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Table 2 Test-retest reproducibility of MUNIX in patients with SCI and healthy subjects

From: Motor unit number index detects the effectiveness of surgical treatment in improving distal motor neuron loss in patients with incomplete cervical spinal cord injury

  Patients with cervical SCI Healthy subjects
Number of cases 21 15
Age range (years) 49.2 ± 11.8 45.0 ± 11.5
Height range (cm) 163.6 ± 9.2 166.2 ± 6.3
  ICC CCA ICC CCA
Abductor hallucis
 CMAP 0.99 0.99 0.99 0.99
 MUNIX 0.99 0.99 0.97 0.94
 MUSIX 0.96 0.93 0.96 0.95
Extensor digitorum brevis
 CMAP 0.99 0.97 0.98 0.97
 MUNIX 0.99 0.97 0.94 0.89
 MUSIX 0.95 0.90 0.91 0.84
Tibialis anterior
 CMAP 0.99 0.98 0.97 0.94
 MUNIX 0.96 0.92 0.94 0.90
 MUSIX 0.90 0.84 0.87 0.78
  1. MUNIX Motor unit number index, SCI Spinal cord injury, CMAP Compound muscle action potential, MUSIX Motor unit size index, ICC Intraclass correlation coefficient, CCA Correlation coefficient analysis