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Wang H, Dai J, Wang C, Gao Z, Liu Y, Dai M, Zhao Z, Yang L, Tan G. Assessment of Low Back Pain in Helicopter Pilots Using Electrical Bio-Impedance Technique: A Feasibility Study. Front Neurosci 2022; 16:883348. [PMID: 35911977 PMCID: PMC9330605 DOI: 10.3389/fnins.2022.883348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 06/07/2022] [Indexed: 11/16/2022] Open
Abstract
Low back pain (LBP) is known to pose a serious threat to helicopter pilots. This study aimed to explore the potential of electrical bio-impedance (EBI) technique with the advantages of no radiation, non-invasiveness and low cost, which is intended to be used as a daily detection tool to assess LBP in primary aviation medical units. The LBP scales (severity) in 72 helicopter pilots were assessed using a pain questionnaire, while the bilateral impedance measurements of the lumbar muscle were carried out with a high precision EBI measurement system. Results showed that the modulus of lumbar muscle impedance increased with LBP scale whereas the phase angle decreased. For different LBP scales, significant differences were found in the modulus of lumbar muscle impedance sum on both sides (Zsum), as well as in the modulus and phase angle of lumbar muscle impedance difference between both sides (Zdiff and ϕdiff), respectively (P < 0.05). Moreover, Spearman’s correlation analysis manifested a strong correlation between Zsum and LBP scale (R = 0.692, P < 0.01), an excellent correlation between Zdiff and LBP scale (R = 0.86, P < 0.01), and a desirable correlation between ϕdiff and LBP scale (R = −0.858, P < 0.01). In addition, receiver operator characteristic analysis showed that for LBP prediction, the area under receiver operator characteristic curve of Zsum, Zdiff, and ϕdiff were 0.931, 0.992, and 0.965, respectively. These findings demonstrated that EBI could sensitively and accurately detect the state of lumbar muscle associated with LBP, which might be the potential tool for daily detection of LBP in primary aviation medical units.
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Affiliation(s)
- Hang Wang
- Department of Aerospace Medicine, Fourth Military Medical University, Xi’an, China
| | - Jing Dai
- Department of Aerospace Medicine, Fourth Military Medical University, Xi’an, China
| | - Chunchen Wang
- Department of Aerospace Medicine, Fourth Military Medical University, Xi’an, China
| | - Zhijun Gao
- Department of Aerospace Medicine, Fourth Military Medical University, Xi’an, China
| | - Yang Liu
- Department of Aerospace Medicine, Fourth Military Medical University, Xi’an, China
| | - Meng Dai
- Department of Biomedical Engineering, Fourth Military Medical University, Xi’an, China
| | - Zhanqi Zhao
- Department of Biomedical Engineering, Fourth Military Medical University, Xi’an, China
- Institute of Technical Medicine, Furtwangen University, Villingen-Schwenningen, Germany
| | - Lin Yang
- Department of Aerospace Medicine, Fourth Military Medical University, Xi’an, China
- *Correspondence: Lin Yang,
| | - Guodong Tan
- Air Force Medical Center, Fourth Military Medical University, Beijing, China
- Guodong Tan,
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Dibai-Filho AV, Oliveira AKD, Oliveira MP, Barros MA, Bevilaqua-Grossi D, Guirro RRDJ. Reliability of quantitative sensory testing on myofascial trigger points in the upper trapezius muscle of individuals with chronic neck pain. REVISTA DA ASSOCIAÇÃO MÉDICA BRASILEIRA 2022; 68:56-60. [DOI: 10.1590/1806-9282.20210762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 09/16/2021] [Indexed: 11/22/2022]
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