Sleep disturbance and cognitive functioning among firefighters.

Area of Science:

• Occupational Health
• Sleep Medicine
• Cognitive Neuroscience

Background:

• Firefighters face chronic sleep disruption from demanding shift schedules and hazardous work environments.
• Shift work, particularly the 24-hour on/48-hour off rotation, poses significant challenges to adequate sleep.
• Hazardous conditions inherent to firefighting further exacerbate sleep-related risks.

Purpose of the Study:

• To assess the impact of firefighter shift schedules on sleep duration and quality.
• To determine the effects of sleep disruption on cognitive functions, including processing speed, sustained attention, and vigilance.
• To evaluate the relationship between shift work, sleep, and mental health in firefighters.

Main Methods:

• Forty-five firefighters participated in the study.
• Sleep duration and quality were assessed.
• Cognitive functions (processing speed, sustained attention, vigilance) and mental health were evaluated at the start and end of shifts.

Main Results:

• Firefighters reported sleeping an average of 5 hours and 21 minutes during work shifts.
• Even minimal sleep disruption was found to negatively affect cognitive functions.
• Impaired cognitive functions included processing speed, visual-motor coordination, and reaction time.

Conclusions:

• Firefighter shift schedules significantly disrupt sleep duration and quality.
• Sleep disruption adversely impacts critical cognitive functions necessary for job performance.
• These cognitive deficits increase the likelihood of errors, poor work performance, and potential injuries in firefighters.