tDCS over oPFC on endurance performance in swimmers mentally fatigued
Objective: The objective was to analyze the effect of anodal transcranial direct current stimulation (a-tDCS) over the orbital prefrontal cortex (oPFC) on endurance performance of mentally fatigued female amateur swimmer. Methods: Nineteen female amateur swimmers participated in this study. In two experimental visits, the swimmers completed the 3-min all-out tethered swimming after performing a 30-min Stroop test with a-tDCS or placebo (Sham) stimulation over the left-oPFC. The brain stimulation conditions (i.e., a-tDCS and Sham) were performed in a double-blinded and counterbalanced order. Results: It was found lower critical force, mean force, force minimum, fatigue index, and aerobic impulse for Sham than a-tDCS (p<0.05). There was no main effect of condition for peak force (p> 0.05). Conclusion: We concluded that a-tDCS applied over the left-oPFC in female amateur swimmers mentally fatigued maintained endurance performance. From a practical point of view, the use of a-tDCS should be considered to counteract harmful cognitive effects and maintain endurance performance during competitive race events.