Effects of partial sleep deprivation: A comparative assessment of young non-professional and professional taxi drivers |
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| Institution: | 1. Department of Physiology, Sri Devaraj Urs Medical College, Sri Devaraj Urs Academy of Higher Education and Research (Deemed to be University), Kolar 563103, Karnataka, India;2. Department of Cell Biology and Molecular Genetics, Sri Devaraj Urs Academy of Higher Education and Research (Deemed to be University), Kolar 563103, Karnataka, India;3. Department of Pathology, Sri Devaraj Urs Medical College, Sri Devaraj Urs Academy of Higher Education and Research (Deemed to be University), Kolar 563103, Karnataka, India;1. Department of Psychiatry, Shaoxing Seventh People''s Hospital, Affiliated Mental Health Center, Medical College of Shaoxing University, Shaoxing, Zhejiang, China;2. Department of Behavioral Neurosciences, Science Research Center of Medical School, Shaoxing University, Shaoxing, Zhejiang 312000, China;3. Department of Neurology, Shaoxing Hospital, China Medical University, Shaoxing, Zhejiang, China;4. Department of Orthopedics, Shaoxing People’s Hospital, Shaoxing, Zhejiang, China;1. Transportation Systems Engineering, Department of Civil Engineering, Indian Institute of Technology (IIT) Bombay, Powai, Mumbai 400 076, India;2. Industrial & Systems Engineering, Indian Institute of Technology (IIT) Kharagpur, Kharagpur 721302, India;3. School of Business and Economics, Loughborough University, Leicestershire LE11 3TU, UK;1. Eye Institute of Xiamen University, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, School of Medicine, Xiamen University, Xiamen, Fujian 361104, China;2. Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts 02114, USA;3. Department of Ophthalmology, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian 361004, China;4. Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ontario 027399, Canada;5. Department of Ophthalmology, Xiang’an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian 361104, China;6. Xiamen University Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian 361004, China;7. Department of Ophthalmology, the First Affiliated Hospital of University South China, Hengyang, Hunan 421200, China |
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| Abstract: | AimThis study aims to determine the effects of partial sleep deprivation (PSD) on driving performance of professional and young non-professional drivers.MethodsThe study included fifty participants (20 professional taxi drivers and 30 young non-professional drivers) driving the simulator-cab in three conditions. The first test session (TS1) was conducted after one night of PSD followed by the second test (TS2) after two consecutive nights of PSD. The driving performance metrics in two conditions of PSD (i.e., sleep duration = 4.25 ± 0.5 h) were compared with the baseline drive with no sleep loss. Sleep restriction was monitored using Actiwatch. Drivers subjectively self-reported their alertness using Karolinska Sleepiness Scale (KSS). Driving performance metrics and reaction time to emergency events were collected during each drive.ResultsA preliminary mixed-design ANOVA showed deterioration in driving performance of all drivers in terms of speed (p < 0.1), speed variability (p = 0.06), standard deviation in lateral positions (SDLP) (p < 0.001) and delayed reaction time (p < 0.05). Separate Mixed-Effects Generalized Linear Models for professional and non-professional drivers showed that speed variability, SDLP and reaction time increased from baseline during both the PSD tests, among both the driving groups. The speed variability, SDLP and reaction time of professional drivers differed significantly from other drivers under PSD conditions. Contrary to the existing belief, the professional drivers had significant decrements in driving performance due to PSD.ConclusionA critical and comparative analysis revealed that driving experience/skill of professional drivers does not improve their resistance to deteriorating effects of sleep loss. |
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| Keywords: | Driver fatigue Alertness Driving performance Professional/occupational drivers Non-professional drivers |
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