Mesquita Paulo H C, Franchini Emerson, Romano-Silva Marco A, Lage Guilherme M, Albuquerque Maicon R
Int J Sports Physiol Perform. 2020 Feb 4;15(7):958-963. doi: 10.1123/ijspp.2019-0410. Print 2020 Aug 1.
To investigate the effects of anodal transcranial direct current stimulation (a-tDCS) on the aerobic performance, heart rate (HR), and rating of perceived exertion (RPE) of highly trained taekwondo athletes.
Twelve (8 men and 4 women) international/national-level athletes received a-tDCS or sham treatment over the M1 location in a randomized, single-blind crossover design. The stimulation was delivered at 1.5 mA for 15 min using an extracephalic bihemispheric montage. Athletes performed the progressive-specific taekwondo test 10 min after stimulation. HR was monitored continuously during the test, and RPE was registered at the end of each stage and at test cessation.
There were no significant differences between sham and a-tDCS in time to exhaustion (14.6 and 14.9, respectively, P = .53, effect size = 0.15) and peak kicking frequency (52 and 53.6, respectively, P = .53, effect size = 0.15) or in HR (P > .05) and RPE responses (P > .05).
Extracephalic bihemispheric a-tDCS over M1 did not influence the aerobic performance of taekwondo athletes or their psychophysiological responses, so athletes and staff should be cautious when using it in a direct-to-consumer manner.
探讨阳极经颅直流电刺激（a-tDCS）对高水平跆拳道运动员有氧能力、心率（HR）和主观用力感觉（RPE）的影响。
12名（8名男性和4名女性）国际/国家级运动员采用随机、单盲交叉设计，在M1部位接受a-tDCS或假刺激治疗。使用颅外双侧蒙太奇以1.5 mA的电流刺激15分钟。运动员在刺激后10分钟进行渐进式特定跆拳道测试。测试期间持续监测心率，每个阶段结束时和测试结束时记录主观用力感觉。
假刺激和a-tDCS在力竭时间（分别为14.6和14.9，P = 0.53，效应量 = 0.15）、踢腿峰值频率（分别为52和53.6，P = 0.53，效应量 = 0.15）或心率反应（P > 0.05）和主观用力感觉反应（P > 0.05）方面均无显著差异。
M1部位的颅外双侧a-tDCS不会影响跆拳道运动员的有氧能力或其心理生理反应，因此运动员和工作人员在以直接面向消费者的方式使用时应谨慎。
