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Changes in Nerve Excitability During Neural Stretching
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신경 신장 적용 시간에 따른 신경흥분성 변화

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Type
Academic journal
Author
Lee, Dong-Rour (좋은강안병원 물리치료실) Rhee, Min-Hyung (부산가톨릭대학교 대학원 물리치료학과) Eom, Ju-Ri (부산가톨릭대학교 대학원 물리치료학과) Kim, Jong-Soon (부산가톨릭대학교 보건과학대학 물리치료학과)
Journal
대한고유수용성신경근촉진법학회 PNF and movement PNF and movement 제16권 제2호 KCI Accredited Journals
Published
2018.1
Pages
287 - 294 (8page)

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Changes in Nerve Excitability During Neural Stretching
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Purpose: The neurodynamic test used to implicate symptoms arising from the nerve is proposed to selectively increase the strain of the nerve without increasing the strain of adjacent tissue, although this has not yet been established in the time of nerve tension application. This study aimed to investigate the acute effects of nerve stretching time on nerve excitability using compound nerve action potential (CNAP) analysis. Methods: Thirty healthy young adults (mean age=23.10 years) with no medical history of neurological or musculoskeletal disorder voluntarily participated in this study. Nerve excitability was assessed using the median nerve conduction velocity test. The amplitude of the CNAP was measured under three conditions: resting phase (supra-maximal stimulus, without nerve stretching), baseline phase (two-thirds of the supra-maximal stimulus, without nerve stretching), and stretch phase (two-thirds of the supra-maximal stimulus, with 1-5 minutes nerve stretching). One-way repeated measures ANOVA was conducted to compare the latency and amplitude of CNAP. A post-hoc test was analyzed using the contrast test. Results: The latency was significantly delayed after 1 min. of nerve stretching in comparison with the baseline test. However, no significant difference was found during the nerve stretching (1-5 min.). The amplitude was significantly increased by nerve stretching. Conclusion: Nerve stretching can induce nerve excitability without any nerve injury. Based on the results, more than 1 min. of nerve stretching as a neurodynamic test can be a useful method in the clinical setting.
#Neurodynamic test #Nerve stretching #Compound nerve action potential #Nerve excitability

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Aminoff MJ / 1998 / Electromyography in clinical practice: clinical and electrodiagnostic aspects of neuromuscular disease / Churchill Livingstone google schola Apelby-Albrecht M / 2013 / Concordance of upper limb neurodynamic tests with medical examination and magnetic resonance imaging in patients with cervical radiculopathy: a diagnostic cohort study / Journal Manipulative Physiological Therapeutics 36:626~632 Crossref Butler D / 1991 / Mobilisation of the nervous system / Churchill Livingstone google schola Butler D / 2000 / The sensitive nervous system / Noigroup Publications google schola Choi KC / 1989 / A study of nerve conduction velocity of normal adults / The Yeungnam University Medical Journal 6(1):151~163 Crossref

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