Department of Physical Education and Sport, Faculty of Sport Sciences, Catholic University of Murcia (UCAM), Murcia, Spain.
Department of Sports Sciences and Physical Conditioning, Faculty of Education, Universidad Catolica de la Santisima Concepcion, Concepción, Chile.
Eur J Sport Sci. 2022 Feb;22(2):113-125. doi: 10.1080/17461391.2020.1856933. Epub 2021 Jan 7.
Transcranial direct current stimulation (tDCS) has been proven to induce positive effects on athletic performance. The present study aimed to analyse the effect of anodal-tDCS on endurance (time to exhaustion [TTE] or endurance time trial [ETT]) and sprint performance during cycling and running tasks. We performed a systematic literature review in the databases Medline (via PubMed), SPORTDiscus and Science Direct. We included only randomised controlled trials conducted with healthy individuals in which an anodal-tDCS protocol was applied prior to cycling or running tests. The effect of anodal-tDCS (experimental condition) was compared against sham stimulation (control condition). A total of 15 interventions from 13 studies were included. The sub-group analysis revealed a positive effect of anodal-tDCS on TTE (standardised mean differences [SMD] = 0.37; 90% confidence interval [CI] = 0.13, 0.61; = 0.01), but not on ETT (SMD = 0.00; 90% CI = -0.29, 0.30; = 1.00) or sprint performance (SMD = 0.19; 90% CI = -0.23, 0.60; = 0.46). The current meta-analysis suggests that the effect of anodal-tDCS on whole-body dynamic exercises (running and cycling) could be task dependent. Specifically, anodal-tDCS enhance running and cycling time to exhaustion performance during TTE tasks but not ETT or sprint tasks. The increase in cortical excitability induced by anodal-tDCS may lead to lower ratings of perceived exertion by reducing the input required to perform the physical task. Task should be taken into account, because it is probably influencing the result obtained by anodal-tDCS.
经颅直流电刺激（tDCS）已被证明对运动表现有积极影响。本研究旨在分析阳极 tDCS 对自行车和跑步任务中耐力（力竭时间 [TTE] 或耐力计时赛 [ETT]）和短跑表现的影响。我们在 Medline（通过 PubMed）、SPORTDiscus 和 Science Direct 数据库中进行了系统的文献回顾。我们仅纳入了在健康个体中进行的、在自行车或跑步测试前应用阳极 tDCS 方案的随机对照试验。阳极 tDCS 的效果（实验组）与假刺激（对照组）进行比较。共有 13 项研究的 15 项干预措施被纳入。亚组分析显示，阳极 tDCS 对 TTE 有积极影响（标准化均数差 [SMD] = 0.37；90%置信区间 [CI] = 0.13，0.61； = 0.01），但对 ETT（SMD = 0.00；90%CI = -0.29，0.30； = 1.00）或短跑表现（SMD = 0.19；90%CI = -0.23，0.60； = 0.46）没有影响。目前的荟萃分析表明，阳极 tDCS 对全身动力运动（跑步和骑自行车）的影响可能取决于任务。具体来说，阳极 tDCS 可提高 TTE 任务中的跑步和骑自行车力竭时间，但不能提高 ETT 或短跑任务的时间。阳极 tDCS 诱导的皮质兴奋性增加可能通过降低执行身体任务所需的输入来降低感知的努力程度，从而提高跑步和骑自行车的力竭时间。应该考虑任务，因为它可能会影响阳极 tDCS 获得的结果。
