Journal of Semnan University of Medical Sciences
Validity and reliability of the designed attachments for measuring trunk rotators torques using Biodex dynamometer in patient with chronic low back pain
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Abstract
Introduction: Due to the trunk muscle weakness after chronic low back pain ( C LBP), the evaluation of their function is an important part of rehabilitation protocols for CLBP. Therefore, providing the appropriate tools to measure trunk rotation torque is important. This study has been designed to evaluate the reliability and validity of the attached instruments to Biodex 4Pro for the measuring of isometric and isokinetic torque of trunk rotator muscles. Materials and Methods: 17 patients with CLBP and 17 healthy subjects (aged and sex matched) participated in the study. The isometric and isokinetic torques of trunk rotator muscles to the left and right were evaluated in 3 sessions with 7 days interval by 2 different examiners. The Persian version of disability Oswestry questionnaire was used to evaluate the validity of instrument. Results: The findings showed that isokinetic and isometric torque of trunk rotator muscles are significantly lower in patients with CLBP than healthy subjects (P=0.013) . The findings also indicate a good inter-tester reliability (r=0.62 to 0.82, P
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© 2015, Author(s). This open-access article is available under the Creative Commons Attribution 4.0 (CC BY 4.0) International License (https://creativecommons.org/licenses/by/4.0/), which allows for unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited.
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