Cardiac Autonomic Control and Neural Arousal as Indexes of Fatigue in Professional Bus Drivers.
Autonomic nervous system
Flicker fusion
Heart rate control
Mental fatigue
Sleep disorders
Journal
Safety and health at work
ISSN: 2093-7911
Titre abrégé: Saf Health Work
Pays: Korea (South)
ID NLM: 101542940
Informations de publication
Date de publication:
Jun 2022
Jun 2022
Historique:
received:
03
09
2021
revised:
19
12
2021
accepted:
23
01
2022
entrez:
6
6
2022
pubmed:
7
6
2022
medline:
7
6
2022
Statut:
ppublish
Résumé
Bus driving is a mentally demanding activity that requires prolonged attention to ensure safety. The aim of the study was to assess mental fatigue caused by driving a public bus and to find a profile of workers at higher risk. We evaluated changes of critical flicker fusion (CFF) (index of central arousal) and heart rate variability (HRV) (index of autonomic balance) in a 6-hour driving shift on a real route, in 31 professional bus drivers, and we tested the influence of personal factors such as sleep quality, BMI, and age. Paired t-test was used to test differences of CFF and HRV between both initial and final phase of driving, while multiple linear regression tested the influence of personal variables on the indexes of mental fatigue. Results showed that CFF significantly decreased after 6 hours of bus driving (41.91 Hz, sd 3.31 vs. 41.15 Hz, sd 3.15; p = 0.041), and heart rate significantly decreased in the final phase of driving, with respect to the initial phase (85 vs. 78 bpm, p = 0.027). Increasing age (beta = -0.729, p = 0.022), risk of obstructive sleep apnea syndrome (beta = -0.530, p = 0.04), and diurnal sleepiness (beta = -0.406, p = 0.017) showed a significant effect on influencing mental fatigue. Elderly drivers at higher risk of sleep disorders are more prone to mental fatigue, when exposed to driving activity. Monitoring indexes of central arousal and autonomic balance, coupled with the use of structured questionnaires can represent a useful strategy to detect profile of workers at higher risk of mental fatigue in such duty.
Sections du résumé
Background
UNASSIGNED
Bus driving is a mentally demanding activity that requires prolonged attention to ensure safety. The aim of the study was to assess mental fatigue caused by driving a public bus and to find a profile of workers at higher risk.
Methods
UNASSIGNED
We evaluated changes of critical flicker fusion (CFF) (index of central arousal) and heart rate variability (HRV) (index of autonomic balance) in a 6-hour driving shift on a real route, in 31 professional bus drivers, and we tested the influence of personal factors such as sleep quality, BMI, and age. Paired t-test was used to test differences of CFF and HRV between both initial and final phase of driving, while multiple linear regression tested the influence of personal variables on the indexes of mental fatigue.
Results
UNASSIGNED
Results showed that CFF significantly decreased after 6 hours of bus driving (41.91 Hz, sd 3.31 vs. 41.15 Hz, sd 3.15; p = 0.041), and heart rate significantly decreased in the final phase of driving, with respect to the initial phase (85 vs. 78 bpm, p = 0.027). Increasing age (beta = -0.729, p = 0.022), risk of obstructive sleep apnea syndrome (beta = -0.530, p = 0.04), and diurnal sleepiness (beta = -0.406, p = 0.017) showed a significant effect on influencing mental fatigue.
Conclusion
UNASSIGNED
Elderly drivers at higher risk of sleep disorders are more prone to mental fatigue, when exposed to driving activity. Monitoring indexes of central arousal and autonomic balance, coupled with the use of structured questionnaires can represent a useful strategy to detect profile of workers at higher risk of mental fatigue in such duty.
Identifiants
pubmed: 35664913
doi: 10.1016/j.shaw.2022.01.007
pii: S2093-7911(22)00007-5
pmc: PMC9142350
doi:
Types de publication
Journal Article
Langues
eng
Pagination
148-154Informations de copyright
© 2022 Occupational Safety and Health Research Institute.
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
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