Accession Number:

ADA239774

Title:

Sleep Logs: Measurement of Individual and Operational Efficiency

Descriptive Note:

Interim rept. Oct 1988-May 1991

Corporate Author:

NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA

Report Date:

1991-05-01

Pagination or Media Count:

24.0

Abstract:

Sleep logistics are based on scientific knowledge of how sleep loss influences human performance, and provides techniques to assure that every member of a group receives sufficient sleep at appropriate times so that serious sleep loss does not interfere with mission completion. Sleep logistics require careful measurement of the amount and pattern of sleep each group member can obtain during a given mission scenario. There are many tools for measuring amounts and patterns of sleep. The most economical and preferred method to study sleep, especially in a large group of individuals, has been the sleep log diary. Two to four days of sleep log data were collected from 39 Navy and Marine Corps personnel during an at-sea Naval operation in the Persian Gulf. For the overall group, the average sleep episode duration was 6.8 hours per 24-hours without serious sleep fragmentation. An exception was a group of four boiler technicians. These boiler technicians accumulated a sleep debt which might interfere with maintaining sustained attention and situational awareness. Various techniques for analyzing sleep log data are discussed. Advantages and disadvantages of sleep log techniques are compared to those of other methods of collecting sleep data.

Subject Categories:

  • Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE