Journal
JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY
Volume 68, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jelekin.2022.102725
Keywords
Diabetic peripheral neuropathy; High-density surface electromyography; Conduction velocity; Motor Unit; Motor unit territory area; Discharge rate
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The aim of this study was to determine whether HD-sEMG is sensitive to detecting changes in motor unit behavior in healthy adults and type 2 diabetes mellitus patients with different levels of DPN. The results support the use of HD-SEMG as a method to detect peripheral and central changes related to DPN.
The aim of this study was to determine whether HD-sEMG is sensitive to detecting changes in motor unit behavior amongst healthy adults and type 2 diabetes mellitus (T2DM) patients presenting diabetic peripheral neuropathy (DPN) at different levels. Healthy control subjects (CON, n = 8) and T2DM patients presenting no DPN symptoms (ABS, n = 8), moderate DPN (MOD, n = 18), and severe DPN (SEV, n = 12) performed isometric ankle dorsiflexion at 30 % maximum voluntary contraction while high-density surface EMG (HD-sEMG) was recorded from the tibialis anterior muscle. HD-sEMG signals were decomposed, providing estimates of discharge rate, motor unit conduction velocity (MUCV), and motor unit territory area (MUTA). As a result, the ABS group presented reduced MUCV compared to CON. The groups with diabetes presented significantly larger MUTA compared to the CON group (p < 0.01), and the SEV group presented a significantly lower discharge rate compared to CON and ABS (p < 0.01). In addition, the SEV group presented significantly higher CoVforce compared to CON and MOD. These results support the use of HD-SEMG as a method to detect peripheral and central changes related to DPN.
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