Evaluation of Fatigue in Short-Haul Operations Across Multiple Airlines
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 204
- 试验地点
- 1
- 主要终点
- Vigilant Attention
研究概览
简要总结
The purpose of the present study is to assess fatigue levels of short-haul pilots during normal operations. The investigators will collect objective and subjective sleep, sleepiness, workload, and performance data from on-duty pilots during short-haul flight operations. Data will be collected during days off prior to the trip start, during flights, and during days off following the flight operations.
详细描述
Protocol Summary. The investigators will collect objective and subjective sleep, sleepiness, workload, and performance data from on-duty pilots during the aforementioned short-haul flight operations. Data will be collected during days off prior to the trip start, during flights, and during days off following the flight operations. Each participant will collect data during two trips lasting 2-7 days each, with up to 3 days of off-duty data collection before and after each trip, for a total data collection of up to 26 days per pilot.
Study Aims. The goal of this study is to provide insight into the influence of trips including circadian disruption on pilot cognitive performance, fatigue, sleepiness, sleep, and workload during short-haul operations across multiple airlines.
Hypothesis. Cognitive performance, fatigue, sleepiness, and sleep outcomes will be worse during circadian disrupted trips compared to trips that do not involve circadian disruption.
Statistical Analyses. The following factors will be also considered for inclusion in the analysis:
- Schedule features: flight duration, duty duration, duty start and finish times
- Individual factors: age, experience, chronotype (as measured by the morningness-eveningness questionnaire), sleep need
- Sleep: sleep duration, sleep loss, sleep start and finish times (all measured by the actiwatch)
- Fatigue/alertness: pre- and post-sleep and on-duty fatigue and alertness ratings (as measured by subjective scales)
- Workload: hassle factors encountered during flights and NASA TLX
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 60 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •All medically qualified, active-duty pilots currently flying short-haul operations are eligible to be included as participants in the study. Participants must be line pilots that spend at least 50% of their typical monthly schedule flying short-haul operations (defined at flights under 6 hours duration).
- •Participants must be scheduled for and willing to collect data on each of the following:
- •Trip with Circadian Disruption. A trip containing one of the following types of WOCL infringement:
- •Overnight FDPs. An FDP in which the pilot is operating one or more flights through the WOCL (0200-0559h) relative to the pilot's home-base time or clock time.
- •Circadian Switching. At least one FDP that starts between 0000-0659h relative to home-base time, followed by at least one FDP that ends between 0000-0659h, or vice versa, within the same trip (e.g., an FDP that begins at 0500h and the next FDP ends at 0100h or vice versa).
- •Trip without Circadian Disruption. This trip must not contain any duties that are scheduled to begin or end between 0000h and 0659h relative to home-base time.
排除标准
- •No additional exclusion criteria
结局指标
主要结局
Vigilant Attention
时间窗: up to 26 days
Measured through the Psychomotor Vigilance Task (PVT) (a simple reaction time task; measures include mean reaction time, response speed (1/RT), and number of lapses (RT \> 500ms))
Sleep
时间窗: up to 26 days
Measured through actigraphy which uses accelerometry and a light sensor to determine sleep and wake patterns and may be worn for several weeks at a time
Fatigue/alertness
时间窗: up to 26 days
Samn Perelli and Karolinska Sleepiness Scale (KSS): pre- and post-sleep and on-duty fatigue and alertness ratings (as measured by subjective scales) Samn Perelli: 7 point likert scale, 1-7 with higher scores indicating higher levels of fatigue. Karolinska Sleepiness Scale: 9-point likert scale, 1-9 with higher scores indicating higher levels of sleepiness.
次要结局
未报告次要终点
研究者
Erin E. Flynn-Evans
Laboratory Director
National Aeronautics and Space Administration (NASA)