Effects of Full Spectrum Lighting in Submarines
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 09, 1987
- Accession Number
- ADA180486
Entities
People
- Saul M. Luria
Organizations
- Naval Submarine Medical Research Laboratory