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Ogata Y, Kamijo M, Hanaoka M. A quantitative assessment of the mechanical effects on the lumbar spine and the effects on straight leg raising and lumbar flexion of segmental sustained rotation. J Phys Ther Sci. 2016;28(4):1318-24doi: 10.1589/jpts.28.1318.
Ogata, Y., Kamijo, M., & Hanaoka, M. (2016). A quantitative assessment of the mechanical effects on the lumbar spine and the effects on straight leg raising and lumbar flexion of segmental sustained rotation. Journal of physical therapy science, 28(4), 1318-24. https://doi.org/10.1589/jpts.28.1318
Ogata, Yoetsu, et al. "A quantitative assessment of the mechanical effects on the lumbar spine and the effects on straight leg raising and lumbar flexion of segmental sustained rotation." Journal of physical therapy science vol. 28,4 (2016): 1318-24. doi: https://doi.org/10.1589/jpts.28.1318
Ogata Y, Kamijo M, Hanaoka M. A quantitative assessment of the mechanical effects on the lumbar spine and the effects on straight leg raising and lumbar flexion of segmental sustained rotation. J Phys Ther Sci. 2016 Apr;28(4):1318-24. doi: 10.1589/jpts.28.1318. Epub 2016 Apr 28. PMID: 27190475; PMCID: PMC4868235.
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J Phys Ther Sci. 2016 Apr;28(4):1318-24. doi: 10.1589/jpts.28.1318. Epub 2016 Apr 28.

A quantitative assessment of the mechanical effects on the lumbar spine and the effects on straight leg raising and lumbar flexion of segmental sustained rotation.

Journal of physical therapy science

Yoetsu Ogata, Masayoshi Kamijo, Masaaki Hanaoka

Affiliations

  1. Koriyama Institute of Health Sciences, Japan.
  2. Course of Kansei Engineering, Faculty of Textile Science and Technology, Shinshu University, Japan.

PMID: 27190475 PMCID: PMC4868235 DOI: 10.1589/jpts.28.1318

Abstract

[Purpose] This study were to examine the strength and relative direction of the applied force from lumbar segmental sustained rotation (LSSR) on the lumbar spinous process, and to clarify the effects of LSSR on straight leg raising (SLR) and lumbar flexion (LF). [Subjects] 18 pain-free healthy adults volunteered for this study. [Methods] Applied force and direction were measured between the L5-S1 segments using tri-axial pressure sensors. Subjects participated in 3 trials. Subjects underwent localized right rotation, held for 10 seconds, of the L5 in relation to the S1. Sham group subjects followed LSSR group protocols; however L5-S1 rotation was absent. Control subjects rested on a plinth. SLR and LF were measured pre and post-trial. [Results] Outcome data for LSSR forces were as follows; x (0.06N (±0.29)), y (‒5.26N (±0.01)), z (6.16N (±1.33)), and resultant vector magnitude (8.19N (±1.12)). LSSR relative direction results were as follows: x-axis angle, 89. 6 ° (±1.5); y-axis, 130.9 ° (±5.6); and z-axis, 41.6 ° (±4.7). The LSSR group's LF and SLR were significantly increased compared with those of the sham and control groups. [Conclusion] The identified resultant vector magnitude was 8.19N, less than other techniques. LSSR effectively improves LF and bilateral SLR.

Keywords: Lumbar segmental sustained rotation; Relative direction and force; Tri-axial force measurement system

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