@article{6111d6fa48e44b1a8f2fe61bb29d4dce,
title = "Field-based longitudinal evaluation of multimodal worker fatigue assessments in offshore shiftwork",
abstract = "Fatigue in offshore environments is a critical safety hazard, yet the utility of daily fatigue assessments has not been longitudinally examined in these environments. The aim of this exploratory longitudinal field study across two drillships in the Gulf of Mexico was to determine the changes in subjective, performance-based, and physiological fatigue measures over time across different shift types (day, night, and swing) and to identify correlations between these multimodal fatigue assessments. Repeated measures correlation analyses of daily fatigue data from seventy offshore workers revealed that while total sleep time remained unaffected by time on rig, workers{\textquoteright} performances on the psychomotor vigilance test (PVT) deteriorated over time across all shift types. Several correlations between the various multimodal measures were consistent with the extant literature on worker fatigue symptoms and perceptual and physiological manifestations. These findings emphasize the utility of PVT and single item self-reports to capture worker fatigue in offshore shiftwork.",
keywords = "Actigraphy, Mental fatigue, PVT, Physical fatigue, Sleepiness, Humans, Wakefulness/physiology, Work Schedule Tolerance/physiology, Fatigue/diagnosis, Psychomotor Performance/physiology, Sleep/physiology, Longitudinal Studies",
author = "John Kang and Payne, {Stephanie C.} and Farzan Sasangohar and Mehta, {Ranjana K.}",
note = "Funding Information: This work is supported by the Gulf Research Program of the National Academies of Sciences, Engineering, and Medicine [grant number 200011061 ] (EMPOWER Safety Dashboards: Evaluate, Measure, and Promote Offshore Worker Engagement and Readiness). Funding Information: All subjective measures were positively correlated with each other, with two exceptions (RPE and FRAME-based cognitive fatigue and sleep-related fatigue sub-scores). However, the correlations between the single-item measures and four types of fatigue measured by FRAME, which is designed specifically for OGE workers, showed positive correlations when measuring the same constructs (e.g., sleep, mental, physical). According to Shortz et al. (2019), the FRAME questionnaire was developed using a qualitative approach based on existing fatigue questionnaires and refined with the involvement of OGE stakeholders and health and safety researchers. As the FRAME questionnaire had never been administered before in field study, this study provides initial convergent validity evidence in a field setting. The results also showed that perceived sleepiness and perceived fatigue (both MF and RPE) were positively correlated. Shen et al. (2006) stated that sleepiness is a state separate from fatigue; however, these two states are interconnected. There is a possibility that workers cannot distinguish between fatigue and sleepiness. Similar to other studies that found mental fatigue negatively impacts physical performance (Van Cutsem et al., 2017), workers' ratings of physical and mental fatigue were positively correlated with one another. As sleep quantity and quality decreased, workers' perceived sleepiness, mental fatigue, and physical fatigue increased. These findings are important, since sleep deprivation is linked to reduced cognitive abilities and vigilance (Dinges et al., 1997; Doran et al., 2001). Consistent with past research, decreases in sleep time were associated with increases in sleepiness (Philip et al., 2012) and poor sleep quality, specifically sleep efficiency, was negatively correlated with mental fatigue (Alapin et al., 2000). Furthermore, the results of this study support the translation of lab-based experimental results to longitudinal studies in offshore settings.This work is supported by the Gulf Research Program of the National Academies of Sciences, Engineering, and Medicine [grant number 200011061] (EMPOWER Safety Dashboards: Evaluate, Measure, and Promote Offshore Worker Engagement and Readiness). Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",
year = "2024",
month = feb,
doi = "10.1016/j.apergo.2023.104164",
language = "English (US)",
volume = "115",
pages = "104164",
journal = "Applied Ergonomics",
issn = "0003-6870",
publisher = "Elsevier Limited",
}