A study tested if transcranial direct current stimulation (tDCS) could enhance endurance. Marathon Handbook reported on the findings from 53 trained men. They received either active or sham stimulation before running until exhaustion. The results showed no difference in time to exhaustion or perceived effort.
The study applied 20 minutes of stimulation targeting the prefrontal cortex. Despite the theoretical benefits, active stimulation did not alter physiological measures. Oxygen consumption, heart rate, and blood lactate remained unchanged. The comprehensive null result suggests tDCS did not affect endurance under the tested conditions. Read more culture coverage.
The researchers also included a no-stimulation group of 40 participants. This supported the same conclusion. The study's size and design strengthen the findings. However, it only tested one session in trained men. More research is needed to explore other variables, like repeated use or different populations. Related: Chicago Marathon Could See New American Marathon Records.
This original Runner World brief is based on reporting from Marathon Handbook. Visit the source for its complete reporting, context and any later corrections.