Effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states.
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 a...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Public Library of Science (PLoS)
2018-01-01
|
Series: | PLoS ONE |
Online Access: | http://europepmc.org/articles/PMC5912755?pdf=render |
id |
doaj-0d6835b6d1f44272a91d24103fdb479b |
---|---|
record_format |
Article |
spelling |
doaj-0d6835b6d1f44272a91d24103fdb479b2020-11-25T01:47:55ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-01134e019543710.1371/journal.pone.0195437Effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states.Naiandra DittrichDaniel AgostinoRoberta Antonini PhilippeLuiz Guilherme A GuglielmoNicolas PlaceThe 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.http://europepmc.org/articles/PMC5912755?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Naiandra Dittrich Daniel Agostino Roberta Antonini Philippe Luiz Guilherme A Guglielmo Nicolas Place |
spellingShingle |
Naiandra Dittrich Daniel Agostino Roberta Antonini Philippe Luiz Guilherme A Guglielmo Nicolas Place Effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states. PLoS ONE |
author_facet |
Naiandra Dittrich Daniel Agostino Roberta Antonini Philippe Luiz Guilherme A Guglielmo Nicolas Place |
author_sort |
Naiandra Dittrich |
title |
Effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states. |
title_short |
Effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states. |
title_full |
Effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states. |
title_fullStr |
Effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states. |
title_full_unstemmed |
Effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states. |
title_sort |
effect of hypnotic suggestion on knee extensor neuromuscular properties in resting and fatigued states. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2018-01-01 |
description |
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. |
url |
http://europepmc.org/articles/PMC5912755?pdf=render |
work_keys_str_mv |
AT naiandradittrich effectofhypnoticsuggestiononkneeextensorneuromuscularpropertiesinrestingandfatiguedstates AT danielagostino effectofhypnoticsuggestiononkneeextensorneuromuscularpropertiesinrestingandfatiguedstates AT robertaantoniniphilippe effectofhypnoticsuggestiononkneeextensorneuromuscularpropertiesinrestingandfatiguedstates AT luizguilhermeaguglielmo effectofhypnoticsuggestiononkneeextensorneuromuscularpropertiesinrestingandfatiguedstates AT nicolasplace effectofhypnoticsuggestiononkneeextensorneuromuscularpropertiesinrestingandfatiguedstates |
_version_ |
1725013906619891712 |