None listed
Conditions
Brief summary
This study will evaluate which ocular measures of alertness are capable of detecting driving impairment during a two hour track driving session. Drivers will be assessed twice: once when rested and once following 30 hours of continuous wakefulness. Additional assessments of reaction time and sustained attention will be undertaken. These findings will help to determine the validity of ocular measures as a tool for fatigue detection, with the aim of reducing sleep-related motor vehicle accidents. In addition, ten professional drivers will be observed carrying out their normal driving duties for 2000km. Assessments will include lane deviation and ocular measures using Optalert. Daily measures of PVT performance and KSS scores will be taken.
Interventions
Two afternoons of testing, separated by at least one week, undertaking a series of tasks assessing driving performance, sustained attention and reaction time. Sessions will last for approximately three hours commencing at 14:30.
The sessions will be randomised between participants, however the testing order will be the same for both sessions: Psychomotor Vigilance Task (PVT), Karolinska Drowsiness Task (KDT), two hour drive on racetrack at 50km/hr, PVT, KDT.
In addition, ten professional drive
Two afternoons of testing, separated by at least one week, undertaking a series of tasks assessing driving performance, sustained attention and reaction time. Sessions will last for approximately three hours commencing at 14:30. The sessions will be randomised between participants, however the testing order will be the same for both sessions: Psychomotor Vigilance Task (PVT), Karolinska Drowsiness Task (KDT), two hour drive on racetrack at 50km/hr, PVT, KDT. In addition, ten professional drivers will be observed carrying out their normal driving duties for 2000km. Assessments will include lane deviation and ocular measures using Optalert. Daily measures of PVT performance and KSS scores will be taken.
Sponsors
Institute for Breathing and Sleep
Study design
Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Educational / counselling / training
Masking
Open (masking not used)
Eligibility
Sex/Gender
All
Age
21 Years to 50 Years
Healthy volunteers
Yes
Inclusion criteria
(1) current full driver licence (no P-plates). Driving on average more than 5000km per year. (2) no visual problems (unless corrected by contact lenses)
Exclusion criteria
(1) high habitual caffeine intake (>300mg/day) (2) alcohol consumption >5 standard units/week (3) current smoker (4) diagnosed sleep disorder (narcolpesy or sleep apnoea) (5) medical conditions that are a contraindication to driving, eg. uncontrolled epilepsy, stroke, cardiac or respiratory disease. (6) cognitive impairments, intellectual disability or mental illness that impairs driving ability (7) use of sedating medications such as benzodiazepines, antihistamines and narcotic analgesics (8) pregnant women (9) inability to give informed consent
Outcome results
None listed