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Table 2 The differences in the MPS MUNE, CMAP amplitude, and average SMUP area between ALS patients and control group (independent t test)

From: Motor unit number estimation versus compound muscle action potential in the evaluation of motor unit loss in amyotrophic lateral sclerosis

Variable ALS patients
n = 28
Control group
n = 28
p value
CMAP amplitude (mV)
MPS MUNE
Average SMUP area %
SMUP amplitude (μV)
4.68 ± 3.14
107.89 ± 53.7
4.8 ± 2.9
85.7 ± 67.1
23.4 ± 8.6
243.47 ± 47.6
0.1 ± 0.04
49.05 ± 8.5
< 0.001
< 0.001
< 0.001
0.003
  1. ALS amyotrophic lateral sclerosis, CMAP compound muscle action potential, MPS MUNE multipoint stimulation motor unit number estimation, SMUP single motor unit potential. (Ulnar nerve stimulation and recording from the ADM muscle)