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KMID : 1142420220200010051
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PNF and Movement
2022 Volume.20 No. 1 p.51 ~ p.58
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The Effects of Thoracic-Lumbar Dissociate and Slump Motions on Thoracic-Lumbar Erector Spinae and Rectus Abdominis Activity
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Jung Ju-Hyeon
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Abstract
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Purpose: The purpose of this study was to investigate the effect of thoracic-lumbar dissociation motion and slump motionon thoracic-lumbar erector spinae and rectus abdominis muscle activity.
Methods: Seventeen healthy adult volunteers participated in this study. All participants performed two motions(thoracic-lumbar dissociation motion, slump motion). Muscle activation during the two motions was measured using asurface electromyography device. The data from this were collected from the iliocostalis thoracis, iliocostalis lumborum,and rectus abdominis. The activities of these muscles before and after each motion were then compared.
Results: The iliocostalis thoracis activation was significantly greater during the thoracic-lumbar dissociation motion thanduring the slump motion (p <0.05). The iliocostalis lumborum activation was greater during the slump motion than duringthe thoracic-lumbar dissociation motion (p <0.05). The rectus abdominis activation was lesser during the slump motionthan during the thoracic-lumbar dissociation motion (p <0.05).
Conclusion: This study confirmed that individual contraction of the erector spinae muscles is possible during thoracic-lumbardissociation motion, which increases the stability of the thoracic spine. In addition, this motion could improve controlof the rectus abdominis. Therefore, thoracic-lumbar dissociation motion should be considered for rehabilitation programsfor patients with kyphosis and back pain.
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KEYWORD
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Thoracic-lumbar dissociate motion, Slump motion, Muscle activity
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