Zanirate Geanny, Pilon Rui, Ramos Antony Araujo, Miranda Humberto, Marquez Gonzalo, Monteiro Walace, Lattari Eduardo
Physical Education Department, Physical Activity Sciences Graduate Program, Salgado de Oliveira University (UNIVERSO), Niterói, Brazil.
School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Exp Brain Res. 2025 May 6;243(6):141. doi: 10.1007/s00221-025-07062-3.
To investigate the effects of anodal tDCS on isometric endurance peformance and sEMG activity of the vastus lateralis in healthy male with experience in resistance training. Fifteen healthy, resistance-trained males aged 18 to 35 participated in three sessions, each separated by one week. The initial session included an maximal isometric voluntary contraction (MIVC) test and familiarization with the fatigue task. In the second and third sessions, conducted randomly, participants underwent either anodal tDCS or placebo tDCS (sham). Immediately after the conditions, the subjects performed the fatigue task for right knee in the horizontal leg-press exercise, consisting of eight, lasting five seconds and having a five-second interval between contractions. The results showed no interaction between conditions and contractions in isometric endurance performance across contractions (p = 0.78) or in the sEMG activity of the vastus lateralis muscle (p = 0.94). The specific anodal tDCS protocol used in this study does not enhance isometric strength endurance or surface electromyographic activity of the vastus lateralis muscle in strength-trained men.
为了研究阳极经颅直流电刺激（tDCS）对有抗阻训练经验的健康男性股外侧肌等长耐力表现和表面肌电图（sEMG）活动的影响。15名年龄在18至35岁之间、有抗阻训练经验的健康男性参加了三个阶段的实验，每个阶段间隔一周。初始阶段包括一次最大等长自主收缩（MIVC）测试以及对疲劳任务的熟悉。在随机进行的第二和第三阶段，参与者分别接受阳极tDCS或安慰剂tDCS（假刺激）。在这些条件结束后，受试者立即在卧式腿举运动中进行右膝的疲劳任务，包括八次持续五秒且每次收缩之间有五秒间隔的动作。结果显示，在各次收缩的等长耐力表现方面（p = 0.78）或股外侧肌的sEMG活动方面（p = 0.94），条件与收缩之间均无交互作用。本研究中使用的特定阳极tDCS方案并不能增强力量训练男性股外侧肌的等长力量耐力或表面肌电活动。
