Journal article
Reduced instantaneous center of rotation movement in patients with low back pain
European spine journal, v 27(1)
2018
PMID: 28364336
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Purpose
The instantaneous center of rotation (ICR) can be used to investigate movement coordination and control in patients with low back pain (LBP). Tracking of the ICR in LBP patients has not been systematically investigated. This study aimed to (1) determine the within-session measurement error of ICR parameters, and (2) characterize the change in ICR among three groups of participants (no history of LBP = HC; history of LBP = HLBP; and current LBP = LBP).
Methods
Ninety-three participants (HC = 31; HLBP = 33; and LBP = 29) were recruited. Participants performed two sets of three repetitions of an active forward bend, while their lumbar and pelvic movements were recorded with an electromagnetic tracking system. Total ICR displacement and the radius of the bounding sphere containing the ICR were derived during the forward bending and the return to upright phases. Intra-class correlation coefficients (ICC
3,3
) and minimal detectable difference (MDD) were used to determine measurement error and interpret findings of the group analysis. One-way ANOVAs and post hoc Bonferroni comparisons were used to determine differences among groups.
Results
ICC
3,3
demonstrated excellent within-session test–retest reliability of the ICR parameters (ICC
3,3
= 0.86–0.97). The MDD values were 0.20–3.40 mm. Comparisons between the HC and LBP groups and between the HLBP and LBP groups showed significant differences (
p
< 0.05) for all ICR parameters, with medium effect sizes (0.51–0.66), except for total displacement during forward bending between the HC and LBP groups.
Conclusion
Less ICR displacement and variability in patients with LBP may indicate coping strategies to stiffen the lumbar spine. This could result from patients with LBP adopting a strategy of increased muscle activation to provide spinal stability during functional tasks.
Metrics
Details
- Title
- Reduced instantaneous center of rotation movement in patients with low back pain
- Creators
- Peemongkon Wattananon - Mahidol UniversityNattaporn Intawachirarat - Mahidol UniversityMarco Cannella - Drexel UniversityWon Sung - Drexel UniversitySheri P. Silfies - Drexel University
- Publication Details
- European spine journal, v 27(1)
- Publisher
- Springer Berlin Heidelberg
- Grant note
- Orthopaedic Section of the American Physical Therapy Association Talent Management Program, Mahidol University
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- College of Engineering; Physical Therapy (and Rehabilitation Sciences)
- Web of Science ID
- WOS:000422932600018
- Scopus ID
- 2-s2.0-85016620724
- Other Identifier
- 991019167557404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Clinical Neurology
- Orthopedics