Alix-Fages Carlos, Romero-Arenas Salvador, Calderón-Nadal Giancarlo, Jerez-Martínez Agustín, Pareja-Blanco Fernando, Colomer-Poveda David, Márquez Gonzalo, Garcia-Ramos Amador
Department of Physical Education, Faculty of Sport Sciences and Physical Education, University of A Coruña, A Coruña, Spain.
Department of Physical Education and Sport, Faculty of Sport Sciences, Catholic University of Murcia (UCAM), Murcia, Spain.
Eur J Sport Sci. 2022 Apr;22(4):569-578. doi: 10.1080/17461391.2021.1883124. Epub 2021 Feb 25.
The role of transcranial direct current stimulation (tDCS) as an ergogenic aid is receiving attention from scientists to optimize sport performance. Most studies have examined the effects of tDCS on endurance performance during continuous tasks, while the effect of tDCS on high-intensity intermittent tasks has been less investigated. Therefore, this study aimed to explore the acute effects of tDCS on sprint performance and ratings of perceived exertion (RPE) during a repeated sprint ability (RSA) task. Twenty-five healthy males (age: 22.0 ± 2.5 years) participated in a randomized crossover study consisting of three experimental sessions (anodal, cathodal or sham tDCS) separated by 1 week. Each session consisted of (I) tDCS protocol (15 min at 2 mA applied over the dorsolateral prefrontal cortex [DLPFC]), (II) warm-up and (III) RSA task (ten 30-m running sprints separated by 30 s). Total time and RPE values were recorded for each sprint. The two-way ANOVA applied on sprint time did not reveal a significant main effect of tDCS condition ( = .200) neither a significant tDCS condition × number of sprint interaction ( = .716). Similarly, no significant differences were observed for the fatigue index ( = .449), RSAmean ( = .200) or RPE after each sprint ( range = .116-.890). The magnitude of the differences between the tDCS conditions ranged from negligible to small (effect sizes ≤ 0.33). These results suggest that the application of tDCS over the DLPFC is not effective to increase sprint performance or reduce RPE during a RSA task.Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that could modulate neuromuscular performance.This study aimed to explore the short-term effects of tDCS on sprint performance and ratings of perceived exertion (RPE) during a repeated sprint ability (RSA) task.The application of either ANODAL or CATHODAL tDCS over the DLPFC for 15 minutes did not affect the sprint time of single repeated sprints or the overall metrics of RSA performance (RSAmean and fatigue index).The application of either ANODAL or CATHODAL tDCS over the DLPFC for 15 minutes did not affect the ratings of perceived exertion measured during the repeated sprints task.
经颅直流电刺激（tDCS）作为一种增强体能的辅助手段，正受到科学家们的关注，以优化运动表现。大多数研究考察了tDCS对持续任务期间耐力表现的影响，而tDCS对高强度间歇任务的影响则较少被研究。因此，本研究旨在探讨tDCS对重复冲刺能力（RSA）任务期间冲刺表现和主观用力感觉（RPE）评分的急性影响。25名健康男性（年龄：22.0±2.5岁）参与了一项随机交叉研究，该研究包括三个实验阶段（阳极、阴极或假tDCS），各阶段间隔1周。每个阶段包括（I）tDCS方案（在背外侧前额叶皮质[DLPFC]施加2 mA电流15分钟），（II）热身，以及（III）RSA任务（十次30米跑步冲刺，每次间隔30秒）。记录每次冲刺的总时间和RPE值。对冲刺时间进行的双向方差分析未显示出tDCS条件的显著主效应（P = 0.200），也未显示出tDCS条件×冲刺次数的显著交互作用（P = 0.716）。同样，在疲劳指数（P = 0.449）、RSA平均值（P = 0.200）或每次冲刺后的RPE方面也未观察到显著差异（P值范围为0.116 - 0.890）。tDCS条件之间的差异幅度从可忽略不计到较小（效应量≤0.33）。这些结果表明，在DLPFC上施加tDCS对提高RSA任务期间的冲刺表现或降低RPE无效。经颅直流电刺激（tDCS）是一种可调节神经肌肉表现的非侵入性脑刺激技术。本研究旨在探讨tDCS对重复冲刺能力（RSA）任务期间冲刺表现和主观用力感觉（RPE）评分的短期影响。在DLPFC上施加阳极或阴极tDCS 15分钟，不影响单次重复冲刺的冲刺时间或RSA表现的总体指标（RSA平均值和疲劳指数）。在DLPFC上施加阳极或阴极tDCS 15分钟，不影响重复冲刺任务期间测得的主观用力感觉评分。
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