Human Response to Space Flight

摘要: The past five decades have amply demonstrated that humans can tolerate space flight well for long periods in orbiting spacecraft. Historically, the direct causes of mortality been accidents occurring during dynamic phases flight. vast majority time has spent Earth orbit, but both orbit and on lunar surface, ability to maintain adequate health work productively. dominant condition associated with affecting human physiology is weightlessness, which induces predictable changes crewmembers adaptation. Acutely, these induce adverse symptoms such as motion sickness from neurovestibular adaptation facial congestion a rostral fluid shift. Typically do not limit crew activity resolve within few days. Significant clinically asymptomatic early include regulation lower plasma volume concomitant decrease red blood cell mass, cardiac respiratory dynamics, anthropometry. Food intake volitionally reduced weight loss common. Changes skeletal muscle morphology are seen, mass strength postural regions after several Aerobic fitness does inflight performance.