Transcranial direct current stimulation (tDCS) over the left prefrontal cortex does not affect time-trial self-paced cycling performance: Evidence from oscillatory brain activity and power output
Metadatos
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Holgado Núñez, Darías Manuel; Zandonai, Thomas; Ciria, Luis Fermín; Zabala Díaz, Mikel; Hopker, James; Sanabria Lucena, DanielEditorial
PLOS
Fecha
2019-02-06Referencia bibliográfica
Holgado D, Zandonai T, Ciria LF, Zabala M, Hopker J, Sanabria D (2019) Transcranial direct current stimulation (tDCS) over the left prefrontal cortex does not affect time-trial self-paced cycling performance: Evidence from oscillatory brain activity and power output. PLoS ONE 14(2): e0210873.
Patrocinador
This project was supported by grants from from the Spanish Ministerio de Economía, Industria y Competitividad-PSI2016-75956-P to D. S. and M.Z., a predoctoral grant from the Spanish Ministerio de Economía, Industria y Competitividad (BES-2014-069050) to L.F.C., and a Spanish “Ministerio de Educación, Cultura y Deporte” predoctoral grant (FPU14/06229) to D.H. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Resumen
To test the hypothesis that transcranial direct current stimulation (tDCS) over the left dorsolateral
prefrontal cortex (DLPFC) influences performance in a 20-min time-trial self-paced
exercise and electroencephalographic (EEG) oscillatory brain activity in a group of trained
male cyclists. There were no differences (F = 0.31, p > 0.05) in power output between the stimulation conditions:
anodal (235W[95%CI 222–249 W]; cathodal (235W[95%CI 222–248 W] and sham (234W[95%CI 220–248 W]. Neither heart rate, sRPE nor EEG activity were affected
by tDCS (all Ps > 0.05). tDCS over the left DLFC did not affect self-paced exercise performance in trained cyclists.
Moreover, tDCS did not elicit any change on oscillatory brain activity either at baseline or
during exercise. Our data suggest that the effects of tDCS on endurance performance
should be taken with caution.