运动期间前额叶皮层和肌肉氧化的性别差异,直到耐力训练的个体疲
Daniel Ramos-López1, Raúl Caulier-Cisterna2, Benjamín Díaz-Ortiz1
1Laboratory of Exercise Physiology, Department of Kinesiology, School of Health Sciences, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
由于生理上的差异,生物性别会影响运动表现. 这项研究揭示了运动期间男性和女性之间明显的氧化模式,这表明性别特异性的限制.
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.
- 运动科学 运动科学 运动科学
背景情况:
- 生物性别显著影响运动表现.
- 大脑和肌肉生理学的差异有助于基于性别的性能变化.
- 了解运动期间的性别特异性血液动力学反应至关重要.
研究的目的:
- 在增量运动期间调查血液动力学反应和肌肉氧化模式的性别差异.
- 检查前额叶皮层 (PFC),肋间肌肉和巨大的横向肌肉中的氧化变化.
- 为了确定性别特异性炼反应背后的不同的生理机制.
主要方法:
- 近红外光谱学 (NIRS) 用于测量氧血红蛋白 (O2-Hb),脱氧血红蛋白 (H-Hb) 和组织和指数 (TSI) 的变化.
- 从74名耐力训练的个体中收集了数据,这些个体在增量运动期间进行了耐力训练.
- 采用双向ANOVA分析性别和强度效应,并报告了效应大小.
主要成果:
- 在PFC和肋间肌肉中发现了O2-Hb,在大侧肌和PFC中发现了H-Hb,性别和强度之间的显著相互作用.
- 男人显示,大脑的氧气供应更大,外围脱氧增加.
- 女性在呼吸肌肉中表现出更大的氧气提取,表明明显的氧化模式.
结论:
- 性别特定的生理机制有助于运动期间的不同反应.
- 在运动期间,男性的外围因素可能会更有限制.
- 中枢限制,可能涉及大脑血管收缩,可能在女性中发挥更重要的作用.
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