Task Physiological Factors Contributing to Postflight Changes in Functional Performance (Bloomberg) (Completed)
Last Published:  07/30/20 02:45:15 PM (Central)
Short Title: Functional Task Test (FTT)
Responsible HRP Element: Human Health Countermeasures
Collaborating Org(s):
Research Operations and Integration (ROI)
Funding Status: Completed - Task completed and produced a deliverable
Procurement Mechanism(s):


Exposure to the microgravity conditions of spaceflight causes astronauts to experience alterations in multiple physiological systems. These physiological changes include sensorimotor disturbances, cardiovascular deconditioning, and loss of muscle mass and strength. These changes might affect the ability of crewmembers to perform critical mission tasks immediately after landing on a planetary surface. To date, changes in functional performance have not been systematically studied or correlated with physiological changes. To understand how changes in physiological function affect functional performance, an interdisciplinary pre- and postflight testing regimen (Functional Task Test [FTT]) has been developed that systematically evaluates both astronaut postflight functional performance and related physiological changes. The overall objective of the FTT is to identify the key underlying physiological factors that contribute to performance of functional tests that are representative of critical mission tasks.  Flight, bed rest, and factors of influence ground analogs (e.g weight suit, muscle strength; galvonic stimulation, sensorimotor control) will be used to address specific aims.

Specific Aims

1) Determine the effects of short and long-duration spaceflight on functional performance.

2) Compare the rate of recovery in functional performance between short and long-duration spaceflight.

3) Determine how postflight changes in sensorimotor, cardiovascular and muscle physiology impact functional performance.