Accession Number:

ADA180486

Title:

Effects of Full Spectrum Lighting in Submarines

Descriptive Note:

Interim rept.

Corporate Author:

NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT

Personal Author(s):

Report Date:

1987-04-09

Pagination or Media Count:

26.0

Abstract:

Crewmen on a nuclear submarine were monitored during two patrols, one during which the submarine was lighted with standard fluorescent lights and a second during which it was equipped with full spectrum lights whose spectral distribution is much more similar to sunlight and emit a greater amount of high energy ultraviolet light. The levels of 25-OH vitamin D in their blood was measured at the start and during the sixth week of each patrol. In addition, the men kept daily logs during the patrols noting such things as their health and mood. There was no evidence that the full spectrum lights prevent the typical decline of vitamin D levels in the blood during a patrol. However, the initial levels of vitamin D in the blood were quite different, it difficult to interpret the results. The men preferred the full-spectrum light and rated their health as being better under this light, but this was not accompanied by higher ratings of mood or quality of sleep.

Subject Categories:

  • Stress Physiology
  • Air Conditioning, Heating, Lighting and Ventilating
  • Submarine Engineering
  • Human Factors Engineering and Man Machine Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE