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Table 2 Results of ENG, SEP of tibial nerves and MEP. Difference of parameters before and after the training period

From: HAL® exoskeleton training improves walking parameters and normalizes cortical excitability in primary somatosensory cortex in spinal cord injury patients

 

Pre-post difference

 

Pre-post difference

 

Electroneurography

CMAP [mV]

Conduction velocity (motor) [m/s]

SNAP [μV]

Conduction velocity (sensory) [m/s]

Peroneal nerve, right (motor)

−1.7

3.0

  

Peroneal nerve, left (sensory)

  

−4

−2

Tibial nerve, left (motor)

0.8

3.0

  

Sural nerve, right

  

6.0

1

SEP of tibial nerve

P40 [ms]

P1N2 [μV]

  

Left

−0.8/ NR = 8

−0.1/ NR = 8

  

Right

−0.8/ NR−8

−0.1/ NR = 8

  

MEP anterior tibial muscles

CMCT [ms]

PMCT [ms]

  
 

1 patient had contraindication (aneurysma coil); for all other patients CMCT and PMCT could not be calculated due to highgrade lesion or conduction block (missing MEP or M-response or F-wave)

  
  1. Left/right, NR = no response, CMAP = compound muscle action potential, SNAP = sensory nerve action potential, SEP = somatosensory evoked potential, MEP = motor evoked potential, CMCT = central motor conduction time, PMCT = peripheral motor conduction time