对低体积冲刺间隔练习的生理和代谢反应:冲刺时间和重复的影响
Takaki Yamagishi, Soya Iwata1, Shun Otsuka2
1Division of Vehicle Development, Mazda Motor Corporation, Hiroshima, JAPAN.
Medicine and science in sports and exercise
|March 7, 2024
概括
与较少,较长的冲刺 (SIE20) 相比,更多的重复 (SIE10) 的冲刺间歇运动 (SIE) 显示出的生理反应. SIE20导致了更大的外周氧气提取,表明肌肉适应的潜在更有效的刺激.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 代谢反应 代谢反应
背景情况:
- 冲刺间隔练习 (SIE) 是一种节省时间的训练方法.
- 了解不同SIE协议之间的生理和代谢差异对于优化训练至关重要.
- 之前的研究还没有完全阐明不同冲刺时间和恢复时间对总工作的比较影响.
研究的目的:
- 为了比较两个不同的SIE协议的生理和代谢反应.
- 调查冲刺重复对冲刺时间对氧气吸收和肌肉氧化的影响.
- 通过使用磁共振成像 (MRI) 以不同的SIE协议来评估大腿肌肉激活.
主要方法:
- 14名健康的男性完成了两个SIE协议:四个10秒冲刺与80秒恢复 (SIE10) 和两个20秒冲刺与160秒恢复 (SIE20).
- 测量了肺氧消耗量 (V·O 2) 和巨侧骨和大腿直骨组织的组织氧化指数 (∆TOI).
- T2加权的MRI评估了运动前和运动后八个大腿肌肉的激活水平.
主要成果:
- 氧气吸收 (V·O 2) 和肌肉氧化 (∆TOI) 在第二次冲刺后在SIE10中平稳.
- 与SIE10相比,SIE20的会话平均∆TOI显著更高,无论是横向巨还是大腿直肠.
- 两种SIE协议都增加了所有测量的大腿肌肉中的T2值,表明条件之间的肌肉激活幅度相似.
结论:
- 在SIE10中,越来越多的冲刺重复导致全身和外周氧化反应变.
- SIE20协议引起了更大的外围氧气提取,表明潜在的优越刺激.
- 尽管氧气动力学有差异,但两种SIE协议之间的大腿肌肉激活是可比的.
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