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KMID : 1012020230120010026
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Physical Therapy Rehabilitation Science
2023 Volume.12 No. 1 p.26 ~ p.32
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Comparison of Lower Extremity Muscle Activity According to Ankle Angle during Sling Bridge Exercise in Patients with Patellofemoral Pain Syndrome
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An Jong-Hoon
Jung Ji-Hye
Choi Jin-Hyung
Lee Seung-Won
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Abstract
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Objective: This study attempted to compare the effects of bridge exercise using a sling according to the angle of the ankle to confirm the effective lower extremity muscle activation posture of patients with patellofemoral pain syndrome(PFPS).
Design: Cross-sectional studyMethods: Seventeen patients with PFPS were recruited and the muscle activities of the vastus medialis, vastus lateralis, rectus femoris, and gluteus maximus were measured according to the ankle position (dorsiflexion, neutral, plantar flexion). After measuring the maximum number of isometric contractions of vastus medialis, vastus lateralis, rectus femoris, and gluteus maximus, bridging exercise using a sling according to each ankle posture was applied to measure lower extremity muscle activity. The evaluation was performed 3 times for 10 seconds. The three ankle postures were randomly performed and the average values were compared.
Results: As a result of this study, the vastus medialis muscle showed high muscle activity in the order of dorsiflexion, plantar flexion, and neutral position bridge exercise (p<0.05). And the vastus lateralis showed high muscle activity in the order of dorsiflexion, neutral, and plantar flexion (p<0.05). However, rectus femoris and gluteus maximus did not show significant muscle activity according to the ankle posture, but muscle activity was highest in the dorsiflexion posture.
Conclusions: As a result of this study, muscle activity was high in the order of vastus medialis and vastus lateralis during ankle dorsiflexion. This is thought to be a major factor that can be applied in various ways in clinical practice according to the ankle angle when treating PFPS patients.
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KEYWORD
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Sling exercise, Patellofemoral pain syndrome, Bridge exercise, Electromyography
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