Astronaut's Energy Requirements for Long-Term Space Flight (Energy) - 08.12.15

Overview | Description | Applications | Operations | Results | Publications | Imagery

ISS Science for Everyone

Science Objectives for Everyone
Energy investigation measures an Astronaut's Energy Requirements for Long-Term Space Flight, a crucial factor needed for sending the correct amount of the right types of food with space crews. Nine astronauts will be examined during exercise and rest cycles three months before launch, three months after arriving at space station and adapting to the space environment, and after return to Earth. Physicians will measure metabolic rates, urine content, and bone density to determine energy needs.
Science Results for Everyone
Information Pending

The following content was provided by Stephane Blanc, Ph.D., and is maintained in a database by the ISS Program Science Office.
Information provided courtesy of the Erasmus Experiment Archive.
Experiment Details

OpNom: Energy

Principal Investigator(s)
Stephane Blanc, Ph.D., Institut Pluridisciplinaire Hubert Curien, Strasbourg, France

Alexandre Zahariev, Centre d'Ecologie et de Physiologie Energetiques, Strasbourg, France
M. Caloin, France

Centre d'Ecologie et Physiologie Energetiques, Strasbourg, France

Sponsoring Space Agency
European Space Agency (ESA)

Sponsoring Organization
Information Pending

Research Benefits
Information Pending

ISS Expedition Duration 1
May 2012 - September 2016

Expeditions Assigned

Previous ISS Missions
Information Pending

^ back to top

Experiment Description

Research Overview

  • With the construction of the International Space Station and the related planned long-term human missions beyond low Earth orbit, the interest in nutrition as a countermeasure to the effects of space flight has increased dramatically. A growing body of data suggests a direct relationship between nutrition and the effects of space.

  • The maintenance of energy balance appears critical but difficult during space flight. Clearly the determination of energy requirements is necessary for recommending healthy nutrition in weightlessness.

  • Astronaut's Energy Requirements for Long-Term Space Flight (Energy) measures changes in energy balance after long term spaceflight, adaptations in the components of the total energy expenditure and derive an equation for the energy requirements of astronauts.

Astronaut's Energy Requirements for Long-Term Space Flight (Energy) determines the crewmembers energy requirements for long-term space flight. There is no compensation for severe negative energy balance during space flight.. This energy deficit affects all physiological functions. Energy  measures changes in energy balance after long-term space flight, adaptations in the components of the total energy expenditure, and help to derive an equation for the energy requirements of crewmembers. 

^ back to top


Space Applications
Astronauts often lose body mass with extended stays in space for reasons that remain unclear, although increased exercise as a microgravity countermeasure may be a factor. Knowing details of astronaut metabolism and activity, combined with other conditions, will help ensure that crews are properly nourished on long missions.

Earth Applications
Extended bed rest due to age or illness has some parallels to a proper energy balance. Improved understanding from space missions will help in assessing patient needs on Earth.

^ back to top


Operational Requirements
Information Pending

Operational Protocols
Information Pending

^ back to top

Results/More Information

This is the first mission incorporating Energy operations.

^ back to top

Results Publications

^ back to top

Ground Based Results Publications

^ back to top

ISS Patents

^ back to top

Related Publications

    Bergouignan A, Momken I, Schoeller DA, Normand S, Zahariev A, Lescure B, Simon C, Blanc S.  Regulation of energy balance during long-term physical inactivity induced by bed rest with and without exercise training. Journal of Clinical Endocrinology and Metabolism. 2010 March; 95(3): 1045-1053. DOI: 10.1210/jc.2009-1005.

^ back to top

Related Websites

^ back to top


image NASA Image: ISS033E010000 - Japan Aerospace Exploration Agency astronaut Aki Hoshide,Expedition 33 flight engineer,conducts an Oxygen Uptake Measurement (OUM) for the ESA experiment ENERGY in the Columbus laboratory of the International Space Station. A G1s camcorder is visible in the in upper left corner .
+ View Larger Image