This study compares melatonin onsets of night workers to those of day workers to investigate whether differences in the sleep-wake cycle of these individuals are associated with differences in the timing of circadian rhythms. By comparing night workers melatonin onsets after a week of night work to those after a period of two days off work, we will investigate whether activity over the weekend causes the circadian pacemaker to revert to a more """"""""normal"""""""" phase position.

Project Start
Project End
Budget Start
Budget End
Support Year
28
Fiscal Year
1994
Total Cost
Indirect Cost
Name
Oregon Health and Science University
Department
Type
DUNS #
009584210
City
Portland
State
OR
Country
United States
Zip Code
97239
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