Stability of Melatonin and Temperature as Circadian Phase Markers and Their Relation to Sleep Times in Humans

@article{Benloucif2005StabilityOM,
  title={Stability of Melatonin and Temperature as Circadian Phase Markers and Their Relation to Sleep Times in Humans},
  author={Susan Benloucif and Mary Joy Guico and Kathryn Reid and Lisa F. Wolfe and Mireille L’Hermite-Bal{\'e}riaux and Phyllis C. Zee},
  journal={Journal of Biological Rhythms},
  year={2005},
  volume={20},
  pages={178 - 188}
}
Circadian rhythms of core body temperature and melatonin are commonly used as phase markers of the circadian clock. Melatonin is a more stable marker of circadian phase when measured under constant routine conditions. However, little is known about the variability of these phase markers under less controlled conditions. Moreover, there is little consensus about the preferred method of analysis. The objective of this study was to assess various methods of calculating melatonin and temperature… 

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