Last Published:  07/31/19 10:05:30 AM (Central)
Responsible Element: Human Factors and Behavioral Performance (HFBP)
Status: Open

a)    Initial State

Recent objective findings confirms anecdotal evidence, that sleep loss and circadian misalignment occur on orbit. There is a need to systematically assess causal factors, so that recommendations can be provided to mission planners, habitat designers, and trainers for exploration missions.

b)    Target for Closure

(1) Identified set of  key environmental and mission contributors to sleep and circadian rhythms, specific to spaceflight; and (2) characterization and quantification (if possible) of each contributor’s level of impact.

Standard for  environmental and mission factors that maintains sleep quantity and quality within an acceptable range.

c)    Metrics for Interim Progress

(1) Review status of what is known regarding environmental and mission contributors to sleep duration and sleep structure, from spaceflight and ground studies (10%);
(2) Implement BHP-Dashboard Study (Bmed2) starting FY 15 to aggregate various data sources and conduct contextual assessment of spaceflight (30%);
(3) Develop report that identifies the relationship between various environmental and mission factors and outcomes of interest (e.g., sleep duration, sleep content, circadian misalignment); determine which of these factors is expected for exploration missions (10%);
(4) Quantify the level of impact of each contributor; quantify the acceptable range (10%);
(5) Provide specific mitigation strategies to mission planners and habitat designers, to protect sleep over autonomous, long duration and/or distance exploration missions (20%);
(6) Update as needed upon completion of research studies and as information about mission scenarios is further defined) (10%);
(7) Update standards, flight rules, requirements, and clinical guidelines, as appropriate (10%).

d)    Approach

Since this gap seeks to identify the relative contribution of mission and environmental factors to sleep loss during space missions, it requires research be conducted in spaceflight. It is anticipated that the BHP –Dashboard study planned for FY15 should inform this gap, given that certain data sources (e.g., CO2) levels can be collected.

Target for Closure
No Target for Closure available.
Risk Risk of Performance Decrements and Adverse Health Outcomes Resulting from Sleep Loss, Circadian Desynchronization, and Work Overload
You are here! Gap Sleep Gap 10: We need to identify the spaceflight environmental and mission factors that contribute to sleep decrements and circadian misalignment, and their acceptable levels of risk.

No Documentation Available