磁石對人體神經傳導影響之探討

磁場已經被多方面運用在診斷及治療疾病上。本實驗的目的，要探討磁石使用在人體時對於神經傳導的影響。本研究收錄12名正常受試者 (平均年齡30.0± 5.2歲，女性5位，男性7位)，兩個磁石分別貼置於左手腕遠端摺痕 (distal crease) 上，及距肘部屈曲側褶痕遠端5公分之前臂，正中神經經過處的皮膚表面上，每位受測者分別於施用磁石前，施用15分鐘時，移除後10分鐘，接受三次神經電學檢查，包括：正中神經之運動神經傳導檢查、感覺神經傳導檢查和F-波檢查。結果顯示，磁石治療15分鐘時，造成運動及感覺神經的傳導減慢、潛期延長、F波持續率下降、及F波潛期延長。且在磁石移除後10分鐘，仍維持其影響。至於複合肌肉動作電位波與感覺神經動作電位波之振幅，雖呈減小趨勢，但並未達統計學上顯著意義。在複合肌肉動作電位波面積方面，磁石造成遠端運動神經複合肌肉動作電位波面積減少。本研究顯示磁石對於神經傳導確實有顯著之影響

關鍵字

磁石；神經傳導

並列摘要

Background and purpose: Magnetic fields have been widely used in diagnosis and treatment of diseases. The purpose of this study is to investigate the effects of magnets on nerve conduction studies (NCS) in human. Methods: After excluding subjects with peripheral neuropathy or diabetic neuropathy, 12 normal subjects were recruited (mean age is 30.0 ± 5.2 years old; 5 are female and 7 are male). Two magnets were individually placed on the left distal wrist crease and on the forearm 5 cm distal to the elbow crease, where the median nerve goes underneath. NCS was performed before and 15 minutes during application, and 10 minutes after removal of magnets. The NCS's include motor nerve conduction study (MNCS), sensory nerve conduction study (SNCS) and F-wave study of the median nerve. Results: The motor nerve conduction velocity (MNCV) and sensory nerve conduction velocity (SNCV) became slower. Distal latency and F-latency were prolonged and F-persistence showed a significant decrease during application of magnets. The effects persisted even 10 minutes after removal of magnets. The amplitudes of compound muscle action potential (CMAP) and sensory nerve action potential (SNAP) showed a trend of decrease but not significant statistically. The area of CMAP was also significantly decreased during application of magnets. Conclusions: We conclude that magnets have significant effects on NCS's in human.

並列關鍵字

magnets ； nerve conduction

國際替代計量

磁石對人體神經傳導影響之探討

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