Effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states

Details

Ressource 1Download: journal.pone.0195437.pdf (5579.66 [Ko])
State: Serval
Version: Final published version
Serval ID
serval:BIB_CC34C6EBAE35
Type
Article: article from journal or magazin.
Collection
Publications
Title
Effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states
Journal
PloS one
Author(s)
Dittrich N., Agostino D., Antonini Philippe R., Guglielmo LGA, Place N.
ISSN
1932-6203 (Online)
ISSN-L
1932-6203
Publication state
Published
Issued date
2018
Peer-reviewed
Oui
Volume
13
Number
4
Pages
NA
Language
english
Abstract
The aim of this study was to investigate whether hypnotic suggestions can alter knee extensor neuromuscular function at rest and during exercise.
Thirteen healthy volunteers (8 men and 5 women, 27 ± 3 years old) took part in this counterbalanced, crossover study including two experimental (hypnosis and control) sessions. Knee extensor neuromuscular function was tested before and after hypnosis suggestion by using a combination of voluntary contraction, transcutaneous femoral nerve electrical stimulation and transcranial magnetic stimulation (TMS). A fatiguing exercise (sustained submaximal contraction at 20% maximal voluntary contraction (MVC) force) was also performed to evaluate the potential influence of hypnosis on the extent and origin of neuromuscular adjustments.
Hypnosis did not (p>0.05) alter MVC force or knee extensor neural properties. Corticospinal excitability, assessed with the amplitude of knee extensor motor evoked potentials, was also unchanged (p>0.05), as was the level of intracortical inhibition assessed with paired pulse TMS (short-interval intracortical inhibition, SICI). Time to task failure (~300 s) was not different (p>0.05) between the two sessions; accordingly, hypnosis did not influence neuromuscular adjustments measured during exercise and at task failure (p>0.05).
Hypnotic suggestions did not alter neuromuscular properties of the knee extensor muscles under resting condition or during/after exercise, suggesting that hypnosis-induced improvement in exercise performance and enhanced corticospinal excitability might be limited to highly susceptible participants.
Keywords
Adult, Cross-Over Studies, Evoked Potentials, Motor, Exercise/physiology, Fatigue/physiopathology, Fatigue/therapy, Female, Femoral Nerve/physiology, Humans, Knee, Knee Joint, Male, Motor Cortex/physiology, Muscle Contraction/physiology, Muscle Fatigue/physiology, Muscle, Skeletal/physiology, Pyramidal Tracts/physiology, Rest, Suggestion, Transcranial Magnetic Stimulation, Transcutaneous Electric Nerve Stimulation
Pubmed
Web of science
Open Access
Yes
Create date
26/04/2018 18:23
Last modification date
09/05/2019 1:20
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