Plasma growth hormone and slow wave sleep increase after interruption of sleep.

@article{Beck1975PlasmaGH,
  title={Plasma growth hormone and slow wave sleep increase after interruption of sleep.},
  author={Ulrich Beck and Vlasta Březinov{\'a} and W. M. Hunter and Ian Oswald},
  journal={The Journal of clinical endocrinology and metabolism},
  year={1975},
  volume={40 5},
  pages={812-5}
}
A comparison was made of plasma hGH and of sleep stages during one night of undistrubed sleep and one night in which sleep was interupted by an hour of enforced wakefulness folowing the end of the second NREM-REM sleep cycle in 8 normal subjects. Plasma was sampled at 15-min intervals. HGH and slow wave sleep were both significantly increased in the two cycles immediately following the period awake compared with the same two cycles during nights of uninterruped sleep. The difference arose… CONTINUE READING