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KMID : 1021220200110042178
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국제물리치료학회지
2020 Volume.11 No. 4 p.2178 ~ p.2183
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Multifidus Thickness Comparison between the Effectiveness of Abdominal Bracing and Maximum Expiration Maneuvers in Lumbo-Pelvic Upright Sitting Posture
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Ko Min-Joo
Kim Su-Jung
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Abstract
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Background: Trunk flexor-extensor muscles’ co-activation and upright posture are important for spinal stability. Abdominal bracing and maximal expiration are being used as exercises to excel torso co-contraction. However, no study has on comparison of the effect of this exercise on multifidus in the upright sitting posture.
Objectives: This study aims to verify the effectiveness of abdominal bracing and expiration maneuvers in lumbo-pelvic upright sitting.
Design: Cross-sectional study.
Methods: Eighteen healthy women were recruited for this study. The multifidus muscle thickness of all subjects was measured in three sitting conditions (lumbo-pelvic upright sitting, lumbo-pelvic upright sitting with abdominal bracing, and lumbo-pelvic upright sitting with maximum expiration) using ultrasound. One-way repeated measure analysis of variance was used for the evaluation.
Results: Compared to lumbo-pelvic upright sitting, lumbo-pelvic upright sitting with abdominal bracing and lumbo-pelvic upright sitting with maximum expiration were associated with significantly increment of muscle thickness. There was no significant difference in muscle thickness between lumbo-pelvic upright sitting with abdominal bracing and lumbo-pelvic upright sitting with maximum expiration.
Conclusion: Abdominal bracing and maximum expiration could be beneficial to increasing lumbar multifidus thickness in lumbo-pelvic upright sitting.
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KEYWORD
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Maximum expiration, Abdominal bracing, Multifidus, Lumbo-pelvic upright sitting posture
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