Risk Risk of Impaired Performance Due to Reduced Muscle Mass, Strength & Endurance
Short Title: Muscle Last Published:  11/23/20 11:55:09 AM (Central)
Element: Human Health Countermeasures (HHC)
Evidence:  Report
Risk Master Logic Diagram:  Diagram
Point of Contact:  Meghan Downs
HRP Risk Status: Active [current research ongoing]
Risk Ratings and Dispositions per Design Reference Mission (DRM) Category
DRM CategoriesMission
OperationsLong-Term Health
LxCRisk Disposition *LxCRisk Disposition *
Low Earth Orbit6 months1x4Accepted/Optimize3x1Accepted
1 year1x4Accepted/Optimize3x1Accepted
Deep Space Sortie1 month1x4Accepted/Optimize3x1Accepted
Lunar Visit/
1 year1x4Accepted/Optimize3x1Accepted
Deep Space
1 year1x4Accepted/Optimize3x1Accepted
Planetary3 years3x3Requires Mitigation3x2Requires Mitigation
Note: LxC is the likelihood and consequence rating. The information above was last approved by the Human System Risk Board in 8/2015.
Risk Statement
Given that exposure to a microgravity environment causes skeletal muscles to undergo reduced mass, strength, and endurance, there is a possibility that mission task performance would be impaired or tasks could not be performed.
Gaps (9)