Impact of Transcranial Direct Current Stimulation on the Capacity to Perform Burpees: A Randomized Controlled Trial

Abstract

Transcranial direct current stimulation (tDCS) has emerged as a potential intervention to improve physical performance. This study investigates the effects of tDCS applied to the primary motor cortex (M1) and dorsolateral prefrontal cortex (DLPFC) on performance in a maximal effort task, specifically the No-Jump Burpee exercise. Twenty healthy male subjects (26.0 ± 4.91 years) completed three experimental conditions (a-DLPFC, a-M1, and SHAM) in a double-blind crossover design. Prior to the performance of burpees to exhaustion, tDCS (2 mA, 20 min) was administered. The total number of repetitions, vastus lateralis muscle oxygen saturation, heart rate, and subjective perception of exertion (RPE) during exercise were measured. Repeated ANOVAs showed a significant effect of condition on the number of repetitions (p < 0.001). Subjects performed more repetitions under the M1 condition (68 ± 19.5) compared to DLPFC (63 ± 17.9) and SHAM (58 ± 18.0), with significant differences between all conditions. This study demonstrates that tDCS can improve performance in a physical endurance task such as the No-Jump Burpee. The findings suggest that tDCS may be a viable ergogenic tool for improving athletic performance. Future research should explore the underlying mechanisms and the practical application of these results in long-term physical training programs (NCT06472882).