Accession Number : ADA291264

Title :   The Effect of Bright Light and LEET on Sleep after a 10-Hour Phase Delay.

Descriptive Note : Final rept. 1 Oct 91-30 Sep 94

Corporate Author : NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA

Personal Author(s) : Kelly, Tamsin L. ; Hyduk, Roza ; Ryman, David

PDF Url : ADA291264

Report Date : NOV 1994

Pagination or Media Count : 22

Abstract : Shift work and jet lag can cause circadian desynchronosis. Bright light and Low Energy Emission Therapy (LEET), separately and together, were tested as interventions to improve sleep after a 10-hr phase delay of the work/rest cycle. Both interventions decreased awakenings during the first daytime sleep period after the phase shift. After 3 nights of bright light administration from 2200-0200 each night, the subjects who received bright light had greater total sleep time, better sleep efficiency, and less wake time during the sleep period as compared to subjects who were exposed to dim light. Three days of LEET treatment for 20-min prior to each daytime sleep period showed a non-significant trend for similar additive benefits, with the group who received both bright light and LEET showing greater total sleep time than the group who received only light, and the group that received only LEET showing greater total sleep time than the control group who received neither intervention.

Descriptors :   *EXPOSURE(PHYSIOLOGY), *PHASE SHIFT, *SLEEP, CONTROL, EMISSION, CIRCADIAN RHYTHMS, LIGHT, EFFICIENCY, CYCLES, TIME, BRIGHTNESS, LOW ENERGY, WAKE, THERAPY, ADDITIVES, NIGHT, BENEFITS, REST, JET LAG.

Subject Categories : Stress Physiology
      Psychology
      Personnel Management and Labor Relations

Distribution Statement : APPROVED FOR PUBLIC RELEASE