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KMID : 0357220140260020068
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Journal of Korean Society Physical Therapy
2014 Volume.26 No. 2 p.68 ~ p.73
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Effects of EMG-Biofeedback Training on Functional Ability and Q-angle in Patellofemoral Pain Syndrome
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Park Seung-Kyu
Kang Jae-Young
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Abstract
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Purpose: The purpose of this study was to investigate the effect of closed kinetic chain exercise using EMG-biofeedback for selective training of the vastus medialis oblique on functional ability and Q-angle in subjects with patellofemoral pain syndrome.
Methods: Thirty participants who met the criteria were included in this study. Participants were randomly allocated to the control group (Group I, n=10), closed kinetic chain exercise group (Group II, n=10), and closed kinetic chain exercise using EMG-biofeedback group (Group III, n=10). Intervention was performed in three groups, three times per week, for a period of six weeks. Kujala patellofemoral score and Q-angle were measured before and after the experiment.
Results: Some significant differences in kujala patellofemoral score were observed in group Ⅱ and group Ⅲ, compared with group Ⅰ (p<0.01). There was no significant difference on in Q-angle at knee flexion angle 0˚. However, some significant differences in Q-angle at knee flexion 60˚ were observed in group Ⅲ, compared with group Ⅰ (p<0.01).
Conclusion: Closed kinetic chain exercise using EMG-biofeedback that provides real-time biometric information on selected muscles in order to increase the efficiency of treatment may be helpful in improvement of functional ability and Q-angle in patellofemoral pain syndrome.
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KEYWORD
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Electromyographic biofeedback, Functional ability, Q-angle, Patellofemoral pain syndrome
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