Fatigue Clinical Trial
Official title:
Experimental Trial of Fatigue Countermeasure Program in Operational Flight Controllers
NCT number | NCT01744678 |
Other study ID # | NNX10AF47G |
Secondary ID | |
Status | Completed |
Phase | N/A |
First received | |
Last updated | |
Start date | September 2012 |
Est. completion date | November 2012 |
Verified date | January 2019 |
Source | Brigham and Women's Hospital |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
The purpose of this study is to validate the acceptability, operational feasibility and
efficacy of a combined fatigue countermeasure comprised of shorter-wavelength light and
exercise during operational Orbit 1 night shifts to improve alertness and performance of
flight mission controllers.
Specifically, the investigators will:
1. Feasibility. Test the feasibility of developing a break room containing fatigue
countermeasures (shorter-wavelength light and exercise equipment) to be used by flight
mission controllers during Orbit 1 night shifts, and the feasibility to schedule regular
breaks during the Orbit 1 shift so that flight mission controllers have the opportunity
to use the fatigue countermeasures break room.
2. Acceptability. Test the acceptability of the use of the fatigue countermeasures break
room evaluating when and how the room is used by flight mission controllers, as measured
on End-of-Shift Productivity Questionnaire.
3. Test the hypothesis that alertness and performance will be impaired in flight mission
controllers during Orbit 1 operational night shifts as compared to flight mission
controllers working a non-console day shift.
4. Test the hypothesis that alertness and performance of flight mission controllers who
exercise and are exposed to shorter wavelength light during the Orbit 1 night shift will
be significantly more alert and have better mood, performance (e.g., less Psychomotor
Vigilance Task (PVT) lapses, increased productivity) than those same mission controllers
working Orbit 1 night shifts without exposure to the shorter wavelength light and
exercise.
5. Test the acceptability, operational feasibility and efficacy of implementing an
anonymous sleep disorders screening for flight controllers, evaluated by number of
visitors to the screening web site and the number of completed assessments.
Status | Completed |
Enrollment | 20 |
Est. completion date | November 2012 |
Est. primary completion date | November 2012 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: - Must be current Johnson Space Center International Space Station Flight Controller or Flight Director cleared to sit console for Orbit 1 work shift - Work schedule must meet both study needs and National Aeronautics and Space Administration (NASA) scheduling operational constraints Exclusion Criteria: |
Country | Name | City | State |
---|---|---|---|
United States | Johnson Space Center | Houston | Texas |
Lead Sponsor | Collaborator |
---|---|
Brigham and Women's Hospital | National Aeronautics and Space Administration (NASA) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Alertness/Fatigue as measured by Psychomotor Vigilance Task and Visual Analog Scales | Average slowest 10% reaction times by condition (day shift, overnight control, overnight intervention), across time within shifts (pre-shift, first half, second half, post-shift), and across consecutive shifts (shifts 1, 2, 3, 4, 5) | Three weeks. | |
Secondary | Sleep duration as measured by wrist actigraphy | Average hours of sleep per 24hr day by condition (day shift, overnight control, overnight intervention) | Three weeks. | |
Secondary | Sleep duration as captured in sleep/work logs | Average hours of sleep per 24hr day by condition (day shift, overnight control, overnight intervention) | Three weeks. |
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