神经肌肉,心脏代谢和感知反应,以短短的冲刺间隔训练,不同的自行车扭矩
José Riesco-Villar1, Aarón Escribano-Pascual1, Alejandro González-Fernández1
1Department of Physical Education and Sports, Faculty of Physical Activity and Sports Sciences, University of León, León, Spain.
European journal of applied physiology
|May 1, 2025
概括
高扭矩 (HT) 自行车冲刺增强了神经肌肉输出和感知力度,而低扭矩 (LT) 冲刺提高了达到峰值功率和情感价值的时间. 在两种短冲刺间隔训练 (sSIT) 方案中,心脏代谢反应仍然相似.
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
- 生物力学 生物力学
背景情况:
- 短冲刺间隔训练 (sSIT) 协议,冲刺持续时间≤10秒,有效改善有氧和无氧健身.
- 了解骑自行车时扭矩变化的急性心理生理影响 sSIT对于优化训练方案至关重要.
- 有限证据表明,在sSIT中,在非常短的最大力冲刺过程中,不同的扭矩对不同的扭矩的影响是有限的.
研究的目的:
- 为了研究高扭矩 (HT) 与低扭矩 (LT) 在5秒循环sSIT会话期间对神经肌肉性能,心脏代谢反应和感知应变的影响.
- 为了比较HT和LT对机械输出,生理标志物和sSIT期间和之后的主观感觉的急性影响.
- 根据具体的培训目标和个体反应,为定制sSIT协议提供见解.
主要方法:
- 15名身体活跃的人参加了两个随机的sSIT会议 (12x5秒冲刺) 在循环人体表上,一个是HT,一个是LT.
- 评估了机械变量 (功率,节奏,疲劳率),生理标记 (sEMG,VO2,HR,BP,SmO2) 和感知指标 (RPE,情感价值).
- 熟悉和确定HT和LT是在主要会议之前使用分级冲刺测试进行的.
主要成果:
- 高扭矩 (HT) 条件导致明显更高的平均节奏,输出功率,疲劳率和感知力度 (RPE) 评级.
- 低扭矩 (LT) 条件显示,到峰值功率的时间显著更长,表面电肌图 (sEMG) 幅度和情感价值.
- 在sSIT会议期间或之后,在HT和LT协议之间没有观察到心脏代谢参数 (VO2,HR,BP,SmO2) 的显著差异.
结论:
- 在5秒循环sSIT协议中操纵扭矩会对神经肌肉和感知反应产生不同的影响.
- 在高扭矩和低扭矩条件之间,心脏代谢适应没有显著的差异.
- 这些发现支持sSIT协议的有针对性的设计,以调节特定训练结果的神经肌肉和感知负载.
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