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An ultrasound evaluation of the relationship between changes in the lumbar perimuscular layer and Body Mass Index in people with non-specific lower back pain

De Coninck, K, Passfield, Louis, Arkesteijn, Marco, Dietz, Kristina Charlotte (2012) An ultrasound evaluation of the relationship between changes in the lumbar perimuscular layer and Body Mass Index in people with non-specific lower back pain. In: Journal of Bodywork and Movement Therapies. 16 (2). pp. 152-153. Elsevier (Unpublished) (doi:10.1016/j.jbmt.2012.01.065) (KAR id:58472)

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http://dx.doi.org/10.1016/j.jbmt.2012.01.065

Abstract

BACKGROUND Mechanisms underlying non-specific lower back pain are still poorly understood. In an ultrasound-based study, Langevin et al. [1] found differences in the lumbar connective tissue structures in people with non-specific lower back pain (LBP) compared to people without (no-LBP). The aim of this study is to extend the work of Langevin and colleagues, and evaluate the relationship between the lumbar perimuscular layer and Body Mass Index (BMI) in LBP and no-LBP people.

RESULTS The LBP and no-LBP groups did not significantly differ in age, sex, BMI or level of physical activity. Age (r= .452, p =.002) and BMI (r= .374, p =.013) showed significant positive correlations with perimuscular thickness, but not with perimuscular echogenicity. BMI significantly predicted perimuscular thickness (ANCOVA: p = .016), whereas group membership did not (ANCOVA:p=.168). Perimuscular echogenicity could be significantly predicted only by considering the interaction between group membership and BMI. The interaction between BMI and group membership accounted for 16% of the observed changes in perimuscular echogenicity (ANCOVA:p=.006). The interaction arose because in the no-LBP group, echogenicity significantly decreased as BMI increased (Regression:p = .005). In contrast, there was no systematic relationship between perimuscular echogenicity and BMI in the LBP group (Regression:p = .391).

CONCLUSIONS Measurements of echogenicity can only be accounted for by considering group membership (LBP and no-LBP) and BMI values jointly. The relationship between BMI and echogenicity (negative correlation) in the no-LBP group is not found in participants with LBP. Possible causes, which require further investigation, include: sub-failure, changes in movement patterns, chronic inflammation, fibrosis, and/or fatty tissue infiltration.

Item Type: Conference or workshop item (Paper)
DOI/Identification number: 10.1016/j.jbmt.2012.01.065
Uncontrolled keywords: Thoracolumbar fascia, diagnostic ultrasound, chronic lower back pain
Subjects: R Medicine > RB Pathology
Divisions: Faculties > Sciences > School of Sport and Exercise Sciences
Depositing User: Kyra De Coninck
Date Deposited: 09 Nov 2016 15:45 UTC
Last Modified: 29 May 2019 18:09 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/58472 (The current URI for this page, for reference purposes)
De Coninck, K: https://orcid.org/0000 - 0002-2672 - 6761
Passfield, Louis: https://orcid.org/0000-0001-6223-162X
Arkesteijn, Marco: https://orcid.org/0000-0001-6762-844X
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