliotibial Band Syndrome on Coordination Patterns and Coordination Variability in Female Runners.

It is unknown if female runners that have sustained multiple iliotibial band syndrome occurrences run differently compared to runners that developed the injury once or controls. Therefore, purpose of this study was to determine if differences existed in coordination patterns and coordination variability among female runners with recurrent iliotibial band syndrome, one iliotibial band syndrome occurrence, and controls. Overground running trials were collected for 36 female runners (n = 18 controls). Lower extremity coordination patterns were examined during running via a vector coding analysis. Coordination variability was calculated via the ellipse area method. Separate one-way (group) Kruskal-Wallis tests were performed to compare each coordination pattern and coordination variability. Lower extremity coordination between frontal plane hip - transverse plane hip, frontal plane pelvis - frontal plane thigh, and frontal plane thigh - transverse plane shank was similar among groups and so may not be related to the risk of iliotibial band syndrome. Runners with one iliotibial band syndrome occurrence demonstrated greater coordination variability for two of three couplings compared to both controls and runners with recurrent iliotibial band syndrome. Thus, the number of previous injury episodes may influence coordination variability in female runners with a history of iliotibial band syndrome.