Improving cycling performance: Transcranial direct current stimulation increases time to exhaustion in cycling

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dc.contributor.authorVitor-Costa M.
dc.contributor.authorOkuno N.M.
dc.contributor.authorBortolotti H.
dc.contributor.authorBertollo M.
dc.contributor.authorBoggio P.S.
dc.contributor.authorFregni F.
dc.contributor.authorAltimari L.R.
dc.date.accessioned2024-03-13T00:55:48Z
dc.date.available2024-03-13T00:55:48Z
dc.date.issued2015
dc.description.abstract© 2015 Wang et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.The central nervous system seems to have an important role in fatigue and exercise tolerance. Novel noninvasive techniques of neuromodulation can provide insights on the relationship between brain function and exercise performance. The purpose of this study was to determine the effects of transcranial direct current stimulation (tDCS) on physical performance and physiological and perceptual variables with regard to fatigue and exercise tolerance. Eleven physically active subjects participated in an incremental test on a cycle simulator to define peak power output. During 3 visits, the subjects experienced 3 stimulation conditions (anodal, cathodal, or sham tDCS-with an interval of at least 48 h between conditions) in a randomized, counterbalanced order to measure the effects of tDCS on time to exhaustion at 80% of peak power. Stimulation was administered before each test over 13 min at a current intensity of 2.0 mA. In each session, the Brunel Mood State questionnaire was given twice: after stimulation and after the time-to-exhaustion test. Further, during the tests, the electromyographic activity of the vastus lateralis and rectus femoris muscles, perceived exertion, and heart rate were recorded. RM-ANOVA showed that the subjects performed better during anodal primary motor cortex stimulation (491 ± 100 s) compared with cathodal stimulation (443 ± 11 s) and sham (407 ± 69 s). No significant difference was observed between the cathodal and sham conditions. The effect sizes confirmed the greater effect of anodal M1 tDCS (anodal x cathodal = 0.47; anodal x sham = 0.77; and cathodal x sham = 0.29). Magnitude-based inference suggested the anodal condition to be positive versus the cathodal and sham conditions. There were no differences among the three stimulation conditions in RPE (p = 0.07) or heart rate (p = 0.73). However, as hypothesized, RM- ANOVA revealed a main effect of time for the two variables (RPE and HR: p < 0.001). EMG activity also did not differ during the test accross the different conditions. We conclude that anodal tDCS increases exercise tolerance in a cycling-based, constantload exercise test, performed at 80% of peak power. Performance was enhanced in the absence of changes in physiological and perceptual variables.
dc.description.issuenumber12
dc.description.volume10
dc.identifier.doi10.1371/journal.pone.0144916
dc.identifier.issn1932-6203
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/36120
dc.relation.ispartofPLoS ONE
dc.rightsAcesso Aberto
dc.titleImproving cycling performance: Transcranial direct current stimulation increases time to exhaustion in cycling
dc.typeArtigo
local.scopus.citations102
local.scopus.eid2-s2.0-84956689050
local.scopus.subjectAdolescent
local.scopus.subjectAdult
local.scopus.subjectAnalysis of Variance
local.scopus.subjectElectromyography
local.scopus.subjectExercise
local.scopus.subjectFatigue
local.scopus.subjectHeart Rate
local.scopus.subjectHumans
local.scopus.subjectMale
local.scopus.subjectPsychomotor Performance
local.scopus.subjectTime Factors
local.scopus.subjectTranscranial Direct Current Stimulation
local.scopus.subjectYoung Adult
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84956689050&origin=inward
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