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Article ; Online: Who discovered rapid eye movement sleep? The claims for precedence.

Shochat, Tamar / Lavie, Peretz

2024 Volume 47, Issue 4

MeSH term(s)	Humans ; Sleep, REM ; Polysomnography ; REM Sleep Behavior Disorder
Language	English
Publishing date	2024-02-17
Publishing country	United States
Document type	Journal Article
ZDB-ID	424441-2
ISSN	1550-9109 ; 0161-8105
ISSN (online)	1550-9109
ISSN	0161-8105
DOI	10.1093/sleep/zsae027
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Zs.A 1475: Show issues

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Article ; Online: Microbiota Metabolite Profiles and Dietary Intake in Older Individuals with Insomnia of Short vs. Normal Sleep Duration.

Even, Carmel / Magzal, Faiga / Shochat, Tamar / Haimov, Iris / Agmon, Maayan / Tamir, Snait

Biomolecules

2024 Volume 14, Issue 4

Abstract: Recent evidence suggests that the gut microbiota plays a role in insomnia pathogenesis. This study compared the dietary habits and microbiota metabolites of older adults with insomnia of short vs. normal sleep duration (ISSD and INSD, respectively). Data ...

Abstract	Recent evidence suggests that the gut microbiota plays a role in insomnia pathogenesis. This study compared the dietary habits and microbiota metabolites of older adults with insomnia of short vs. normal sleep duration (ISSD and INSD, respectively). Data collection included sleep assessment through actigraphy, dietary analysis using the Food Frequency Questionnaire, and metabolomic profiling of stool samples. The results show that ISSD individuals had higher body mass index and a greater prevalence of hypertension. Significant dietary differences were observed, with the normal sleep group consuming more kilocalories per day and specific aromatic amino acids (AAAs) phenylalanine and tyrosine and branch-chain amino acid (BCAA) valine per protein content than the short sleep group. Moreover, metabolomic analysis identified elevated levels of the eight microbiota metabolites, benzophenone, pyrogallol, 5-aminopental, butyl acrylate, kojic acid, deoxycholic acid (DCA), trans-anethole, and 5-carboxyvanillic acid, in the short compared to the normal sleep group. The study contributes to the understanding of the potential role of dietary and microbial factors in insomnia, particularly in the context of sleep duration, and opens avenues for targeted dietary interventions and gut microbiota modulation as potential therapeutic approaches for treating insomnia.
MeSH term(s)	Humans ; Male ; Female ; Aged ; Sleep Initiation and Maintenance Disorders/metabolism ; Sleep Initiation and Maintenance Disorders/microbiology ; Sleep Initiation and Maintenance Disorders/diet therapy ; Sleep ; Gastrointestinal Microbiome ; Middle Aged ; Feces/microbiology ; Metabolome ; Diet ; Metabolomics ; Sleep Duration
Language	English
Publishing date	2024-03-30
Publishing country	Switzerland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2701262-1
ISSN	2218-273X ; 2218-273X
ISSN (online)	2218-273X
ISSN	2218-273X
DOI	10.3390/biom14040419
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Article: Editorial: Integrating Neurophysiological and Behavioral Changes From Midlife to Old Age.

Agmon, Maayan / Youngstedt, Shawn D / Shochat, Tamar

Frontiers in aging neuroscience

2022 Volume 14, Page(s) 964473

Language	English
Publishing date	2022-06-28
Publishing country	Switzerland
Document type	Editorial
ZDB-ID	2558898-9
ISSN	1663-4365
ISSN	1663-4365
DOI	10.3389/fnagi.2022.964473
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Article ; Online: Assessment of Sleep Duration and Number of Awakenings Based on Ankle and Wrist Actigraphy in Medical Hospitalized Older Patients.

Smichenko, Juliana / Shochat, Tamar / Zisberg, Anna

Biological research for nursing

2022 Volume 24, Issue 4, Page(s) 448–458

Abstract: Background: Most studies performed in the hospital assess sleep using self-reports; few rely on actigraphy. Although wrist actigraphy is commonly used for sleep assessment in field studies, in-hospital assessment may be challenging and cumbersome ... ...

