在人造引力下进行划船人体计练习的急性心血管和肌肉反应 - - 一个试点试验
Timo Frett1, Leo Lecheler2, Michael Arz2
1Institute of Aerospace Medicine, German Aerospace Center, Cologne, Germany. Timo.frett@dlr.de.
NPJ microgravity
|May 23, 2024
概括
使用短臂离心机在人造引力下划船是可以很好地容忍的,并且有望防止太空飞行脱水. 它增加了肌肉力量和激活,但与正常重力相比,减少了功率输出.
科学领域:
- 太空医学 太空医学
- 运动生理学 运动生理学
背景情况:
- 长时间的固定和太空飞行导致了显著的心血管和肌肉骨衰竭.
- 通过短臂离心法 (SAC) 结合运动的人工重力 (AG) 是一种潜在的对策.
研究的目的:
- 为了比较在人工引力 (AG) 下划船运动的耐受性,肌肉力量产生,心血管反应和功率输出,与地面 (自然) 引力相比.
主要方法:
- 十二名精英划船员在短臂离心机 (+0.5Gz) 和一个模拟离心负荷的倾斜人体计上以自律的节奏划船,直到疲劳.
- 测量包括划船性能,心率,血压,地面反应力,腿部肌肉激活和血液乳酸.
主要成果:
- 在AG中划船被很好地容忍,没有任何不良事件.
- 条件之间没有发现心率,血压或血液乳酸的显著差异.
- 与自然重力相比,AG划船的输出功率降低了33%,但地面反应力和腿部肌肉激活量显著增加.
结论:
- 在人造引力下划船是太空飞行的一种可行的炼方式,证明了减轻脱节的潜力.
- 需要进一步的研究来优化协议,并了解AG运动对生理系统的长期影响.
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