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  1. #1
    IronFreakX's Avatar
    IronFreakX is offline Banned
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    Dec 2004

    Sleep and metabolism/endocrine

    Impact of sleep debt on metabolic and endocrine function.

    Spiegel K, Leproult R, Van Cauter E.

    Department of Medicine, University of Chicago, IL 60637, USA.

    BACKGROUND: Chronic sleep debt is becoming increasingly common and affects millions of people in more-developed countries. Sleep debt is currently believed to have no adverse effect on health. We investigated the effect of sleep debt on metabolic and endocrine functions. METHODS: We assessed carbohydrate metabolism, thyrotropic function, activity of the hypothalamo-pituitary-adrenal axis, and sympathovagal balance in 11 young men after time in bed had been restricted to 4 h per night for 6 nights. We compared the sleep-debt condition with measurements taken at the end of a sleep-recovery period when participants were allowed 12 h in bed per night for 6 nights. FINDINGS: Glucose tolerance was lower in the sleep-debt condition than in the fully rested condition (p<0.02), as were thyrotropin concentrations (p<0.01). Evening cortisol concentrations were raised (p=0.0001) and activity of the sympathetic nervous system was increased in the sleep-debt condition (p<0.02). INTERPRETATION: Sleep debt has a harmful impact on carbohydrate metabolism and endocrine function. The effects are similar to those seen in normal ageing and, therefore, sleep debt may increase the severity of age-related chronic disorders.

  2. #2
    SwoleCat is offline AR Hall of Fame
    Join Date
    Dec 2002
    That sucks because I only slept 4 hours last night and ate more carbs than you could imagine, .

    Before bed and at breakfast.

    Nap time!!


  3. #3
    G-Force's Avatar
    G-Force is offline Anabolic Member
    Join Date
    Jul 2004
    London Baby
    lucky i slept all day today

  4. #4
    collar's Avatar
    collar is offline Anabolic Member
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    Jun 2005
    too much sleep is no good............
    about 8 hours is perfect...

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