力量训练强度对来自大脑的神经营养因子的影响
Marcos Borges Junior1, Larissa Ferreira Jacomini Tavares1, Gabriela Yumi Nagata2
1Neurosciense, UFMG, Belo Horizonte, Brazil.
International journal of sports medicine
|October 23, 2023
概括
高强度力量训练 (80% 1RM) 在运动后一小时显著提高脑衍生神经营养因子 (BDNF) 水平. 较低强度 (60% 1RM) 的力量训练会增加乳酸,但不会增加BDNF.
科学领域:
- 运动生理学 运动生理学
- 神经科学是一个神经科学.
- 生物化学 生化学
背景情况:
- 大脑衍生神经营养因子 (BDNF) 在神经元可塑性,学习和记忆中起着至关重要的作用.
- 运动是BDNF水平的已知调节器,但不同强度力量训练的具体影响需要进一步阐明.
研究的目的:
- 研究不同强力训练强度对受过训练的男性血BDNF水平的急性影响.
- 为了比较生理反应,包括乳酸和BDNF的变化,在一次重复最大 (1RM) 力量训练中,60%到80%之间.
主要方法:
- 使用随机交叉设计,对14名训练有素的男性参与者进行了测试.
- 参与者完成了力量训练方案 (长椅压力,腿压力,拉拉下) 在60%和80%的1RM到失败,与2分钟的休息间隔.
- 血液样本是在运动前,运动后立即和运动后一个小时收集的.
主要成果:
- 60%的力量训练1RM显著增加了血乳酸,但没有改变血BDNF水平.
- 80%的力量训练1RM显著增加了血乳酸和血BDNF水平在运动后一个小时 (461到1730 pg/ml,p=0.035).
结论:
- 一次高强度力量训练 (80% 1RM) 有效提高循环BDNF水平.
- 强度似乎是阻力训练期间调节运动诱导的BDNF反应的关键因素.
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