棒球投手與一般人之尺神經傳導速度之比較

A Comparision of the Ulnar Nerve Conduction Velocities between Baseball Pitchers and Normal Subjects

鍾宇政(Yeu-Jeng Jong) ； 張曉昀(Hsiao-Yun Chang)

《大專體育學刊》 7卷3期 (2005/09) Pp. 295-305

https://doi.org/10.5297/ser.200509_7(3).0023

摘要

神經傳導檢查是周邊神經損傷最佳的診斷方式，而棒球投手在長期肘關節外翻拉扯的動作下，可能對尺神經造成損傷，而使得前臂肌肉無力或萎縮，但過去對於棒球投手的手肘神經傳導與反應的因素較少被研究者提及，因此本研究的目的是為瞭解棒球投手與一般人尺神經傳導速度之比較。受試者為國內健康棒球投手8名及一般人8名共16名。分別在腕部、肘下及肘上部位給予超大電刺激量，同時於外展小指肌(ADM)與第一背側骨間肌(FDI)兩處做表面電極記錄，並測量外展小指肌與第一背側骨間肌的越肘(AB)、肘下(BW)及肘上(AW)的神經傳導速度之數值。結果發現：健康投手神經傳導速度明顯快於一般人，投手在慣用手尺神經傳導速度快於非慣用手。

關鍵字

棒球 ； 投手 ； 神經傳導速度 ； 尺神經

並列摘要

The nerve conduction study was the best method to diagnose peripheral nerve injury. The excessive valgus motion of elbow during throwing may stretch the ulnar nerves. Repeated stretch of the ulnar nerves may result in nerve injury. However, this problem was overlooked in the past. Therefore, the purpose of this study was to compare the ulnar nerve conduction velocity between normal subjects and healthy pitchers. There were 8 healthy pitchers and 8 normal age-match subjects to participate in the study. The supermaximal intensity was used to stimulate the ulnar nerve at wrist, low-elbow, and high-elbow areas, and the data were recorded at ADM and FDI muscles simultaneously to get the values of the ulnar nerve NCV at cross-elbow, low-elbow, and high-elbow segments. The results were: (1) The ulnar nerve NCV had significant difference between normal subjects and pitcher groups. The healthy pitchers had greater nerve conduction velocity than normal subjects in ulnar nerve. (2) In healthy pitchers, the nerve conduction velocity of ulnar nerve in their dominated hand were significantly greater than their non-dominate hands. From the present study, we concluded that the nerve conduction velocity of ulnar nerve which had improved result from the neuromuscular system of the healthy pitchers was adapted as the throwing pattern.

並列關鍵字

baseball ； pitcher ； nerve conduction velocity ； ulnar nerve

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