Open AccessA computational model to investigate the effect of pennation angle on surface electromyogram of Tibialis Anterior
Author(s) -
Diptasree Maitra Ghosh,
Deepak Kumar,
Sridhar P. Arjunan,
Ariba Siddiqi,
Ramakrishnan Swaminathan
Publication year - 2017
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0189036
Subject(s) - isometric exercise , electromyography , fractal dimension , biomedical engineering , anatomy , root mean square , mathematics , physics , fractal , medicine , mathematical analysis , physical medicine and rehabilitation , physical therapy , quantum mechanics
This study has described and experimentally validated the differential electrodes surface electromyography (sEMG) model for tibialis anterior muscles during isometric contraction. This model has investigated the effect of pennation angle on the simulated sEMG signal. The results show that there is no significant effect of pennation angle in the range 0° to 20° to the single fibre action potential shape recorded on the skin surface. However, the changes with respect to pennation angle are observed in sEMG amplitude, frequency and fractal dimension. It is also observed that at different levels of muscle contractions there is similarity in the relationships with Root Mean Square, Median Frequency, and Fractal Dimension of the recorded and simulated sEMG signals.