不同的背协议对前额叶皮层氧化反应的影响
Luís Leitão1,2,3, Fernando Pareja-Blanco4, Daniel Marinho3,5
1Instituto Politécnico de Setúbal, Escola Superior de Educação, Setúbal, Portugal.
Journal of strength and conditioning research
|May 29, 2025
概括
与6RM和10RM相比,强度更高的背部,特别是3RM负荷,显著增加前额叶皮层 (PFC) 氧化率. 这突出了运动强度如何影响抵抗训练期间的大脑活动.
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.
- 体育科学 运动科学 运动科学
背景情况:
- 前额叶皮质 (PFC) 对于运动任务执行和运动开始/停止至关重要.
- 大脑氧化对阻力运动的反应,对不同负荷的失效的反应仍然不清楚.
研究的目的:
- 为了研究前额叶皮层 (PFC) 氧化反应,在背部坐练习时,在不同的负载条件下的任务失败 (3,6,10次重复最大 - RM).
主要方法:
- 18名男子通过3RM,6RM和10RM负载完成了背协议,以应对任务失败.
- 近红外光谱学 (NIRS) 用于测量PFC氧化,包括氧化血红蛋白 (HbO2),脱氧化血红蛋白 (HHb),总血红蛋白 (tHb) 和组织氧化指数 (TOI).
主要成果:
- 在所有方案中,氧化血红蛋白 (HbO2) 和总血红蛋白 (tHb) 都显著增加 (p < 0.01).
- 与6RM和10RM协议相比,3RM协议导致HbO2和tHb的增加更大 (p <0.05).
- 10RM负载导致最后一次重复减少HHb,并且HbO2和tHb的增加比其他协议小 (p <0.05).
结论:
- 背练习到失败增加PFC氧化,更高的运动强度 (较低的RM负载) 引起更明显的反应.
- 这些发现表明,运动强度会影响抵抗运动期间大脑活动中中心变化的程度.
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