title: Investigation of muscle behavior during different functional electrical stimulation profiles using Mechanomyography.
abstract: Mechanomyography (MMG) is a technique for measuring muscle oscillations and fatigue. Functional electrical stimulation (FES) has been applied to control movements mainly in people with spinal cord injury (SCI). The goal of this study is the application of the MMG signal as a tool to investigate muscle response during FES. Ten healthy individuals (HI) and three SCI were submitted to four FES profiles in the rectus femoris (RF) and vastus lateralis (VL) muscles. Four FES profiles were applied in different days. The FES profile set to 1 kHz pulse frequency, 200 us active pulse duration and burst frequency of 50 Hz presented the lowest MMG root mean square and spectral median frequency values, suggesting less muscle modification. The MMG signal was different between HI and SCI but there was no difference between the RF and VL muscles.
authors.affiliation: Federal Technological University of Paraná, Curitiba, Ave Sete de Setembro 3165, Brazil. esecheeren@gmail.com
authors.forename: Eduardo M
authors.initials: EM
authors.lastname: Scheeren
authors.forename: Guilherme N
authors.initials: GN
authors.lastname: Nogueira-Neto
authors.forename: Eddy
authors.initials: E
authors.lastname: Krueger-Beck
authors.forename: Vera Lucia S N
authors.initials: VL
authors.lastname: Button
authors.forename: Percy
authors.initials: P
authors.lastname: Nohama
mesh_terms: D004558:Electric Stimulation; D004576:Electromyography / Q000379:methods*; D006801:Humans; D018482:Muscle, Skeletal / Q000502:physiology*