中文摘要：

目的通过对正常人体下肢施加不同频率振动刺激，观察其脊髓运动神经元是否存在谐振频率。方法共选取20例健康成年人作为研究对象，于仰卧位下分别给予20Hz、30Hz、40Hz、50Hz及60Hz振动刺激，振动刺激部位统一为左侧下肢腓骨远端，每种频率振动持续时问均为5min。于振动刺激前行胫神经F波、M波检测，于各种频率振动结束后立即行胫神经F波检测，计算F波平均波幅及F／Mmax，以观察机体脊髓运动神经元在不同频率振动下其兴奋性变化。

英文摘要：

Objective To explore the resonant frequencies of human spinal motor neurons. Methods Twenty healthy college students were recruited as the subjects. Each was put in a supine position and administered vi- bratory stimulation at 20 Hz, 30 Hz, 40 Hz, 50 Hz and 60 Hz on the left distal fibula just above the lateral malleolus for 5 minutes. M-waves and F-waves were recorded before each intervention. F-waves were also recorded immediately after each intervention.