Abstract:
:During fatiguing contractions, many adjustments in motor units behaviour occur: decrease in muscle fibre conduction velocity; increase in motor units synchronisation; modulation of motor units firing rate; increase in variability of motor units inter-spike interval. We simulated the influence of all these adjustments on synthetic EMG signals in isometric/isotonic conditions. The fractal dimension of the EMG signal was found mainly influenced by motor units firing behaviour, being affected by both firing rate and synchronisation level, and least affected by muscle fibre conduction velocity. None of the calculated EMG indices was able to discriminate between firing rate and motor units synchronisation.
journal_name
Med Eng Physjournal_title
Medical engineering & physicsauthors
Mesin L,Dardanello D,Rainoldi A,Boccia Gdoi
10.1016/j.medengphy.2016.09.022subject
Has Abstractpub_date
2016-12-01 00:00:00pages
1530-1533issue
12eissn
1350-4533issn
1873-4030pii
S1350-4533(16)30222-3journal_volume
38pub_type
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