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首页> 外文期刊>Acta astronautica >Effectiveness of centrifuge-induced artificial gravity with ergometric exercise as a countermeasure during simulated microgravity exposure in humans
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Effectiveness of centrifuge-induced artificial gravity with ergometric exercise as a countermeasure during simulated microgravity exposure in humans

机译：在人体模拟微重力暴露过程中，以测功运动作为离心对策的人工重力的有效性

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摘要

To test the effectiveness of centrifuge-induced artificial gravity with ergometric exercise, 12 healthy young men (20.7 ± 1.9 yr) were exposed to simulated microgravity for 14 days of -6° head-down bedrest. Half the subjects were randomly selected and loaded 1.2 G artificial gravity with 60 W (four out of six subjects) or 40 W (two out of six subjects) of ergometric workload on days 1, 2, 3, 5, 7, 9, 11, 12, 13, 14 (CM group). The rest of the subjects served as the control. Anti-G score, defined as the G-load x running time to the endpoint, was significantly elongated by the load of the centrifuge-ergometer. Plasma volume loss was suppressed (-5.0 ± 2.4 vs. -16.4 ± 1.9%), and fluid volume shift was prevented by the countermeasure load. Elevated heart rate and muscle sympathetic nerve activity after bedrest were counteracted, and exaggerated response to head-up tilt was also suppressed. Centrifuge-induced artificial gravity with exercise is effective in preventing cardiovascular deconditioning due to microgravity exposure, however, an effective and appropriate regimen (magnitude of G-load and exercise workload) should be determined in future studies.
机译：为了通过测功运动测试离心机诱导的人工重力的有效性，将12名健康的年轻人（20.7±1.9岁）暴露于模拟微重力下，头朝下-6°卧床14天。随机选择一半的受试者，并在第1、2、3、5、7、9、11天向其施加1.2 G的人工重力，其中60 W（六个受试者中的四个）或40 W（六个受试者中的两个）的测功负荷，12、13、14（CM组）。其余受试者作为对照。抗G评分（定义为G负荷x到达终点的运行时间）因离心力计的负荷而显着延长。血浆体积损失得到了抑制（-5.0±2.4对-16.4±1.9％），并且通过对策负荷防止了流体体积偏移。抵消了卧床休息后心率升高和肌肉交感神经活动增加的现象，并且还抑制了对抬头倾斜的过度反应。离心运动引起的人工重力可有效防止因微重力而引起的心血管疾病，但是，在未来的研究中应确定有效且适当的治疗方案（G负荷的大小和运动量）。

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  • 来源
    《Acta astronautica》 |2004年第8期|p.75-80|共6页
  • 作者

    Satoshi Iwase;

  • 作者单位

    Aichi Medical University, Nagakute, Aichi 480-1195, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航天（宇宙航行）;
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