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Body Mass Changes in NASA/Mir Astronauts (LSAHNEWSV7_2_1)
Research Area:
Clinical medicine
Metabolism and nutrition
Species Studied
Scientific Name: Homo sapiens Species: Human

International Space Station (ISS) Phase I, more commonly known as Phase I, served as a precursor to the ISS experience. In this program, the existing resources of the US Shuttle orbiters and the Russian Space Station Mir were used to test the challenges facing the international partners in the areas of cooperation, data gathering, and logistics. As part of Phase I, seven NASA astronauts served as Mir crewmembers between March 1995 and June 1998. Physiological data gathered on these NASA astronauts can give insight on the effects of long-term weightlessness on individuals, which in turn is important for future ISS considerations.

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National Aeronautics and Space Administration. Body Mass Changes in Phase I Astronauts. In: Longitudinal Study of Astronaut Health Newsletter. October 1998;7(2):1.


Data Information
Data Availability
Archive is complete. All data sets are on the Web site.
Data Sets + View data.

Body weight

Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
LSAH 01/01/1989 05/31/2010 21 years
Mir 18 03/14/1995 07/07/1995 116 days
NASA 2 03/22/1996 09/26/1996 189 days
NASA 3 09/16/1996 01/22/1997 130 days
NASA 4 01/12/1997 05/24/1997 133 days
NASA 5 05/15/1997 10/06/1997 134 days
NASA 6 09/25/1997 01/31/1998 129 days
NASA 7 01/22/1998 06/12/1998 142 days

Additional Information
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Johnson Space Center LSDA Office
Project Manager: Jessica Keune
Institutional Support
National Aeronautics and Space Administration (NASA)