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Koomesh

Journal of Semnan University of Medical Sciences

e-ISSN 2345-3699
p-ISSN 1608-7046
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Cover image of the article: Effects of load and unstable support surface on postural control in patients with chronic low back pain

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Outline

Effects of load and unstable support surface on postural control in patients with chronic low back pain

Authors

Vahid Samadi, Sedighe KahriziSedighe Kahrizi ORCID,*, Mahmood Reza Azghani, Parviz Azadfallah, Mohammad Gholami Fesharaki
*Corresponding Author: Email: kahrizis@modares.ac.ir
Koomesh:Vol. 17, issue 3; 580-588
Published online:Sep 28, 2016
Article type:Research Article
Received:Apr 01, 2015
Accepted:Oct 02, 2015
How to Cite:Samadi V, Kahrizi S, Azghani MR, Azadfallah P, Gholami Fesharaki M. Effects of load and unstable support surface on postural control in patients with chronic low back pain. koomesh. 2016;17(3):e151204. doi:

Abstract

Introduction: Several studies have demonstrated the postural control alterations in patients with low back pain. However, the difference in center of pressure (COP) parameters in the body sway in unstable conditions is relatively unknown in these patients. Therefore, the aim of the present study was to investigate the effects of unstable load and support surface on postural control in chronic low back pain (CLBP) patients. Materials and methods: CLBP patients (n=20) (mean age 31.30 years and mean BMI 25.20 kg/m2) and 20 healthy subjects (mean age 30.00 years and mean BMI 24.12 kg/m2) were asked to hold a load weighing 10 percent of their body weight while standing. Experimental conditions were manipulated based on stability of load (stable or unstable) and support surface (firm or foam). Using a force plate, COP sway parameters including sway amplitude (and its standard deviation) and sway velocity (and its standard deviation) in anteroposterior (AP) and mediolateral (ML) directions were measured. Results: Patients with CLBP exhibited less AP sway amplitude compared to control subjects (P=0.03). Furthermore, they had less ML sway velocity while holding the unstable load (P=0.05) and more ML sway amplitude while standing on foam (P=0.04). Conclusion: In compare to healthy subjects, patients with CLBP demonstrated a different pattern of postural control during instability of load and support surface. In these conditions, altered proprioception and stiffening strategy can increase the risk of spine injuries

Highlights

KeywordsLow Back PainPostural ControlUnstable LoadSupport Surfaceکمردردکنترل وضعیتیبار ناپایدارسطح تکیه‌گاه

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Copyright

© 2016, Author(s). This open-access article is available under the Creative Commons Attribution 4.0 (CC BY 4.0) International License (https://creativecommons.org/licenses/by/4.0/), which allows for unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited.

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