Liang Zhiqiang, Zhou Junhong, Jiao Fujia, Gin Trenton, Wang Xi, Liu Yu, Lü Jiaojiao
School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China.
Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai 200438, China.
Brain Sci. 2022 Apr 23;12(5):541. doi: 10.3390/brainsci12050541.
Endurance, which is dependent at least partly upon the activation of the brain cortex, is important for performance in rowing. Transcranial direct current stimulation (tDCS) has shown benefits for endurance, but its effects on the endurance performance of elite rowing athletes are unknown, and are examined in this study. Eight elite female rowers completed 5 km of rowing on an ergometer following stimulation of the tDCS and sham over motor cortices. Each session lasted 20 min and the current was set at 2.2 mA. Time, 500 m/split, power, time corresponding to 500 m (TC500) and power corresponding to 500 m (PC500) were recorded continuously throughout the tests. No significant differences in time, 500 m/split and power were observed between baseline, tDCS and sham. Compared to the sham, tDCS induced a percentage reduction in TC500 from baseline to 2500 m and 4000 m, and a percentage increase in PC500 from baseline to 500 m, 1000 m, 1500 m, 2000 m, 2500 m, 4000 m, 4500 m and 5000 m. One-session tDCS did not have significant benefits for rowing endurance performance in elite professional rowers, and had only marginally greater efficacy compared to sham. These findings offer knowledge helpful to the design of future studies exploring the effects of tDCS on the endurance performance of elite rowers.
耐力至少部分依赖于大脑皮层的激活，对划船运动表现很重要。经颅直流电刺激（tDCS）已显示出对耐力有益，但它对精英划船运动员耐力表现的影响尚不清楚，本研究对此进行了探讨。八名精英女子划船运动员在对运动皮层进行tDCS刺激和假刺激后，在测力计上完成了5公里的划船测试。每次测试持续20分钟，电流设定为2.2毫安。在整个测试过程中持续记录时间、每500米分段时间、功率、对应500米的时间（TC500）和对应500米的功率（PC500）。在基线、tDCS和假刺激之间，时间、每500米分段时间和功率未观察到显著差异。与假刺激相比，tDCS使从基线到2500米和4000米的TC500百分比降低，以及从基线到500米、1000米、1500米、2000米、2500米、4000米、4500米和5000米的PC500百分比增加。单次tDCS对精英职业划船运动员的划船耐力表现没有显著益处，与假刺激相比仅具有略微更大的效果。这些发现为未来探索tDCS对精英划船运动员耐力表现影响的研究设计提供了有用的知识。