Abstract	Background: Most studies performed in the hospital assess sleep using self-reports; few rely on actigraphy. Although wrist actigraphy is commonly used for sleep assessment in field studies, in-hospital assessment may be challenging and cumbersome because other more necessary monitoring devices are often attached to patients' upper limbs; these may affect interpretation of wrist activity data. Placement on the ankle may be a viable solution. Objective: To compare total sleep time (TST) and number of awakenings (NOA) using concomitant wrist and ankle actigraphy, as well as self-reports in a sample of older adult patients hospitalized in medical units. Methods: This was a prospective observational study. Objective sleep data were collected using ankle and wrist actigraphy, and subjective data using sleep diary. Repeated measures mixed model analysis was performed, adjusting for age, gender, sleep medications, symptoms severity, interaction between types of measure, and night number. Results: Twenty-one older adults (65+) wore ankle and wrist actigraphy devices and subjectively estimated sleep parameters for an average of (2.15 ± 1.01) nights, with 40 nights available for analysis. TST was lower for wrist than ankle actigraphy ( Conclusions: Despite differences between ankle and wrist assessments, all three methods provided consistent TST estimation within participants. Findings provide preliminary support for the use of ankle actigraphy for sleep assessment in hospital settings.
MeSH term(s)	Actigraphy/methods ; Aged ; Ankle ; Humans ; Polysomnography/methods ; Sleep ; Wrist
Language	English
Publishing date	2022-05-05
Publishing country	United States
Document type	Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't
ZDB-ID	2145107-2
ISSN	1552-4175 ; 1099-8004
ISSN (online)	1552-4175
ISSN	1099-8004
DOI	10.1177/10998004221095567
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Article ; Online: The Effects of Parental Intervention on Sleep Patterns and Electronic Media Exposure in Young Adolescents.

Flint Bretler, Ofra / Tzischinsky, Orna / Asraf, Kfir / Shochat, Tamar

Clocks & sleep

2022 Volume 4, Issue 1, Page(s) 129–144

Abstract: Objective: This study evaluated the effectiveness of a parent-focused intervention aimed at the promotion of healthy sleep patterns and controlled exposure to electronic media (EM) in young adolescents. Participants: The sample included 70 dyads of ... ...

Abstract	Objective: This study evaluated the effectiveness of a parent-focused intervention aimed at the promotion of healthy sleep patterns and controlled exposure to electronic media (EM) in young adolescents. Participants: The sample included 70 dyads of parents (68 mothers and 2 fathers) and adolescents. Intervention and control groups each consisted of 35 young adolescents with a mean age of 10.7 (0.9) years old. Methods: Three waves of data collection included baseline, post-intervention, and 3 month follow-up. In each wave, adolescents reported habitual electronic media exposure and sleep patterns for a week and wore an actigraph for five nights. Parents in the intervention group participated in a six-session interactive workshop, while parents in the control group received equivalent written information by mail. Results: The intervention led to earlier bedtimes (p < 0.001), increased sleep efficiency (p < 0.01), increased sleep duration (p < 0.001) and reduced video games exposure (p < 0.01). Benefits were maintained at the follow-up. Conclusion: Interventions tailored for parents can create lasting positive changes in sleep patterns and EM exposure in young adolescents.
Language	English
Publishing date	2022-03-01
Publishing country	Switzerland
Document type	Journal Article
ISSN	2624-5175
ISSN (online)	2624-5175
DOI	10.3390/clockssleep4010013
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Article ; Online: Let them sleep: The effects of a scheduled nap during the night shift on sleepiness and cognition in hospital nurses.

Zion, Nataly / Shochat, Tamar

Journal of advanced nursing

2019 Volume 75, Issue 11, Page(s) 2603–2615

Abstract: Aims: The aim of this study was to examine the effectiveness of a scheduled 30-min nap and its interaction with individual factors on sleepiness and cognition during an 8-hr night shift.: Design: This prospective, within-subjects study conducted ... ...

