NASA艾姆斯研究中心正在研究重力对地球生命的重要性以及间歇地处于重力下是否有可能维护未来航天探险家们的健康。在最近完成的一项实验中,自愿受试者每天24小时以头低位姿势卧床,诱发暴露于空间微重力下可能产生的身体变化。结果表明,受试者仅采用每小时静立15分钟,16小时为一疗程的方法就能避免上述身体变化。在这次历时8个月的实验中,对受试者进行了5次测试,每次6天。研究人员比较了卧床时有无重力活动 NASA’s Ames Research Center is studying the importance of gravity to life on earth and the possibility of sustaining the health of future space explorers intermittently under gravity. In a recently completed experiment, volunteers were placed in bed in a head-low position 24 hours a day, triggering possible physical changes in exposure to spatial microgravity. The results showed that the subjects only use the static 15 minutes per hour, 16 hours for a course of treatment can avoid the above body changes. During the eight-month experiment, subjects were tested five times for six days each. The researchers compared gravity in bed activities