Sleep timing may modulate the effect of sleep loss on testosterone.

@article{Schmid2012SleepTM,
  title={Sleep timing may modulate the effect of sleep loss on testosterone.},
  author={Sebastian M. Schmid and Manfred Hallschmid and Kamila Jauch-Chara and Hendrik Lehnert and Bernd Schultes},
  journal={Clinical endocrinology},
  year={2012},
  volume={77 5},
  pages={
          749-54
        }
}
BACKGROUND Sleep loss has been shown to reduce secretory activity of the pituitary-gonadal axis in men, but the determinants of this effect are unknown. OBJECTIVE To discriminate the effects of sleep duration and sleep timing on serum concentrations of luteinizing hormone (LH), testosterone (T) and prolactin (PRL). METHODS Fifteen young, healthy men (27·1 ± 1·3 years; BMI, 22·9 ± 0·3 kg/m(2) ) were examined in a condition of sleep time restriction to 4 h (bedtime, 02:45 -07:00 h) for two… CONTINUE READING

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