Hong C Z, Joynt R L, Lin J C, Lufty S, Causin P, Meltzer R J
Arch Phys Med Rehabil. 1981 Nov;62(11):565-9.
F waves were studied with stimulation of the ulnar nerve in normal subjects (25 men and 15 women, with an average age of 26.5 years) using an EMG machine that permits the simultaneous display of 8 sweeps. The axillary F-loop latency (AFLL), defined at the conduction time between the axilla (25cm from the sternal notch) and the spinal cord, was 9.17 +/- 0.81msec when 8 F responses were measured but was 8.57 +/- 1.00msec when 40 F responses were used. Data from men and women showed no significant statistical difference. The mean plus 2 standard deviations were 10.8 and 10.6msec for 8 and 40 responses, respectively. On the basis of these findings, an AFLL longer than 11msec should be considered abnormal in the young adult. Four measures repeated at weekly intervals showed no significant difference from week to week, indicating that the technique can be consistently and reliably applied at different times. The average duration of the F complex was 15.78 +/- 2.55msec and was about 80% of the average duration of the M wave.
在正常受试者（25名男性和15名女性，平均年龄26.5岁）中，使用一台能够同时显示8次扫描的肌电图仪，通过刺激尺神经来研究F波。腋部F波环潜伏期（AFLL）定义为腋窝（距胸骨切迹25厘米处）与脊髓之间的传导时间，测量8次F反应时为9.17±0.81毫秒，而测量40次F反应时为8.57±1.00毫秒。男性和女性的数据显示无显著统计学差异。8次和40次反应时，平均值加2个标准差分别为10.8毫秒和10.6毫秒。基于这些发现，在年轻成年人中，AFLL超过11毫秒应被视为异常。每周重复进行四次测量，各周之间无显著差异，表明该技术可在不同时间持续且可靠地应用。F复合波的平均时限为15.78±2.55毫秒，约为M波平均时限的80%。
