This paper presents data available from bed-rest and flight studies on the energy metabolism and thermoregulatory parameters and their changes during long-duration space missions which may influence requirements of astronauts for food and water. It is calculated, on the basis of 3100 kcal and 2.2 l water a day, with 1 h/day moderate exercise, that the requirements for a 2-yr flight would be 2,263,000 kcal and 1606 l water for each astronaut. One daily 5-h-long extravehicular sortie would require an additional 529,250 kcal and 1,095 l of water per year. Changes in the efficiency of work or metabolism would affect these nutritional requirements for long spaceflights. Factors that would increase food and water requirements are discussed.
Energy and thermal regulation during bed rest and spaceflight
1989-08-01
Miscellaneous
No indication
English
Regulation of Blood Volume During Spaceflight
NTRS | 1997
|Regulation of Blood Volume During Spaceflight
NTIS | 1997
|Changes in Electrically Evoked Skeletal Muscle Contractions during 17-day Spaceflight and Bed Rest
British Library Conference Proceedings | 1997
|Bed-rest studies in the spaceflight era (1986 - 2005) : a review
TIBKAT | 2007
|Fluid and electrolyte regulation in spaceflight
TIBKAT | 1998
|