BACKGROUND: The fact that most women experience sleep changes across the menstrual cycle is thought to be associated with changes in circadian rhythms; however, few studies have investigated this relationship. METHODS: We applied an ultrashort sleep-wake schedule to eight healthy women and studied diurnal fluctuations in sleep propensity, sleepiness, rectal temperature, and serum concentrations of melatonin, thyroid-stimulating hormone, and cortisol in the follicular and luteal phases. RESULTS: In the luteal phase, amplitude of core body temperature, total melatonin secretions, and amplitudes of TSH and cortisol rhythms were significantly decreased, whereas sleepiness and occurrence of slow-wave sleep during the daytime were significantly increased. Differences in the amount of daytime slow-wave sleep across the menstrual cycle were positively correlated with differences in the daily mean rectal temperature. CONCLUSIONS: The findings suggest that the amplitude of circadian oscillation may be dampened in the luteal phase. Increased daytime sleepiness in the luteal phase may be associated with increased daytime slow-wave sleep, due possibly to changes in thermoregulation in the luteal phase.
BACKGROUND: The fact that most women experience sleep changes across the menstrual cycle is thought to be associated with changes in circadian rhythms; however, few studies have investigated this relationship. METHODS: We applied an ultrashort sleep-wake schedule to eight healthy women and studied diurnal fluctuations in sleep propensity, sleepiness, rectal temperature, and serum concentrations of melatonin, thyroid-stimulating hormone, and cortisol in the follicular and luteal phases. RESULTS: In the luteal phase, amplitude of core body temperature, total melatonin secretions, and amplitudes of TSH and cortisol rhythms were significantly decreased, whereas sleepiness and occurrence of slow-wave sleep during the daytime were significantly increased. Differences in the amount of daytime slow-wave sleep across the menstrual cycle were positively correlated with differences in the daily mean rectal temperature. CONCLUSIONS: The findings suggest that the amplitude of circadian oscillation may be dampened in the luteal phase. Increased daytime sleepiness in the luteal phase may be associated with increased daytime slow-wave sleep, due possibly to changes in thermoregulation in the luteal phase.
Authors: Parisa Vidafar; Joshua J Gooley; Angus C Burns; Shantha M W Rajaratnam; Melanie Rueger; Eliza Van Reen; Charles A Czeisler; Steven W Lockley; Sean W Cain Journal: Sleep Date: 2018-08-01 Impact factor: 5.849
Authors: Sean W Cain; Christopher F Dennison; Jamie M Zeitzer; Aaron M Guzik; Sat Bir S Khalsa; Nayantara Santhi; Martin W Schoen; Charles A Czeisler; Jeanne F Duffy Journal: J Biol Rhythms Date: 2010-08 Impact factor: 3.182
Authors: Diane B Boivin; Ari Shechter; Philippe Boudreau; Esmot Ara Begum; Ng Mien Kwong Ng Ying-Kin Journal: Proc Natl Acad Sci U S A Date: 2016-09-12 Impact factor: 11.205
Authors: Judit Tenk; Péter Mátrai; Péter Hegyi; Ildikó Rostás; András Garami; Imre Szabó; Margit Solymár; Erika Pétervári; József Czimmer; Katalin Márta; Alexandra Mikó; Nóra Füredi; Andrea Párniczky; Csaba Zsiborás; Márta Balaskó Journal: PLoS One Date: 2016-11-21 Impact factor: 3.240
Authors: Angelina Birchler-Pedross; Sylvia Frey; Thomas Götz; Patrick Brunner; Vera Knoblauch; Anna Wirz-Justice; Sarah L Chellappa; Christian Cajochen Journal: Biology (Basel) Date: 2016-12-09