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Transcranial Direct Current Stimulation with the Halo Sport Does Not Improve Performance on a Three-Minute, High

Collin T Garner1, Rachel M Dykstra1, Nicholas J Hanson1

  • 1Human Performance and Health Education, Western Michigan University, Kalamazoo, MI, USA.

International Journal of Exercise Science
|September 27, 2021
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Transcranial direct current stimulation (tDCS) via Halo Sport headphones did not enhance cycling performance in a high-intensity test. Heart rate was slightly higher, but key performance metrics showed no significant improvements.

Keywords:
energy systemglycolytictDCS

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Area of Science:

  • Neuroscience
  • Sports Science
  • Exercise Physiology

Background:

  • Transcranial direct current stimulation (tDCS) is explored for performance enhancement.
  • Halo Sport headphones offer a user-friendly tDCS application for athletes.
  • The purported ergogenic effects of tDCS in sports require rigorous investigation.

Purpose of the Study:

  • To investigate the impact of tDCS using Halo Sport headphones on cycling performance.
  • To assess physiological and perceptual responses during a high-intensity cycling test under tDCS.

Main Methods:

  • Eighteen healthy individuals underwent a 3-minute high-intensity cycling test after a 20-minute warm-up with either active or sham tDCS via Halo Sport headphones.
  • Measurements included ratings of perceived exertion (RPE), heart rate (HR), power output, and quadriceps electromyography (EMG).
  • Statistical analyses involved two-way repeated measures ANOVAs and paired samples t-tests.

Main Results:

  • Mean heart rate was significantly higher during the active tDCS condition (p = 0.038).
  • No significant differences were observed between active and sham tDCS for mean RPE, cadence, speed, power, or EMG.
  • The study found no statistically significant ergogenic effect of tDCS via Halo Sport on the tested performance variables.

Conclusions:

  • Current findings do not support the use of Halo Sport headphones for enhancing high-intensity cycling performance.
  • While HR was elevated, other performance indicators remained unaffected, suggesting a lack of ergogenic benefit.
  • Further research is recommended to explore potential nuances or different applications of tDCS in athletic contexts.