Perceived Workload Is Associated with Cabin Crew Fatigue on Ultra-Long Range Flights

IF 1 4区心理学 Q4 PSYCHOLOGY, APPLIED

International Journal of Aerospace Psychology Pub Date : 2019-06-11 DOI:10.1080/24721840.2019.1621177

Margo J. van den Berg, T. L. Signal, P. Gander

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引用次数: 9

Abstract

ABSTRACT Objective: This study aimed to determine whether on ultra-long range (ULR) flights, perceived workload is an independent predictor of cabin crew fatigue at top-of-descent (TOD) and if so, to what degree it is associated with cabin crew fatigue relative to sleep-related factors. Background: Current ULR scheduling for cabin crew is predominantly based on flight crew data. However, cabin crew workload is very different in nature to that of flight crew. Method: Fifty-five cabin crew wore an actigraph and completed a sleep/duty diary to monitor sleep during a ULR trip. At TOD, crewmembers completed a 5-min Psychomotor Vigilance Task (PVT), rated their sleepiness (Karolinska Sleepiness Scale) and fatigue (Samn-Perelli Crew Status Check), and after landing their workload (NASA Task Load Index). Results: When workload was perceived as higher, crewmembers felt more sleepy and fatigued and had more PVT lapses at TOD. The effect of workload on sleepiness was larger (Cohen’s ƒ2 = .27) than the duration of wakefulness (Cohen’s ƒ2 = .14), but the effect of workload on fatigue (Cohen’s ƒ2 = .17) was smaller than the duration of wakefulness (Cohen’s ƒ2 = .24). Lapses were not associated with sleep history, whereas workload had a small effect (Cohen’s ƒ2 = .14). Conclusion: Workload as a fatigue factor for cabin crew warrants ongoing monitoring. This can be achieved by including a workload question in fatigue reports as an essential component in Fatigue Risk Management Systems.

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感知工作量与超长距离飞行机组人员疲劳有关

摘要目的：本研究旨在确定在超长距离（ULR）飞行中，感知工作量是否是机组人员下降顶部疲劳（TOD）的独立预测因素，如果是，相对于睡眠相关因素，感知工作量在多大程度上与机组人员疲劳相关。背景：目前机组人员的ULR调度主要基于机组人员的数据。然而，客舱机组人员的工作量与飞行机组人员的工作性质大不相同。方法：55名机组人员佩戴活动记录仪，并完成睡眠/值班日记，以监测ULR旅行期间的睡眠情况。在TOD，机组人员完成了5分钟的心理运动警戒任务（PVT），评定了他们的嗜睡程度（卡罗林斯卡嗜睡量表）和疲劳程度（Samn Perelli机组人员状态检查），以及着陆后的工作量（NASA任务负荷指数）。结果：当工作量增加时，机组人员会感到更困、更疲劳，在TOD时PVT失误次数更多。工作负荷对嗜睡的影响（Cohen’sƒ2=.27）大于清醒的持续时间（Cohen‘s \402\2=.14），但工作负荷对疲劳的影响（科恩’sƑ2=.17）小于清醒的持续期（科恩的ƒ; 2=.24），而工作量的影响很小（Cohen的ƒ2=.14）。结论：工作量作为机组人员的疲劳因素，需要持续监测。这可以通过将工作量问题作为疲劳风险管理系统的重要组成部分纳入疲劳报告中来实现。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Aerospace Psychology PSYCHOLOGY, APPLIED-

CiteScore

2.80

自引率

7.70%

发文量