Title

Metabolic Energy Required for Flight

Document Type

Article

Publication Date

11-1994

Publisher

Elsevier

Source Publication

Advances in Space Research

Source ISSN

1879-1948

Abstract

This paper reviews data available from U.S. and U.S.S.R. studies on energy metabolism in the microgravity of space flight. Energy utilization and energy availability in space seem to be similar to those on Earth. However, negative nitrogen balances in space in the presence of adequate energy and protein intakes and in-flight exercise, suggest that lean body mass decreases in space. Metabolic studies during simulated (bed rest) and actual microgravity have shown changes in blood glucose, fatty acids, and insulin levels, suggesting that energy metabolism may be altered during flight. Future research should focus on the interactions of lean body mass, diet, and exercise in space and their roles in energy metabolism during space flight.

Comments

Advances in Space Research, Vol. 14, No. 11 (November 1994): 147-155. DOI.

R.J. Gretebeck was affiliated with Johnson Space Center at the time of publication.

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