Physical Activity Neuroscience Laboratory, Salgado de Oliveira University (UNIVERSO), Niterói, Rio de Janerio, Brazil.
Laboratory of Panic and Respiration (LABPR), Institute of Psychiatry (IPUB), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.
J Strength Cond Res. 2020 Jan;34(1):89-96. doi: 10.1519/JSC.0000000000002434.
Lattari, E, Rosa Filho, BJ, Fonseca Junior, SJ, Murillo-Rodriguez, E, Rocha, N, Machado, S, and Maranhão Neto, GA. Effects on volume load and ratings of perceived exertion in individuals' advanced weight training after transcranial direct current stimulation. J Strength Cond Res 34(1): 89-96, 2020-The aim of this study was investigate the effects of transcranial direct current stimulation (tDCS) on volume load and ratings of perceived exertion. Fifteen young healthy individuals, aged between 20 and 30 years in advanced strength training were recruited. Test and retest of the 10 maximum repetitions (10RM) were performed to determine the reliability of load used. Subjects performed 3 experimental conditions in a randomized, double-blinded crossover design: anodic stimulation (a-tDCS), cathodic stimulation (c-tDCS), and sham (2 mA for 20 minutes targeting the dorsolateral prefrontal cortex left). Immediately after the experimental conditions, subjects completed 1 set of maximum repetitions with 10RM load (volume load) and answered to OMNI-RES (poststimulation) (level of significance p ≤ 0.05). The volume load showed main effect for condition (F(2, 28) = 164.801; p < 0.001). In poststimulation, a-tDCS was greater than c-tDCS (p ≤ 0.001) and sham (p ≤ 0.001). For ratings of perceived exertion (OMNI-RES), the results showed main effect for condition (F(2, 28) = 9.768; p ≤ 0.05). In poststimulation, c-tDCS was greater than a-tDCS (p ≤ 0.05) and sham (p ≤ 0.05). We conclude that the use of a-tDCS may promote increase in volume load for the LP45 exercise. Moreover, higher volume loads are necessary to maximize muscle strength and anabolism.
拉塔里、E、罗莎·菲尔霍、BJ、丰塞卡·朱尼尔、SJ、穆里略-罗德里格斯、E、罗恰、N、马查多、S 和马兰豪·内托、GA。经颅直流电刺激对个体高级举重训练后容量负荷和感知用力的影响。J 力量与调节研究 34（1）：89-96，2020-本研究旨在探讨经颅直流电刺激（tDCS）对容量负荷和感知用力的影响。招募了 15 名年龄在 20 至 30 岁之间、处于高级力量训练阶段的年轻健康个体。进行了 10 次最大重复测试（10RM）的测试和再测试，以确定使用的负荷的可靠性。受试者以随机、双盲交叉设计进行了 3 种实验条件：阳极刺激（a-tDCS）、阴极刺激（c-tDCS）和假刺激（2 mA 持续 20 分钟，靶向左侧背外侧前额叶）。在实验条件后，受试者立即用 10RM 负荷（容量负荷）完成 1 组最大重复，并回答 OMNI-RES（poststimulation）（显著性水平 p ≤ 0.05）。容量负荷显示条件的主要影响（F（2,28）=164.801；p<0.001）。在 poststimulation 中，a-tDCS 大于 c-tDCS（p≤0.001）和 sham（p≤0.001）。对于感知用力评分（OMNI-RES），结果显示条件的主要影响（F（2,28）=9.768；p≤0.05）。在 poststimulation 中，c-tDCS 大于 a-tDCS（p≤0.05）和 sham（p≤0.05）。我们得出结论，使用 a-tDCS 可能会增加 LP45 运动的容量负荷。此外，需要更高的容量负荷来最大化肌肉力量和合成代谢。
