Gap ExAtm4: We do not know how mild hypobaric hypoxia in combination with other spaceflight environmental factors will impact sleep.
Last Published:  07/29/22 01:33:20 PM (Central)
Responsible Element: Human Health Countermeasures (HHC)
Status: Closed
Closure Rationale
While Exploration Atmosphere research and operational development is of high importance, much of this work is now funded by organizations other than HRP, in a collaborative joint effort with HRP as a stakeholder. Details of the work that is already being done (or planned to be done) may be found in the comprehensive NASA technical paper “Integrated Extravehicular Activity Human Research and Testing Plan” (NASA/TP-2019-220232). The impact of using the exploration atmosphere (8.2 psi/34% O2) on various physiological systems has been previously evaluated and summarized in an evidence report. No physiological concerns have been identified, however, the effects of such as atmosphere on the development of SANS is unknown. As part of HRP’s new strategy, that question will be addressed in a future study that will combine head-down tilt bedrest with exposure to the exploration atmosphere. This planned study is captured in the SANS science strategy, and the former gap ExAtm1 has been merged into the new gap SANS-201.
Closure Documentation:
No Closure Documentation Available
Description

This is of considerable importance because of the well-known association of human performance with sleep quality and adequacy. Literature supports the concept that spaceflight, hypoxia with and without AMS and elevated carbon dioxide levels adversely affects sleep quality. The advised course would be f to include measures of sleep, fatigue, and cognitive functioning in available studies evaluating hypoxic stress associated with the Exploration Atmosphere.

Target for Closure
Sufficient data to demonstrate that the risk to sleep duration and quality does not require monitoring during flight or inflight guidelines for surveillance of sleep parameters during periods of hypoxia.
Mappings
Risk Risk of Reduced Crew Health and Performance Due to Hypoxia [inactive]
You are here! Gap ExAtm4: We do not know how mild hypobaric hypoxia in combination with other spaceflight environmental factors will impact sleep.
Completed

Multi-Disciplinary Research Plans

Documentation:
No Documentation Available