Daily Rhythms of Hunger and Satiety in Healthy Men during One Week of Sleep Restriction and Circadian Misalignment

Charli Sargent, Xuan Zhou, Raymond W. Matthews, David Darwent and Gregory D. Roach
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Charli Sargent: Appleton Institute for Behavioural Science, Central Queensland University, P.O. Box 42, Goodwood 5034, Australia
Xuan Zhou: Appleton Institute for Behavioural Science, Central Queensland University, P.O. Box 42, Goodwood 5034, Australia
Raymond W. Matthews: Appleton Institute for Behavioural Science, Central Queensland University, P.O. Box 42, Goodwood 5034, Australia
David Darwent: Appleton Institute for Behavioural Science, Central Queensland University, P.O. Box 42, Goodwood 5034, Australia
Gregory D. Roach: Appleton Institute for Behavioural Science, Central Queensland University, P.O. Box 42, Goodwood 5034, Australia

IJERPH, 2016, vol. 13, issue 2, 1-10

Abstract: The impact of sleep restriction on the endogenous circadian rhythms of hunger and satiety were examined in 28 healthy young men. Participants were scheduled to 2 × 24-h days of baseline followed by 8 × 28-h days of forced desynchrony during which sleep was either moderately restricted (equivalent to 6 h in bed/24 h; n = 14) or severely restricted (equivalent to 4 h in bed/24 h; n = 14). Self-reported hunger and satisfaction were assessed every 2.5 h during wake periods using visual analogue scales. Participants were served standardised meals and snacks at regular intervals and were not permitted to eat ad libitum . Core body temperature was continuously recorded with rectal thermistors to determine circadian phase. Both hunger and satiety exhibited a marked endogenous circadian rhythm. Hunger was highest, and satiety was lowest, in the biological evening ( i.e. , ~17:00–21:00 h) whereas hunger was lowest, and satiety was highest in the biological night ( i.e. , 01:00–05:00 h). The results are consistent with expectations based on previous reports and may explain in some part the decrease in appetite that is commonly reported by individuals who are required to work at night. Interestingly, the endogenous rhythms of hunger and satiety do not appear to be altered by severe—as compared to moderate—sleep restriction.

Keywords: sleep restriction; hunger; satiety; core body temperature; visual analogue scales; forced desynchrony (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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