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Evaluation of Functional Skeletal Muscle Performance Following Space Flight (DSO 617)
Principal Investigator
Research Area:
Muscle physiology
Species Studied
Scientific Name: Homo sapiens Species: Human

Muscular deconditioning after long exposure to microgravity could interfere with the safe completion of critical tasks during space flight or during emergency or routine landing or egress. The objective of this study was to evaluate changes in the strength of the arm muscles after space flight and to determine whether extravehicular activity during flight affects those changes.

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Greenisen MC, Hayes JC, Siconolfi SF, Moore AD. Functional performance evaluation. In: Sawin CF, Taylor GR, Smith WL, editors. Extended Duration Orbiter Medical Project final report 1989-1995. Houston: NASA Johnson Space Center, 1999.

Extravehicular activity
Muscle contraction
Muscle fatigue
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Data Information
Data Availability
Archive is complete. Data sets are not publicly available but can be requested.
Data Sets+ Request data

Elbow strength
Resultant force
Wrist pronation strength
Wrist supination

Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
STS-49 05/07/1992 05/16/1992 9 days
STS-50 06/25/1992 07/09/1992 14 days
STS-52 10/22/1992 11/01/1992 10 days
STS-55 04/26/1993 05/06/1993 10 days
STS-56 04/08/1993 04/17/1993 9 days

Additional Information
Other Key People
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Johnson Space Center LSDA Office
Project Manager: Pamela A. Bieri
Institutional Support
National Aeronautics and Space Administration (NASA)