Abstract	Aims: The aim of this study was to examine the effectiveness of a scheduled 30-min nap and its interaction with individual factors on sleepiness and cognition during an 8-hr night shift. Design: This prospective, within-subjects study conducted between 2011-2014 compared sleepiness and cognition with/without a nap during the night shift, in 109 female nurses, tested on two nights with and two nights without a nap in counterbalanced order. Methods: Nurses completed the Munich ChronoType Questionnaire for Shiftwork, Pittsburgh Sleep Quality Index and Pre-Sleep Arousal Scale at study onset. They reported sleepiness hourly and performed the Digit Symbol Substitution and the Letter Cancellation Tasks at 3:00 and 7:00 a.m. They took a nap at 4:00 a.m. on nap nights and worked as usual on no-nap nights. Sleep-wake patterns were monitored using actigraphs 24 hr before and during the shift. Caffeine consumption, workload and adverse events were reported. To assess the effectiveness of a scheduled nap, mixed-models and repeated measures analyses of variance were used. Results: Lower levels of sleepiness were found at 5:00, 6:00 and 7:00 a.m. on nap versus no-nap nights. Increments in performance between 3:00-7:00 a.m. were significantly greater on nap versus no-nap nights for Digit Symbol Substitution Task correct responses and Letter Cancellation Task capacity. No interactions between the nap and any of the individual factors emerged. Conclusion: A scheduled nap provides an effective countermeasure against the negative consequences of night-time shift work in female nurses above and beyond interpersonal differences. Impact: Changes in attitude and policy are required to implement this beneficial and cost-effective strategy. Trial registration number: ACTRN12618001857291.
MeSH term(s)	Adult ; Cognition ; Female ; Humans ; Middle Aged ; Nursing Staff, Hospital ; Prospective Studies ; Reproducibility of Results ; Sleep ; Sleepiness ; Work Schedule Tolerance
Language	English
Publishing date	2019-05-30
Publishing country	England
Document type	Journal Article
ZDB-ID	197634-5
ISSN	1365-2648 ; 0309-2402
ISSN (online)	1365-2648
ISSN	0309-2402
DOI	10.1111/jan.14031
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Article: Impact of lifestyle and technology developments on sleep.

Shochat, Tamar

Nature and science of sleep

2012 Volume 4, Page(s) 19–31

Abstract: Although the physiological and psychological mechanisms involved in the development of sleep disorders remain similar throughout history, factors that potentiate these mechanisms are closely related to the "zeitgeist", ie, the sociocultural, ... ...

Abstract	Although the physiological and psychological mechanisms involved in the development of sleep disorders remain similar throughout history, factors that potentiate these mechanisms are closely related to the "zeitgeist", ie, the sociocultural, technological and lifestyle trends which characterize an era. Technological advancements have afforded modern society with 24-hour work operations, transmeridian travel and exposure to a myriad of electronic devices such as televisions, computers and cellular phones. Growing evidence suggests that these advancements take their toll on human functioning and health via their damaging effects on sleep quality, quantity and timing. Additional behavioral lifestyle factors associated with poor sleep include weight gain, insufficient physical exercise and consumption of substances such as caffeine, alcohol and nicotine. Some of these factors have been implicated as self-help aids used to combat daytime sleepiness and impaired daytime functioning. This review aims to highlight current lifestyle trends that have been shown in scientific investigations to be associated with sleep patterns, sleep duration and sleep quality. Current understanding of the underlying mechanisms of these associations will be presented, as well as some of the reported consequences. Available therapies used to treat some lifestyle related sleep disorders will be discussed. Perspectives will be provided for further investigation of lifestyle factors that are associated with poor sleep, including developing theoretical frameworks, identifying underlying mechanisms, and establishing appropriate therapies and public health interventions aimed to improve sleep behaviors in order to enhance functioning and health in modern society.
Language	English
Publishing date	2012-03-06
Publishing country	New Zealand
Document type	Journal Article
ZDB-ID	2587468-8
ISSN	1179-1608
ISSN	1179-1608
DOI	10.2147/NSS.S18891
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Article ; Online: Cognitive functioning of female nurses during the night shift: The impact of age, clock time, time awake and subjective sleepiness.

Zion, Nataly / Shochat, Tamar

Chronobiology international

2018 Volume 35, Issue 11, Page(s) 1595–1607

Abstract: Decline in cognitive functioning in the workplace is a major concern for health care systems. Understanding factors associated with nighttime functioning is imperative for instituting organizational risk management policies and developing personalized ... ...

