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Effects of Inflight Treadmill Exercise on Postflight Sensorimotor and Functional Performance (Treadmill_DM_Study)
Principal Investigator
Research Area:
Behavior and performance
Species Studied
Scientific Name: Homo sapiens Species: Human

Inflight treadmill exercise can serve as a sensorimotor countermeasure on the International Space Station (ISS) by providing sensory input to the central nervous system (CNS) similar to that required for the control of terrestrial locomotion. However, planners for future deep space exploration missions are currently considering the possibility of not including a treadmill for crewmember exercise. Therefore, the primary goal of this retrospective data mining study was to investigate the effects of dosage variation in inflight treadmill exercise on postflight sensorimotor and functional performance with the intent to assess whether more treadmill use contributes to improved postflight performance. As a secondary goal, types of exercises and loading histories on the Interim and Advanced Resistive Exercise Device (iRED and ARED respectively) were also investigated to determine the potential role of postural challenge related to exercise type (squats and heel raises) and inflight body loading on postflight performance. Using previously collected data from long-duration space flight, the Somers’ D statistic was used to quantify the association between parameters from the inflight treadmill as well as the i/ARED with postflight sensorimotor and functional performance metrics.

This study had the following specific aims:

  1. Gather sensorimotor and functional performance data previously collected after long-duration space flight.
  2. Gather in-flight exercise data collected during long-duration space flight.
  3. Use statistical analyses to determine if a relationship exists between levels/types of inflight exercise and postflight sensorimotor and functional performance taking uncertainty into account.

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Cardiovascular deconditioning
Muscular atrophy
Task performance and analysis

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

Activity board time
Blood volume
Diastolic blood pressure, difference
Diastolic blood pressure, fall recovery prone
Diastolic blood pressure, stand
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Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
Ground 05/01/2009 In Progress

Additional Information
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Institutional Support
National Aeronautics and Space Administration (NASA)
Proposal Date
Proposal Source
Directed Research