在基于速度和斜率的增量运行测试中,比较NIRS衍生的[HHb]断点和与乳酸值的一致性
Thiago Pereira Ventura1, Fernando Klitzke Borszcz2,3,4, Rafael Alves de Aguiar5
1Federal University of Santa Catarina, Sports Center, Florianopolis, SC, Brazil; thiagopereiraventura@gmail.com.
概括
在斜坡上跑步对肌肉脱氧和生理值的影响不同于基于速度的测试. 脱氧血红蛋白破裂点 (HHb-BP) 和乳酸值 (LT) 根据测试方法而异,这突显了边缘反应中斜率的重要性.
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
- 肌肉生理学 肌肉生理学
背景情况:
- 以前的研究已经探索了平面与斜坡跑步的生理反应.
- 斜坡对肌肉脱氧的特定影响及其与生理值的关系仍然未被充分研究.
- 了解这些关系对于在各种运行条件下优化训练和表现至关重要.
研究的目的:
- 为了比较基于斜率和基于速度的增量运行测试之间的脱氧血红蛋白破裂点 (HHb-BP).
- 评估两个测试方案中HHb-BP和第二个乳酸值 (LT2) 之间的一致性.
- 调查测试方法对外围生理值的影响.
主要方法:
- 15名休步道跑者接受了两个增量跑步测试:基于速度 (固定1%的坡度) 和基于斜率 (固定速度,增加坡度).
- 测量了心肺呼吸变量,血液乳酸和胃肌肌肉脱氧 (使用近红外光谱).
- 分析的重点是确定HHb-BP,第一个乳酸值 (LT1) 和第二个乳酸值 (LT2) 以及它们与V̇O2max的关系.
主要成果:
- 与基于速度的测试相比,基于斜率的测试导致HHb-BP,LT1和LT2的%V̇O2max值更高.
- 在基于速度的测试中,HHb-BP的强度低于LT2的强度,一致性差.
- 在基于斜率的测试中,没有观察到HHb-BP和LT2之间的显著差异,这表明更好的协议.
结论:
- 肌肉脱氧值 (HHb-BP) 发生在较高的相对强度 (%V̇O2max) 时,基于斜坡的运行.
- HHb-BP和LT2之间的协议依赖于方法,在基于斜率的协议中一致性更好.
- 这些发现强调了倾斜对外围生理反应的重大影响,以及测试方法在确定运动值方面的关键作用.
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