Assessing the effect of shipboard motion and sleep surface on sleep effectiveness

Download
Author
Sullivan, Matthew C.
Date
2009-12Advisor
Miller, Nita Lewis
Second Reader
McCauley, Michael E.
Metadata
Show full item recordAbstract
Sleep in today's Navy is in short supply. When it is possible for Sailors and officers to sleep, that sleep should be as efficient as possible. This study sought to determine if motion affects sleep efficiency, and if sleeping surface could be used to mitigate the disturbed sleeping patterns caused by motion. To accomplish this goal, the researchers employed a motion machine driven with motion profiles from the USS Swift (HSV-2), a catamaran style vessel that may have many of the same motion characteristics as future ships. In addition, two mattress types, a standard Navy and a visco-elastic foam mattress, were compared to determine if sleep efficiency differed between the two sleeping surfaces. Twelve volunteers participated in the human-in-the-loop study. Results from the laboratory study demonstrated that motion had a significant effect on sleep efficiency. Additionally, a survey administered to each participant upon completion of the experiment found that self-reported sleep quality was better in the stationary condition. Finally, tests using activity counts and acceleration data were conducted to determine if a given mattress type was more effective at reducing the amount of shock and vibration transmitted through the motion platform. These results showed a clear advantage for the visco-elastic surface.
Description
Human Systems Integration Report
Related items
Showing items related by title, author, creator and subject.
-
The effect of high speed vessel operations on ship's crew and embarked personnel aboard HSV-2 SWIFT in the areas of motion sickness and motion induced task interruptions
Diaz, Alvaro (Monterey, California. Naval Postgraduate School, 2005-12);The Navy's use of high speed vessels such as HSV-2 SWIFT has raised questions of the effects of high speed motion on the ability of personnel to perform assigned duties. Performance degradation may occur during periods ... -
Radio frequency signal reception via distributed wirelessly networked sensors under random motion
Lintz, William A. (Monterey, California: Naval Postgraduate School, 2009-09);This research investigates the reception of radio frequency signals using wirelessly networked autonomous sensor nodes under random motion. Emphasis is placed on investigating effects of random motion on sensor array ... -
Motion sickness, crew performance, and reduced manning in high-speed vessel operations
Calvert, John J. (Monterey, California. Naval Postgraduate School, 2005-12);This study examined the effects of ship motion on motion sickness, adaptation, susceptibility, and performance. Data were collected onboard HSV-2 SWIFT during four periods from May 2004 to April 2005. HSV-2 SWIFT was chosen ...