Journal
JOURNAL OF BIOLOGICAL RHYTHMS
Volume 20, Issue 4, Pages 353-365Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0748730405277233
Keywords
human; circadian rhythms; shift work; jet lag; bright light; melatonin; phase response curve; phase shifts
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Funding
- NHLBI NIH HHS [R01 HL086934] Funding Source: Medline
- NINR NIH HHS [R01 NR07667, R01 NR007677] Funding Source: Medline
- NIOSH CDC HHS [R01 OH003954] Funding Source: Medline
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Night shift work and rapid transmeridian travel result in a misalignment between circadian rhythms and the new times for sleep, wake, and work, which has health and safety implications for both the individual involved and the general public. Entrainment to the new sleep/wake schedule requires circathan rhythms to be phase-shifted, but this is often slow or impeded. The authors show superimposed light and melatonin PRCs to explain how to appropriately time these zeitgebers to promote circadian adaptation. They review studies in which bright light and melatonin were administered to try to counteract jet lag or to produce circadian adaptation to night work. They demonstrate how jet lag could be prevented entirely if rhythms are shifted before the flight using their preflight plan and discuss the combination of interventions that they now recommend for night shift workers.
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