奇特骑自行车期间的节奏调节会影响对努力的感知,但不会影响神经肌肉变化
Adrien Mater1, Adrien Boly, Alain Martin
1Faculty of Sciences, INSERM UMR1093-CAPS, Université Bourgogne, Dijon, FRANCE.
Medicine and science in sports and exercise
|January 5, 2024
概括
与60rpm相比,以30rpm的异常自行车增加了氧气消耗,肌肉活动和感知力的努力. 这两种节奏都导致类似的力量损失,而没有神经损伤,这表明肌肉特异性的改变.
科学领域:
- 运动生理学 运动生理学
- 体育科学 运动科学 运动科学
- 康复医学 康复医学 康复医学
背景情况:
- 奇特自行车是一种运动方式,涉及肌肉延长.
- 节奏在短时间的异常循环过程中显著影响生理和感知反应.
- 了解长时间运动期间的这些影响对于优化训练和康复至关重要.
研究的目的:
- 为了研究不同节奏 (30比60rpm) 在长时间异常循环过程中对生理和神经肌肉反应的影响.
- 为了检查运动诱导的神经肌肉变化后异常骑自行车在不同的节奏.
- 为了比较不同节奏的疗效,用于康复目的.
主要方法:
- 22名参与者以30rpm和60rpm的速度进行了30分钟的异常自行车运动,其最大同心功率输出率为60%.
- 测量包括氧气消耗 (V·O 2),横向巨和大腿直肠的电肌图 (EMG),以及对努力的感知 (PE).
- 在运动前后评估神经肌肉功能,包括最大自愿收缩扭矩和唤起扭矩.
主要成果:
- 氧气消耗 (V ̇O 2),EMG活动和精力感知 (PE) 在每分钟30转时明显高于每分钟60转时 (P <0.05).
- 最大自发收缩扭矩和唤起的扭矩在两种节奏中同样下降,在30到60rpm之间没有显著差异.
- 自发激活水平保持不变,这表明没有显著的神经疲劳.
结论:
- 长时间以30rpm的异常自行车运行比60rpm,在相同的相对输出功率下,对心脏呼吸和肌肉的需求更大.
- 运动引起的疲劳和神经变化在两种节奏之间是可比的,这表明古怪的骑自行车主要影响肌肉功能.
- 与30rpm相比,以60rpm的奇特自行车可能更适合康复,因为感知到的努力较低,力量损失相似.
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