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KMID : 0608320210280040273
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Physical Therapy Korea
2021 Volume.28 No. 4 p.273 ~ p.279
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Effect of Backward Versus Forward Lunge Exercises on Trunk Muscle Activities in Healthy Participants
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Song Jae-Keun
Yoo Won-Gyu
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Abstract
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Background: Lunge exercises are lower extremity rehabilitation and strengthening exercises for patients and athletes. Most studies have shown the effectiveness of the forward and back-ward lunge exercises for treating patellofemoral pain and anterior cruciate ligament injuries (by increasing lower extremity muscle activity) and improving kinematics.
Objects: However, it is not known how the two different lunge movements affect trunk muscle activities in healthy individuals. The purpose of this study was to investigate the elec-tromyographic activity of the rectus abdominis and erector spinae muscles during forward and backward lunge exercises in healthy participants.
Methods: Twelve healthy participants were recruited. Electromyographic activity of the rec-tus abdominis and erector spinae was recorded using surface electrodes during forward and backward lunges, and subsequently normalized to the respective reference voluntary isometric contractions of each muscle.
Results: Activity of the erector spinae was significantly higher than that of the rectus abdomi-nis during all stages of the backward lunge (p < 0.05). The activity of the erector spinae was significantly greater during the backward than forward lunge at all stages (p < 0.05).
Conclusion: Backward lunging is better able to enhance trunk motor control and activate the erector spinae muscles.
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KEYWORD
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Electromyography, Exercise, Rectus abdominis, Visual feedback
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