Analysis of the dynamics of emg signal indicators

Abstract

We analyzed EMG signals obtained by examining the long extensor of the trunk at the level of the lumbar spine (L4-L5 vertebrae) from 4 groups: 1 – healthy, 2 – healthy with pain, 3 – vertebrological, 4 – scoliosis. We analyzed dynamics of main statistical and spectral characteristics and can conclude that some parameters can be useful for analysis of EMG in dynamics: standard deviation, kurtosis, median frequency and low frequency.