Daily exercise facilitates phase delays of circadian melatonin rhythm in very dim light.

@article{Barger2004DailyEF,
  title={Daily exercise facilitates phase delays of circadian melatonin rhythm in very dim light.},
  author={Laura K. Barger and Kenneth P. Wright and Rod J. Hughes and Charles A. Czeisler},
  journal={American journal of physiology. Regulatory, integrative and comparative physiology},
  year={2004},
  volume={286 6},
  pages={
          R1077-84
        }
}
  • L. BargerK. Wright C. Czeisler
  • Published 1 June 2004
  • Psychology
  • American journal of physiology. Regulatory, integrative and comparative physiology
Shift workers and transmeridian travelers are exposed to abnormal work-rest cycles, inducing a change in the phase relationship between the sleep-wake cycle and the endogenous circadian timing system. Misalignment of circadian phase is associated with sleep disruption and deterioration of alertness and cognitive performance. Exercise has been investigated as a behavioral countermeasure to facilitate circadian adaptation. In contrast to previous studies where results might have been confounded… 
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