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Manipulation, Elastic Modulus, Spine, Stiffness, Manual Therapy, Reproducibility of Results

Vaillant, Michele

Supervisor and department: Kawchuk, Gregory Physical Therapy

Examining committee member and department: Mushahwar, Vivian Biomedical Engineering Parent, Eric Physical Therapy

Department: Rehabilitation Medicine

Specialization:

Date accepted: 2010-09-30T17:24:21Z

Graduation date: 2010-11

Degree: Master of Science in Rehabilitation Science

Degree level: Master's

Abstract: Introduction: The purpose of this study was to determine the effect of spinal manipulation therapy SMT duration and amplitude on spinal stiffness. Methods: Simulated SMTs were performed at the L6 spinous process in twenty-two felines. SMTs ranging from 25 to 250 ms duration were performed. Groups 1 and 2 received maximal displacements of 1.0mm to 3.0mm. Groups 3 and 4 received maximal loads of 25% to 85% body weight. Local stiffness was quantified by applying an indentation to the vertebra.Results: Repeated SMTs caused minimal changes in stiffness. The interaction effect of duration X displacement in Groups 1 and 2, and the effect of duration in Group 3 were significant. Conclusion: Repeated SMTs cause minimal changes in stiffness thought to be due to a viscoelastic response. Some of the changes following select SMT conditions may be the result of an interaction effect between SMT duration and amplitude. No specific threshold condition was identified as causing a greater stiffness change.

Language: English

DOI: doi:10.7939-R3MH5H

Rights: License granted by Michele Vaillant mvaillan@ualberta.ca on 2010-09-29 GMT: Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.





Autor: Vaillant, Michele

Fuente: https://era.library.ualberta.ca/


Introducción



University of Alberta The Effect of the Duration and Amplitude of Spinal Manipulation Therapy on the Spinal Stiffness of a Feline Model by Michèle Vaillant A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Rehabilitation Science - Physical Therapy Faculty of Rehabilitation Medicine ©Michèle Vaillant Fall 2010 Edmonton, Alberta Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only.
Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the authors prior written permission. Examining Committee Gregory Kawchuk, Physical Therapy Eric Parent, Physical Therapy Vivian Mushahwar, Biomedical Engineering Abstract The effect of duration and amplitude of spinal manipulative therapy on the spinal stiffness of a feline model. Introduction: The purpose of this study was to determine the effect of spinal manipulation therapy (SMT) duration and amplitude on spinal stiffness. Methods: Simulated SMTs were performed at the L6 spinous process in twentytwo felines.
SMTs ranging from 25 to 250 ms duration were performed.
Groups 1 and 2 received maximal displacements of 1.0mm to 3.0mm.
Groups 3 and 4 received maximal loads of 25% to 85% body weight.
Local stiffness was quantified by applying an indentation to the vertebra. Results: Repeated SMTs caused minimal changes in stiffness.
The interaction effect of duration X displacement in Groups 1 an...





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