Arlene Johnson, of the University of Alabama at Birmingham, surveyed 289 licensed nurses while they were working on the night shift in the hospital setting, and classified the subjects as either sleep deprived or not sleep deprived. The results showed that 56 percent of the sample was sleep deprived.

"Reduction in the amount of sleep predisposes individuals to sleep deprivation, resulting in poor psychomotor performance," said Johnson. "Nurses who work the night shift may be particularly subject to sleep deprivation because of irregularity of sleep hours and disruptions in the circadian cycle. Poor psychomotor performance has been associated with an increase in error, which can be translated into an unsafe work environment. The identification of sleep deprivation in nurses is essential for maintaining safe working conditions."

The amount of sleep a person gets affects his or her physical health, emotional well-being, mental abilities, productivity and performance. Recent studies associate lack of sleep with serious health problems such as an increased risk of depression, obesity, cardiovascular disease and diabetes.

An abstract of this research was presented June 11 at SLEEP 2007, the 21st Annual Meeting of the Associated Professional Sleep Societies (APSS).

Experts recommend that adults get between seven and eight hours of sleep each night to maintain good health and optimum performance.

Persons who think they might be suffering from a sleep disorder are encouraged to consult with their primary care physician, who will refer them to a sleep specialist.

Note: If no author is given, the source is cited instead.

• Insomnia Research
• Sleep Disorder Research
• Workplace Health

• Sleep Disorders
• Insomnia
• Obstructive Sleep Apnea

• Circadian rhythm sleep disorder
• Sleep deprivation
• Rapid eye movement
• Night terror
• Separation anxiety disorder
• Jet lag