Effect of Weight-bearing Therapeutic Exercise on the Q-angle and Muscle
Activity Onset Times of Elite Athletes with Patellofemoral Pain Syndrome: A Randomized
Controlled Trial |
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Authors: | Jehoon Lee Hwangjae Lee Wanhee Lee |
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Institution: | 1) Department of Physical Therapy, Sahmyook University, Republic of Korea |
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Abstract: | Purpose] The purpose of this study was to determine the effect of a weight-bearing
therapeutic exercise program for elite athletes diagnosed as having patellofemoral pain
syndrome (PFPS). Subjects] The subjects were 34 elite athletes from the Seoul T Center.
They were randomly allocated to three groups: an elastic band exercise group (EBG), a
sling exercise group (SEG), or a control group (CG). Methods] Therapeutic exercises were
performed 3 times a week for 8 weeks. The visual analogue scale (VAS) hamstring length,
and static and dynamic Q angles were used to test the exercise effect of the exercises, as
well as the onset time of electromyographic activity of vastus medialis oblique (VMO) and
vastus lateralis (VL). Results] Decrease of the dynamic Q-angle in EBG was significant
and significantly greater than that in CG. The decrease in VAS in SEG was significant and
significantly greater than that in CG. There were significant differences in the VL and
VMO activity onset times in SEG between pre- and post-test, and their differences between
pre- and post-test were also significantly different. Conclusion] Weight-bearing
therapeutic exercise is hoped that clinicians will use this information for better
implementation of effective exercise methods for elite athletes with PFPS.Key words: Electromyographic onset time, Patellofemoral pain syndrome, Q-angle |
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