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European Spine Journal

, Volume 14, Issue 2, pp 185–191 | Cite as

Repositioning accuracy and movement parameters in low back pain subjects and healthy control subjects

  • Martin DescarreauxEmail author
  • Jean-Sébastien Blouin
  • Normand Teasdale
Original Article

Abstract

Study Design: A control group study with repeated measures. Objective: To compare trunk repositioning parameters in chronic low back pain (LBP) and healthy subjects. Summary and background data: Recent evidence suggests that chronic LBP patients exhibit deficits in trunk proprioception and motor control. Trunk repositioning and the various spatio-temporal parameters related to it can be used to evaluate sensori-motor control and movement strategies. Methods: Fifteen control subjects and 16 chronic LBP subjects participated in this study. Subjects were required to reproduce different trunk position in flexion (15°, 30° and 60°) and extension (15°). In the learning phase preceding each condition, visual feedback was provided. Following these learning trials, subjects were asked to perform ten consecutive trials without any feedback. Movement time, movement time variability and peak velocity were obtained and a temporal symmetry ratio was calculated. Peak angular position variability and absolute error in peak angular position were also calculated to evaluate spatial accuracy. Results: Two subgroups of LBP patients were identified. One subgroup of LBP subjects demonstrated longer movement time and smaller peak velocities and symmetry ratios than normal subjects. No group difference was observed for peak angular position variability and absolute error in peak angular position. Conclusion: Chronic LBP patients, when given a sufficient learning period, were able to reproduce trunk position with a spatial accuracy similar to control subjects. Some LBP subjects, however, showed modifications of movement time, peak velocity and acceleration parameters. We propose that the presence of persistent chronic pain could induce an alteration or an adaptation in the motor responses of chronic LBP subjects.

Keywords

Trunk positioning Low back pain Motor control Sensori-motor deficits 

Notes

Acknowledgements

The authors thank Marcel Kaszap for technical support. This study was supported by FCQ, CIHR-FCQ, NSERC-Canada and FCAR-Québec.

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • Martin Descarreaux
    • 1
    • 2
    • 2
    Email author
  • Jean-Sébastien Blouin
    • 1
  • Normand Teasdale
    • 1
  1. 1.Département de ChiropratiqueUniversité du Québec à Trois-RivièresTrois-RivièresCanada
  2. 2.Faculté de Médecine, Division de KinésiologieUniversité LavalCanda

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