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Comparison of postural control between subgroups of persons with nonspecific chronic low back and healthy controls during the modified Star Excursion Balance Test

Physical Therapy Rehabilitation Science 2019년 8권 3호 p.125 ~ 133
 ( Shallan Amjad ) - Loma Linda University School of Allied Health Professions Department of Physical Therapy

 ( Lohman Everett ) - Loma Linda University School of Allied Health Professions Department of Physical Therapy
 ( Alshammari Faris ) - Hashemite University Faculty of Applied Medical Sciences Department of Physical Therapy
 ( Dudley Robert ) - Azusa Pacific University School of Behavioral and Applied Sciences Department of Kinesiology
 ( Gharisia Omar ) - Loma Linda University School of Allied Health Professions Department of Physical Therapy
 ( Al-Marzouki Rana ) - Loma Linda University School of Allied Health Professions Department of Physical Therapy
 ( Hsu Helen ) - Loma Linda University School of Allied Health Professions Department of Physical Therapy
 ( Daher Noha S. ) - Loma Linda University School of Allied Health Professions Department of Allied Health Studies

Abstract


Objective: To compare the postural control between non-specific chronic low back pain (NSCLBP) subgroups and healthy people during dynamic balance performance using a modified Star Excursion Balance Test (mSEBT).

Design: Cross-sectional study.

Methods: Eighteen NSCLBP subjects (9 active extension pattern [AEP], 9 flexion pattern [FP]), and 10 healthy controls were enrolled in this study. All subjects performed mSEBT on their dominant leg on a force plate. Normalized reach distance and balance parameters, including the center of pressure (COP) displacement and velocity, were recorded.

Results: There were significant differences in mean reach distances in both posterolateral and posteromedial (PM) reach directions between AEP and healthy subjects (p<0.001) and between FP and healthy subjects (p<0.001). However, there were no significant differences among the three groups in the anterior reach direction. Also, the results showed no significant differences in mean COP variables (velocity and displacement) between pooled NSCLBP and healthy subjects. However, the subjects were reclassified into AEP, FP and healthy groups and the results showed a significant difference in mean COP velocity in the PM direction between AEP and FP subjects (p=0.048), and between AEP and healthy subjects (p=0.024).

Conclusions: The findings in this study highlight the heterogeneity of the individuals with NSCLBP and the importance of identifying the homogenous subgroups. Individuals with AEP and FP experience deficits in dynamic postural control compared to healthy controls. In addition, the findings of this study support the concept of the Multidimensional Classification System.

키워드

Human body; Low back pain; Musculoskeletal diseases; Postural balance; Posture
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