Light Exposure + Caloric Restriction for Fatigue
(LHops26 Trial)
What You Need to Know Before You Apply
What is the purpose of this trial?
The purpose of the present study is to test novel countermeasures to reduce fatigue among airline pilots during long-haul flight operations. The investigators will collect objective and subjective sleep, sleepiness, workload, and performance data from active-duty line pilots flying long-haul flight operations (\>8 hours). Data will be collected during days off prior to the trip start, during flights and layover, and during days off following the trip end.
Are You a Good Fit for This Trial?
This trial is for active airline pilots who fly long-haul flights lasting over 8 hours. Participants must be currently working as line pilots and able to take part in all study activities before, during, and after their trips.Inclusion Criteria
Exclusion Criteria
Timeline for a Trial Participant
Screening
Participants are screened for eligibility to participate in the trial
Baseline Data Collection
Participants collect baseline data for one trip with no intervention, including wearing activity and glucose monitors and logging sleep, food intake, and exercise.
Intervention
Participants are randomized to either the intervention or control group. The intervention involves calorie restriction and blue-enriched light exposure during flights.
Follow-up
Participants complete a follow-up survey/debrief about their experience 1-3 months following their participation.
What Are the Treatments Tested in This Trial?
Interventions
- Caloric restriction
- Light exposure
Trial Overview
The study is testing whether exposure to light and limiting calorie intake (caloric restriction) can help reduce fatigue in pilots during long-haul flights. Researchers will monitor sleep patterns, alertness, workload, and performance throughout the trip.
How Is the Trial Designed?
2
Treatment groups
Experimental Treatment
Active Control
The intervention will involve asking pilots to reduce their calorie intake during the biological night to \< 10% of their daily need and to wear blue-enriched light emitting glasses for 20 minutes following their inflight rest break before they return to the flight deck during both outbound and return flights
The control condition will involve reminding pilots about standard fatigue risk management practices that are recommended by their company.
Find a Clinic Near You
Who Is Running the Clinical Trial?
National Aeronautics and Space Administration (NASA)
Lead Sponsor
Civil Aerospace Medical Institute
Collaborator
Washington State University
Collaborator
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