Twitch potentia induced by two different modalities of neuromuscular electrical stimulation: implications for motor unit recruitment.
Details
Serval ID
serval:BIB_405F5857F365
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Twitch potentia induced by two different modalities of neuromuscular electrical stimulation: implications for motor unit recruitment.
Journal
Muscle and Nerve
ISSN
1097-4598 (Electronic)
ISSN-L
0148-639X
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
51
Number
3
Pages
412-418
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Abstract
INTRODUCTION: We tested the hypothesis that twitch potentiation would be greater following conventional (CONV) neuromuscular electrical stimulation (50-µs pulse width and 25-Hz frequency) compared with wide-pulse high-frequency (WPHF) neuromuscular electrical stimulation (1-ms, 100-Hz) and voluntary (VOL) contractions, because of specificities in motor unit recruitment (random in CONV vs. random and orderly in WPHF vs. orderly in VOL).
METHODS: A single twitch was evoked by means of tibial nerve stimulation before and 2 s after CONV, WPHF, and VOL conditioning contractions of the plantar flexors (intensity: 10% maximal voluntary contraction; duration: 10 s) in 13 young healthy subjects.
RESULTS: Peak twitch increased (P<0.05) after CONV (+4.5±4.0%) and WPHF (+3.3±5.9%), with no difference between the 2 modalities, whereas no changes were observed after VOL (+0.8±2.6%).
CONCLUSIONS: Our results demonstrate that presumed differences in motor unit recruitment between WPHF and CONV do not seem to influence twitch potentiation results.
METHODS: A single twitch was evoked by means of tibial nerve stimulation before and 2 s after CONV, WPHF, and VOL conditioning contractions of the plantar flexors (intensity: 10% maximal voluntary contraction; duration: 10 s) in 13 young healthy subjects.
RESULTS: Peak twitch increased (P<0.05) after CONV (+4.5±4.0%) and WPHF (+3.3±5.9%), with no difference between the 2 modalities, whereas no changes were observed after VOL (+0.8±2.6%).
CONCLUSIONS: Our results demonstrate that presumed differences in motor unit recruitment between WPHF and CONV do not seem to influence twitch potentiation results.
Pubmed
Web of science
Create date
03/12/2014 15:45
Last modification date
20/08/2019 14:38
Usage data
