Investigation of the neural drive during vibration exercise by high-density surface-electromyography

L. Xu, F. Negro, C. Rabotti, D. Farina, M. Mischi

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

Mechanical vibration applied directly to the muscle belly or tendon has been reported to elicit a specific reflex loop named tonic vibration reflex (TVR), which involves motor unit (MU) activation synchronized and un-synchronized within the vibration cycle. Indirect application of vibration to the muscle by vibration exercise (VE) has also been suggested to evoke TVR, as evidenced by the spectral peaks observed at the vibration frequency in the surface electromyography (sEMG). However, other studies interpreted these spectral peaks as the result of motion artifacts (MAs). The aim of the present study is, therefore, to investigate MU activation patterns during VE in order to clarify the nature of those spectral peaks. To this end, low-intensity isometric contractions were executed with and without VE, and high-density sEMG measurements were performed during the contraction tasks. MU action potential (MUAP) trains were extracted by decomposing the recorded high-density sEMG signals. The spectra of the MUAP trains were then calculated and compared between vibration and no-vibration conditions. Clear MU synchronization was observed during VE, confirming the spectral peaks at the vibration frequency to be mainly due to the reflex loop rather than MAs.

Originele taal-2Engels
Titel41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2019
Pagina's1944-1947
Aantal pagina's4
DOI's
StatusGepubliceerd - jul 2019
Evenement41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2019 - Berlin, Duitsland
Duur: 23 jul 201927 jul 2019

Congres

Congres41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2019
LandDuitsland
StadBerlin
Periode23/07/1927/07/19

Vingerafdruk Duik in de onderzoeksthema's van 'Investigation of the neural drive during vibration exercise by high-density surface-electromyography'. Samen vormen ze een unieke vingerafdruk.

  • Citeer dit

    Xu, L., Negro, F., Rabotti, C., Farina, D., & Mischi, M. (2019). Investigation of the neural drive during vibration exercise by high-density surface-electromyography. In 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2019 (blz. 1944-1947) https://doi.org/10.1109/EMBC.2019.8857922