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Nutrition and muscle loss in humans during spaceflight (1999)

Stein, T. P.

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Publication Date: 2011-08-24

Description: The protein loss in humans during spaceflight is partly due to a normal adaptive response to a decreased work load on the muscles involved in weight bearing. The process is mediated by changes in prostaglandin release, secondary to the decrease in tension on the affected muscles. On missions, where there is a high level of physical demands on the astronauts, there tends to be an energy deficit, which adds to the muscle protein loss and depletes the body fat reserves. While the adaptive response is a normal part of homeostasis, the additional protein loss from an energy deficit can, in the long run, have a negative effect on health and capability of humans to live and work in space and afterward return to Earth.

Keywords: Life Sciences (General)

Type: Advances in space biology and medicine (ISSN 1569-2574); Volume 7; 49-97

Format: text

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