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Effects of posture on the thickness of transversus abdominis in pain-free subjects
journal contribution
posted on 2023-06-08, 12:36 authored by Angelica Reeve, Andrew DilleyAndrew DilleyThe role of transversus abdominis (TrA) on spinal stability may be important in low back pain (LBP). To date, there have not been any investigations into the influence of lumbo-pelvic neutral posture on TrA activity. The present study therefore examines whether posture influences TrA thickness. A normative within-subjects single-group study was carried out. Twenty healthy adults were recruited and taught five postures: (1) supine lying; (2) erect sitting (lumbo-pelvic neutral); (3) slouched sitting; (4) erect standing (lumbo-pelvic neutral); (5) sway-back standing. In each position, TrA thickness was measured (as an indirect measure of muscle activity) using ultrasound. In erect standing, TrA (mean TrA thickness: 4.63±1.35mm) was significantly thicker than in sway-back standing (mean TrA thickness: 3.32±0.95mm) (p=00001). Similarly, in erect sitting TrA (mean thickness=4.30mm±1.58mm) was found to be significantly thicker than in slouched sitting (mean thickness=3.46mm±1.13mm) (p=0002). In conclusion, lumbo-pelvic neutral postures may have a positive influence on spinal stability compared to equivalent poor postures (slouched sitting and sway-back standing) through the recruitment of TrA. Therefore, posture may be important for rehabilitation in patients with LBP.
History
Publication status
- Published
Journal
Manual TherapyISSN
1532-2769Publisher
ElsevierExternal DOI
Issue
6Volume
14Page range
679-684Department affiliated with
- Clinical and Experimental Medicine Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-11-01Usage metrics
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