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KMID : 1151220210270030089
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Journal of Korean Academy of Orthopedic Manual Therapy
2021 Volume.27 No. 3 p.89 ~ p.98
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Effects of EMG-Biofeedback based Closed Kinetic Chain Exercise on Quadriceps Muscle Activity and Dynamic Balance in Patellofemoral Pain Syndrome 9)
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Kang Joo-Hyun
Kim Je-Ho
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Abstract
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Purpose: The purpose of this study was to determine the effects of electromyography (EMG)-biofeedback based closed kinetic chain exercise (CKCE) on quadriceps muscle activity and dynamic balance ability in patellofemoral pain syndrome (PFPS).
Methods: Thirty subjects with PFPS were included and they were divided into EMG-biofeedback using CKCE (Group Ⅰ) and squat exercise using CKCE (Group Ⅱ), each group consisted of 15 patients.
Group Ⅰ and Group Ⅱ was performed by the patients for three times a week, for six weeks. sEMG was used to measure quadriceps muscle activity and star excursion balance test (SEBT) was used to measure dynamic balance ability.
Results: According to the results of the comparisons between the groups, after intervention, quadriceps muscle activity and dynamic balance ability were significantly higher in Group Ⅰ than in the Group Ⅱ.
Conclusion: Findings of this study suggest that EMG-biofeedback using CKCE that provides real-time biofeedback information on muscle contraction may have a beneficial effect on selective muscle strength of vastus medialis oblique muscle and dynamic balance ability in PFPS.
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KEYWORD
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Patellofemoral pain syndrome, EMG-biofeedback, Quadriceps muscle activity, Dynamic balance
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