Discriminating Between Fatigue and Sleepiness in the Naval Operational Environment

Matsangas, Panagiotis; Shattuck, Nita Lewis

doi:10.1080/15402002.2016.1228645

Cited by 8 publications

(3 citation statements)

References 42 publications

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“…Particular attention should be paid to the distinction between fatigue and sleepiness. This was clarified by Matsangas and Shattuck [ 10 ] comparing the correlation of the ESS and FSS questionnaires of U.S. Navy crew members. They found that subjects’ subjective fatigue did not necessarily correlate with subjective sleepiness, so these should be considered as different constructs.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, different questionnaire cut-off values might complicate a uniform evaluation. For example, Matsangas and Shattuck [ 10 ] reported different FSS cut-offs ranging from >3 to ≥5.4 ( Table 3 ).…”

Section: Discussionmentioning

confidence: 99%

“…Even though sleepiness—unlike fatigue—can therefore be measured, e.g., using the Multiple Sleep Latency Test (MSLT), a clear definition and distinction between the terms fatigue and sleepiness is difficult, and therefore, these terms are often used interchangeably in publications [ 8 ]. Currently, there is a debate as to whether sleepiness can be considered a sub-component of fatigue [ 9 ] or whether the terms refer to two different constructs [ 10 ]. In the literature, sleepiness is often described as reduced central nervous activation, which can be attributed primarily to little or non-restorative sleep and has no correlation to psychological causes [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Measurement Methods of Fatigue, Sleepiness, and Sleep Behaviour Aboard Ships: A Systematic Review

Kerkamm

Dengler

Eichler

et al. 2021

IJERPH

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Since seafarers are known to be exposed to numerous job-related stress factors that can cause fatigue, sleepiness, and disturbed sleep behaviour, the aim of this review was to provide an overview of the subjective and objective measurement methods of these strains. Using a systematic review, 166 studies were identified within the period of January 2010 to December 2020 using the PubMed database. Of the 21 studies selected, 13 used both subjective and objective measurement methods. Six studies used only subjective and two studies only objective methods. For subjective assessment, 12 different questionnaires could be identified as well as activity and sleeping logs. Actigraphy and reaction time tests (RTT) were the most common objective methods. In single cases, electrooculography (EOG), pupillometry and ambulatory polysomnography (PSG) were used. Measurement-related limitations due to vessel-related impacts were less often reported than expected. No restrictions of daily routines on board were described, and only single-measurement disturbances due to ship movements were mentioned. The present literature review reveals that there are various routines to measure fatigue, sleepiness, and sleep behaviour on board. A combination of subjective and objective methods often appears to be beneficial. The frequent use of actigraphy and RTT on board suggests good feasibility and reliable measurements with these methods. The use of ambulatory PSG in maritime-like contexts suggests that this method would also be feasible on board.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%