Accession Number : ADA290908

Title :   Microclimate Cooling Effect on Tension/Anxiety and Fatigue in Field and Laboratory Settings.

Descriptive Note : Rept. for May-Aug 89,

Corporate Author : NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA

Personal Author(s) : Burr, Ralph G. ; Heaney, Jay H. ; Banta, Guy R. ; Sopchick, Tracy L.

PDF Url : ADA290908

Report Date : JUL 1993

Pagination or Media Count : 17

Abstract : Crew members aboard U.S. Navy ships in the Persian Gulf work under high-heat and high-humidity conditions. Exposure to heat has been shown to affect sleep quality, and to cause tension, anxiety, and fatigue, and to decrease performance capabilities and cognitive operations. Because many ship spaces cannot be air conditioned, a microclimate cooling system was tested as an alternative. Objectives of this study were to measure and compare levels of tension/anxiety and fatigue in subjects during watchstanding sessions, with and without a cooling ice vest. There was a statistically significant effect on tension/anxiety; subjects ha an increase in tension/anxiety from pre-watch to post-watch in the no-ice vest condition, but tension/anxiety decreased during the watch when an ice vest was worn. The change in fatigue during watchstanding with the ice vest and without was not statistically significant. A subsequent laboratory replication of this Persian Gulf field study corroborated these results. The majority of the subjects in both the field and laboratory portions of this study reported that the ice vest was helpful during watchstanding, that it did not interfere with their ability to do their job, and that they would recommend future use of the ice vest. The results of this stud suggest that a passive microclimate cooling system (ice vest) would be beneficial for the mood and comfort of naval personnel deployed in high heat/humidity regions.

Descriptors :   *COOLING, *COOLING AND VENTILATING EQUIPMENT, *MICROCLIMATOLOGY, *HEAT STRESS(PHYSIOLOGY), SHIPS, NAVAL VESSELS, EXPOSURE(GENERAL), PERSIAN GULF, NAVAL PERSONNEL, PERFORMANCE(ENGINEERING), HIGH TEMPERATURE, COGNITION, PASSIVE SYSTEMS, REGIONS, QUALITY, ICE, CREWS, PHYSIOLOGICAL EFFECTS, TENSION, FATIGUE, HEAT, HIGH HUMIDITY, SLEEP, ANXIETY, VESTS.

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Meteorology
      Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE