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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. 2019; 14(2):e0210873.Plos

Abstract

OBJECTIVES

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.

DESIGN

The study consisted of a pre-registered (https://osf.io/rf95j/), randomised, sham-controlled, single-blind, within-subject design experiment.

METHODS

36 trained male cyclists, age 27 (6.8) years, weight 70.1 (9.5) Kg; VO2max: 54 (6.13) ml.min-1.kg-1, Maximal Power output: 4.77 (0.6) W/kg completed a 20-min time-trial self-paced exercise in three separate sessions, corresponding to three stimulation conditions: anodal, cathodal and sham. tDCS was administered before each test during 20-min at a current intensity of 2.0 mA. The anode electrode was placed over the DLPFC and the cathode in the contralateral shoulder. In each session, power output, heart rate, sRPE and EEG (at baseline and during exercise) was measured.

RESULTS

There were no differences (F = 0.31, p > 0.05) in power output between the stimulation conditions: anodal (235 W [95%CI 222-249 W]; cathodal (235 W [95%CI 222-248 W] and sham (234 W [95%CI 220-248 W]. Neither heart rate, sRPE nor EEG activity were affected by tDCS (all Ps > 0.05).

CONCLUSION

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.

Authors+Show Affiliations

Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain. Mind, Brain and Behaviour Research Centre, Department of Experimental Psychology, University of Granada, Granada, Spain.Mind, Brain and Behaviour Research Centre, Department of Experimental Psychology, University of Granada, Granada, Spain.Mind, Brain and Behaviour Research Centre, Department of Experimental Psychology, University of Granada, Granada, Spain.Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.School of Sport and Exercise Sciences, Endurance Research group, University of Kent, Chatham, United Kingdom.Mind, Brain and Behaviour Research Centre, Department of Experimental Psychology, University of Granada, Granada, Spain.

Pub Type(s)

Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

30726234

Citation

Holgado, Darías, et al. "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, vol. 14, no. 2, 2019, pp. e0210873.
Holgado D, Zandonai T, Ciria LF, et al. 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. 2019;14(2):e0210873.
Holgado, D., Zandonai, T., Ciria, L. F., 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. https://doi.org/10.1371/journal.pone.0210873
Holgado D, et al. 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. 2019;14(2):e0210873. PubMed PMID: 30726234.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - 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. AU - Holgado,Darías, AU - Zandonai,Thomas, AU - Ciria,Luis F, AU - Zabala,Mikel, AU - Hopker,James, AU - Sanabria,Daniel, Y1 - 2019/02/06/ PY - 2018/07/17/received PY - 2019/01/03/accepted PY - 2019/2/7/entrez PY - 2019/2/7/pubmed PY - 2019/11/14/medline SP - e0210873 EP - e0210873 JF - PloS one JO - PLoS ONE VL - 14 IS - 2 N2 - OBJECTIVES: 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. DESIGN: The study consisted of a pre-registered (https://osf.io/rf95j/), randomised, sham-controlled, single-blind, within-subject design experiment. METHODS: 36 trained male cyclists, age 27 (6.8) years, weight 70.1 (9.5) Kg; VO2max: 54 (6.13) ml.min-1.kg-1, Maximal Power output: 4.77 (0.6) W/kg completed a 20-min time-trial self-paced exercise in three separate sessions, corresponding to three stimulation conditions: anodal, cathodal and sham. tDCS was administered before each test during 20-min at a current intensity of 2.0 mA. The anode electrode was placed over the DLPFC and the cathode in the contralateral shoulder. In each session, power output, heart rate, sRPE and EEG (at baseline and during exercise) was measured. RESULTS: There were no differences (F = 0.31, p > 0.05) in power output between the stimulation conditions: anodal (235 W [95%CI 222-249 W]; cathodal (235 W [95%CI 222-248 W] and sham (234 W [95%CI 220-248 W]. Neither heart rate, sRPE nor EEG activity were affected by tDCS (all Ps > 0.05). CONCLUSION: 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. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/30726234/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_ L2 - http://dx.plos.org/10.1371/journal.pone.0210873 DB - PRIME DP - Unbound Medicine ER -