+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

In-flight sleep, pilot fatigue and Psychomotor Vigilance Task performance on ultra-long range versus long range flights

In-flight sleep, pilot fatigue and Psychomotor Vigilance Task performance on ultra-long range versus long range flights

Journal of Sleep Research 22(6): 697-706

This study evaluated whether pilot fatigue was greater on ultra-long range (ULR) trips (flights >16 h on 10% of trips in a 90-day period) than on long range (LR) trips. The within-subjects design controlled for crew complement, pattern of in-flight breaks, flight direction and departure time. Thirty male Captains (mean age = 54.5 years) and 40 male First officers (mean age = 48.0 years) were monitored on commercial passenger flights (Boeing 777 aircraft). Sleep was monitored (actigraphy, duty/sleep diaries) from 3 days before the first study trip to 3 days after the second study trip. Karolinska Sleepiness Scale, Samn-Perelli fatigue ratings and a 5-min Psychomotor Vigilance Task were completed before, during and after every flight. Total sleep in the 24 h before outbound flights and before inbound flights after 2-day layovers was comparable for ULR and LR flights. All pilots slept on all flights. For each additional hour of flight time, they obtained an estimated additional 12.3 min of sleep. Estimated mean total sleep was longer on ULR flights (3 h 53 min) than LR flights (3 h 15 min; P(F) = 0.0004). Sleepiness ratings were lower and mean reaction speed was faster at the end of ULR flights. Findings suggest that additional in-flight sleep mitigated fatigue effectively on longer flights. Further research is needed to clarify the contributions to fatigue of in-flight sleep versus time awake at top of descent. The study design was limited to eastward outbound flights with two Captains and two First Officers. Caution must be exercised when extrapolating to different operations.

(PDF emailed within 0-6 h: $19.90)

Accession: 037080105

Download citation: RISBibTeXText

PMID: 23889686

DOI: 10.1111/jsr.12071

Related references

Pilot Sleep in Long-Range and Ultra-Long-Range Commercial Flights. Aerospace Medicine and Human Performance 90(2): 109-115, 2019

Mitigating and monitoring flight crew fatigue on a westward ultra-long-range flight. Aviation, Space, and Environmental Medicine 85(12): 1199-1208, 2015

There And Back Again: Circadian Modulation Of Sleep In Pilots Flying Ultra-Long Range Flights. Sleep 40(Suppl_1): A64-A65, 2017

Monitoring and Managing Cabin Crew Sleep and Fatigue During an Ultra-Long Range Trip. Aerospace Medicine and Human Performance 86(8): 705-713, 2015

Sleep and sleepiness during an ultra long-range flight operation between the Middle East and United States. Accident; Analysis and Prevention 45(Suppl.): 27-31, 2012

Vigilance on the civil flight deck: incidence of sleepiness and sleep during long-haul flights and associated changes in physiological parameters. Ergonomics 44(1): 82-106, 2001

Graphene-based long-range SPP hybrid waveguide with ultra-long propagation length in mid-infrared range. Optics Express 24(5): 5376-5386, 2016

Sleep deprivation and time-on-task performance decrement in the rat psychomotor vigilance task. Sleep 38(3): 445-451, 2015

Importance of short-range versus long-range Hartree-Fock exchange for the performance of hybrid density functionals. Journal of Chemical Physics 125(7): 074106, 2006

Obstructive sleep apnea and psychomotor vigilance task performance. Nature and Science of Sleep 6: 65-71, 2014

Non-REM sleep-disordered breathing affects performance on the psychomotor vigilance task. Sleep and Breathing 22(2): 329-335, 2017

Psychomotor vigilance task performance during and following chronic sleep restriction in rats. Sleep 38(4): 515-528, 2015

Topographic electroencephalogram changes associated with psychomotor vigilance task performance after sleep deprivation. Sleep Medicine 15(9): 1132-1139, 2015

The relationships between improvements in daytime sleepiness, fatigue and depression and psychomotor vigilance task testing with CPAP use in patients with obstructive sleep apnea. Sleep Medicine 49: 81-89, 2018

Neurological indices of fatigue in flight personnel in long-range and military transport aviation. Voenno-Meditsinskii Zhurnal 1: 76-78, 1973