Misaligned core body temperature rhythms impact cognitive performance of hospital shift work nurses

dc.contributor.authorMolzof, Hylton E.
dc.contributor.authorPrapanjaroensin, Aoyjai
dc.contributor.authorPatel, Vivek H.
dc.contributor.authorMokashi, Mugdha, V
dc.contributor.authorGamble, Karen L.
dc.contributor.authorPatrician, Patricia A.
dc.contributor.otherUniversity of Alabama Birmingham
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2023-09-28T20:40:11Z
dc.date.available2023-09-28T20:40:11Z
dc.date.issued2019
dc.description.abstractCircadian rhythms greatly influence 24-h variation in cognition in nearly all organisms, including humans. Circadian clock impairment and sleep disruption are detrimental to hippocampus-dependent memory and negatively influence the acquisition and recall of learned behaviors. The circadian clock can become out of sync with the environment during circadian misalignment. Shift work represents a real-world model of circadian misalignment that can be studied for its physiological implications. The present study aimed to test the hypothesis that circadian misalignment disrupts vigilance and cognitive performance on occupationally relevant tasks using shift work as a model. As such, we sought to (1) explore the general effects of night- and day-shift worker schedules on sleep-wake parameters and core body temperature (CBT) phase, and (2) determine whether shift-type and CBT phase impact cognitive performance and vigilance at the end of a 12-h shift. We observed a sample of day-shift and night-shift hospital nurses over a 10-day period. At the end of three, consecutive, 12-h shifts (7 pm-7am or 7am-7 pm), participants completed a cognitive battery assessing vigilance, cognitive throughput, and medication calculation fluency (via an investigator developed and tested metric). Night-shift nurses exhibited significantly greater sleep fragmentation as well as a greater disparity between their wake-time and time of CBT minimum compared to day-shift nurses. Night-shift nurses exhibited significantly slower cognitive proficiency at the end of their shifts, even after adjustment for CBT phase. These results suggest that circadian disruption and reduced sleep quality both contribute to cognitive functioning and performance.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationMolzof, H. E., Prapanjaroensin, A., Patel, V. H., Mokashi, M. V., Gamble, K. L., & Patrician, P. A. (2019). Misaligned core body temperature rhythms impact cognitive performance of hospital shift work nurses. In Neurobiology of Learning and Memory (Vol. 160, pp. 151–159). Elsevier BV. https://doi.org/10.1016/j.nlm.2019.01.002
dc.identifier.doi10.1016/j.nlm.2019.01.002
dc.identifier.orcidhttps://orcid.org/0000-0003-4649-1258
dc.identifier.orcidhttps://orcid.org/0000-0003-3813-8577
dc.identifier.urihttps://ir.ua.edu/handle/123456789/11751
dc.languageEnglish
dc.language.isoen_US
dc.publisherElsevier
dc.subjectCircadian misalignment
dc.subjectCircadian rhythms
dc.subjectActigraphy
dc.subjectShift work
dc.subjectCognition
dc.subjectSleep
dc.subjectCIRCADIAN-RHYTHMS
dc.subjectCORTISOL SECRETION
dc.subjectSLEEP-DEPRIVATION
dc.subjectBRIGHT-LIGHT
dc.subjectMELATONIN
dc.subjectDISRUPTION
dc.subjectTIME
dc.subjectADAPTATION
dc.subjectALERTNESS
dc.subjectDARKNESS
dc.subjectBehavioral Sciences
dc.subjectNeurosciences
dc.subjectPsychology
dc.subjectPsychology, Multidisciplinary
dc.titleMisaligned core body temperature rhythms impact cognitive performance of hospital shift work nursesen_US
dc.typeArticle
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