Biometrics Laboratory, School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Postgraduate in Physical Education, School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
PLoS One. 2018 Mar 14;13(3):e0194264. doi: 10.1371/journal.pone.0194264. eCollection 2018.
Ethanol (ET) is a substance that modulates the Central Nervous System (CNS). Frequently, ET intake occurs combined with energy drinks, which contain taurine (TA), an important amino acid found in the body (i.e brain and muscles). Although TA administration has been used in the improvement of physical performance, the impact of TA, ET and exercise remains unknown. This study aimed to analyze the acute effect of 6g of Taurine (TA), 0.6 mL∙kg-1 of Ethanol (ET), and Taurine combined with Ethanol (TA+ET) ingestion on the electrocortical activity before and after a moderate intensity exercise in 9 subjects, 5 women (counterbalanced experimental design). In each of the 4 treatments (Placebo-PL, TA, ET and TA+ET), electroencephalography (EEG) tests were conducted in order to analyze changes in absolute beta power (ABP) in the frontal lobe in 3 moments: baseline (before ingestion), peak (before exercise) and post-exercise. In the PL treatment, the frontal areas showed decrease in ABP after exercise. However, in the ET+TA treatment, ABP values were greater after exercise, except for Fp1. The ET treatment had no effect on the Superior Frontal Gyrus area (F3, Fz and F4) and ABP decreased after exercise in Fp1 and Fp2. In the TA treatment, ABP increased after exercise, while it decreased at the peak moment in most of the frontal regions, except for Fp1, F3 and Fz. We concluded that after a moderate intensity exercise, a decrease in cortical activity occurs in placebo treatment. Moreover, we found a inhibitory effect of TA on cortical activity before exercise and a increased in cortical activity after exercise. A small ET dose is not enough to alter ABP in all regions of the frontal cortex and, in combination with TA, it showed an increase in the frontal cortex activity at the post-exercise moment.
乙醇（ET）是一种调节中枢神经系统（CNS）的物质。通常，ET 的摄入与能量饮料一起发生，能量饮料含有牛磺酸（TA），这是一种在体内（即大脑和肌肉）发现的重要氨基酸。尽管 TA 已被用于改善身体表现，但 TA、ET 和运动的影响仍不清楚。本研究旨在分析 6 克牛磺酸（TA）、0.6 毫升/千克-1 乙醇（ET）和 TA 与乙醇（TA+ET）摄入对 9 名受试者中等强度运动前后皮质电活动的急性影响，5 名女性（平衡实验设计）。在每个 4 种治疗（安慰剂-PL、TA、ET 和 TA+ET）中，进行脑电图（EEG）测试，以分析额区绝对β功率（ABP）的变化，共 3 个时间点：基线（摄入前）、峰值（运动前）和运动后。在 PL 治疗中，额区在运动后 ABP 下降。然而，在 ET+TA 治疗中，除 Fp1 外，运动后 ABP 值更高。ET 治疗对额上回（F3、Fz 和 F4）没有影响，运动后 ABP 下降，除 Fp1 和 Fp2 外。在 TA 治疗中，运动后 ABP 增加，而在大部分额区除 Fp1、F3 和 Fz 外，运动峰值时 ABP 下降。我们得出结论，中等强度运动后，安慰剂治疗的皮质活动下降。此外，我们发现 TA 对运动前皮质活动有抑制作用，运动后皮质活动增加。小剂量 ET 不足以改变额皮质的 ABP，与 TA 结合后，在运动后时刻额皮质活动增加。
