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Effect of spaceflight on human protein metabolism
American Journal of Physiology-Endocrinology and Metabolism, 1993Nitrogen balance and the whole body protein synthesis rate were measured before, during, and after a 9.5-day spaceflight mission on the space shuttle Columbia. Protein synthesis was measured by the single-pulse [15N]glycine method. Determinations were made 56, 26, and 18 days preflight, on flight days 2 and 8, and on days 0, 6, 14, and 45 postflight ...
M. J. Leskiw +2 more
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Effects of spaceflight on human calf hemodynamics
Journal of Applied Physiology, 2001Chronic microgravity may modify adaptations of the leg circulation to gravitational pressures. We measured resting calf compliance and blood flow with venous occlusion plethysmography, and arterial blood pressure with sphygmomanometry, in seven subjects before, during, and after spaceflight.
Benjamin D. Levine +8 more
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The essential role of human spaceflight
Space Policy, 2013Abstract The question is: should the United States and nations at large pursue a human spaceflight program (and if so, why)? I offer an unwavering positive answer to this question, and state the reasons for it while considering the broad challenges and benefits of (human) spaceflight.
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Behavioral Health Policy for Human Spaceflight
Aerospace Medicine and Human Performance, 2018INTRODUCTION: Government space agencies and commercial spaceflight companies are seeking to expand human space exploration. Spaceflight can place considerable psychological stressors on humans, yet policies to support behavioral health in human spaceflight are still in their nascent stages.
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Hibernation and Torpor: Prospects for Human Spaceflight
2018Despite substantial technical progress in the last decades, long-distance human space travel beyond the Earth-Moon system still represents a challenge. Resources for sustaining humans in good physical and mental health on such journeys are important drivers of complexity and cost.
G. Petit +6 more
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Escaping Earth: Human Spaceflight as Religion
Astropolitics, 2011*UCH attention has been given to the influence of the Cold War in explaining the United States‘ embarkation in the difficult task of exploring space with humans. The commitment to human space exploration, begun at the height of the Cold War and gaining ever greater credence through the race to the Moon along with its slow decline in the last 40 years ...
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The Future of Human Spaceflight in Japan
2002The development of a large rocket plays a significant role in Japan’s policy of space development and utilization. Therefore when the H-II rocket, developed using indigenous technology and launched successfully on its first five flights, failed on the next two consecutive flights the entire space program was seriously impacted.
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‘The ethics of human enhancement for spaceflight'
In this presentation I examine the ethical reasons for and against enhancing human beings for spaceflight. I consider the supposed distinction between treatment and enhancement and argue that this much more difficult to maintain in modifying people for space environments than it is in the terrestrial context, but that ultimately modifications for spaceopenaire +1 more source