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Cross-Talk in mechanomyographic signals from the forearm muscles during sub-maximal to maximal isometric grip force

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cris.virtual.department Universiti Malaysia Perlis
cris.virtualsource.department 2f6b649f-c6bf-4eb6-9e09-b7167b384563
dc.contributor.author Md. Anamul Islam
dc.contributor.author Kenneth Sundaraj
dc.contributor.author R. Badlishah, Ahmad
dc.contributor.author Sebastian Sundaraj
dc.contributor.author Nizam Uddin Ahamed
dc.contributor.author Md. Asraf Ali
dc.date.accessioned 2024-08-20T03:45:27Z
dc.date.available 2024-08-20T03:45:27Z
dc.date.issued 2014
dc.description.abstract This study aimed: i) to examine the relationship between the magnitude of cross-talk in mechanomyographic (MMG) signals generated by the extensor digitorum (ED), extensor carpi ulnaris (ECU), and flexor carpi ulnaris (FCU) muscles with the sub-maximal to maximal isometric grip force, and with the anthropometric parameters of the forearm, and ii) to quantify the distribution of the cross-talk in the MMG signal to determine if it appears due to the signal component of intramuscular pressure waves produced by the muscle fibers geometrical changes or due to the limb tremor. METHODS: Twenty, right-handed healthy men (mean ± SD: age  = 26.7±3.83 y; height  = 174.47±6.3 cm; mass  = 72.79±14.36 kg) performed isometric muscle actions in 20% increment from 20% to 100% of the maximum voluntary isometric contraction (MVIC). During each muscle action, MMG signals generated by each muscle were detected using three separate accelerometers. The peak cross-correlations were used to quantify the cross-talk between two muscles. RESULTS: The magnitude of cross-talk in the MMG signals among the muscle groups ranged from, R2(x, y) = 2.45-62.28%. Linear regression analysis showed that the magnitude of cross-talk increased linearly (r2 = 0.857-0.90) with the levels of grip force for all the muscle groups. The amount of cross-talk showed weak positive and negative correlations (r2 = 0.016-0.216) with the circumference and length of the forearm respectively, between the muscles at 100% MVIC. The cross-talk values significantly differed among the MMG signals due to: limb tremor (MMGTF), slow firing motor unit fibers (MMGSF) and fast firing motor unit fibers (MMGFF) between the muscles at 100% MVIC (p<0.05, η2 = 0.47-0.80). SIGNIFICANCE: The results of this study may be used to improve our understanding of the mechanics of the forearm muscles during different levels of the grip force.
dc.identifier.doi 10.1371/journal.pone.0096628
dc.identifier.uri https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0096628&type=printable
dc.identifier.uri https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0096628
dc.identifier.uri https://hdl.handle.net/20.500.14170/3463
dc.language.iso en
dc.relation.ispartof PLoS ONE
dc.relation.issn 1932-6203
dc.subject Medicine
dc.subject Science
dc.title Cross-Talk in mechanomyographic signals from the forearm muscles during sub-maximal to maximal isometric grip force
dc.type journal-article
dspace.entity.type Publication
oaire.citation.endPage 9
oaire.citation.issue 5
oaire.citation.startPage 1
oaire.citation.volume 9
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Malaysian Ministry of Health
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
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