Sex difference in the near-24-hour intrinsic period of the human circadian timing system | Proceedings of the National Academy of Sciences thumbnail
Sex difference in the near-24-hour intrinsic period of the human circadian timing system | Proceedings of the National Academy of Sciences
www.pnas.org
The circadian rhythms of melatonin and body temperature are set to an earlier hour in women than in men, even when the women and men maintain nearly identical and consistent bedtimes and wake times 157 individuals (52 women, 105 men; aged 18–74 y) studied in a month-long inpatient protocol designed
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  • The circadian rhythms of melatonin and body temperature are set to an earlier hour in women than in men, even when the women and men maintain nearly identical and consistent bedtimes and wake times
  • 157 individuals (52 women, 105 men; aged 18–74 y) studied in a month-long inpatient protocol designed to minimize confounding influences on circadian period estimation. Overall, the average intrinsic period of the melatonin and temperature rhythms in this population was very close to 24 h [24.15 ± 0.2 h (24 h 9 min ± 12 min)]. We further found that...

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