Abstract	Decline in cognitive functioning in the workplace is a major concern for health care systems. Understanding factors associated with nighttime functioning is imperative for instituting organizational risk management policies and developing personalized countermeasures. The present study aims to identify individual factors associated with cognitive functioning during the night shift of hospital nurses working on irregular rotating-shift schedules. Ninety-two female nurses were recruited from 17 wards in two general hospitals, using convenience sampling by clusters. Inclusion criteria were working at least 28 h a week (75% of full time) and one night shift per week. Exclusion criteria were pregnancy, diagnosed sleep disorders or medical conditions that may affect sleep and/or function. Cognitive performance was measured during the middle (03:00 h) and at the end (07:00 h) of the night shift using the Digit Symbol Substitution Task (DSST) and the Letter Cancellation Task (LCT) over two night shifts. Subjective sleepiness was assessed by the Karolinska Sleepiness Scale (KSS) at the same time points. All participants completed a sociodemographic questionnaire, the Munich ChronoType Questionnaire for Shift-Workers (MCTQShift) and the Pittsburgh Sleep Quality Index (PSQI). Sleep duration 24 h before the night shift and time awake since last sleep opportunity were monitored by actigraphy. Univariate repeated measures ANOVA found main effects for clock time (p<0.001), age (p<0.05), time awake (p<0.05) and sleepiness (p<0.01) for DSST correct responses; main effects for clock time (p<0.001) and sleepiness (p<0.001) for LCT capacity; and main effects for clock time (p<0.001) and age (p<0.01) for LCT omission errors. All factors remained significant in a mixed-model analysis for DSST. Cognitive performance among hospital nurses is low during the middle of the night shift and increases at the end of the shift; decreased functioning is associated with increased subjective sleepiness, older age and prolonged time awake. Identifying factors contributing to performance during the night shift may provide a basis for the development of risk management policies and preventative interventions.
MeSH term(s)	Adult ; Age Factors ; Attention/physiology ; Circadian Rhythm ; Cognition/physiology ; Disorders of Excessive Somnolence/physiopathology ; Female ; Humans ; Middle Aged ; Sleep/physiology ; Sleep Disorders, Circadian Rhythm/physiopathology ; Sleepiness ; Wakefulness/physiology ; Work Schedule Tolerance/physiology
Language	English
Publishing date	2018-08-24
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	998996-1
ISSN	1525-6073 ; 0742-0528
ISSN (online)	1525-6073
ISSN	0742-0528
DOI	10.1080/07420528.2018.1497642
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Article ; Online: Is time elapsed between cannabis use and sleep start time associated with sleep continuity? An experience sampling method.

Sznitman, Sharon R / Shochat, Tamar / Greene, Talya

Drug and alcohol dependence

2020 Volume 208, Page(s) 107846

Abstract: Background: A substantial proportion of people using cannabis report using it to improve sleep. Yet, little research exists on the associations between the timing of cannabis use and sleep. This study examines the time elapsed between cannabis use and ... ...

Abstract	Background: A substantial proportion of people using cannabis report using it to improve sleep. Yet, little research exists on the associations between the timing of cannabis use and sleep. This study examines the time elapsed between cannabis use and sleep start time and its association with two of the main indicators of sleep continuity: (1) sleep onset latency (SOL) and (2) number of awakenings (NOA) throughout the night. Methods: Each morning, for 7 consecutive days, daily cannabis users (n = 54) reported on the timing of previous night's cannabis use and sleep indicators on their smartphones. Mixed effects models examined the relations of within- and between-subjects' time elapsed between previous night cannabis use and sleep start time, with (1) SOL and (2) NOA. Results: Within subjects, shorter time elapsed between cannabis use and sleep start time was associated with shorter SOL (β = 0.519, p = 0.010), but not NOA (β = -0.030, p = 0.535). Furthermore, between individuals, the time gap between the previous night cannabis use and sleep start time was not associated with SOL or NOA (p > 0.05). Conclusions: It is possible that cannabis use proximal to bedtime is associated with shorted sleep onset latency but not nighttime awakenings. Cannabis users should be informed about both the potential sleep aid effects of cannabis and its limitations. Pending further evidence of the effects of cannabis on sleep, cannabis users experiencing sleep problems should be provided with evidence-based alternatives to improve sleep, e.g., pharmacological and behavioral treatments.
MeSH term(s)	Adult ; Ecological Momentary Assessment ; Female ; Humans ; Male ; Marijuana Use/adverse effects ; Marijuana Use/psychology ; Marijuana Use/trends ; Middle Aged ; Sleep Latency/drug effects ; Sleep Latency/physiology ; Sleep-Wake Transition Disorders/chemically induced ; Sleep-Wake Transition Disorders/diagnosis ; Sleep-Wake Transition Disorders/psychology ; Time Factors
Language	English
Publishing date	2020-01-11
Publishing country	Ireland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	519918-9
ISSN	1879-0046 ; 0376-8716
ISSN (online)	1879-0046
ISSN	0376-8716
DOI	10.1016/j.drugalcdep.2020.107846
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Article ; Online: The association between objective measurements of sleep quality and postural control in adults: A systematic review.

Kirshner, Dani / Spiegelhalder, Kai / Shahar, Roy T / Shochat, Tamar / Agmon, Maayan

Sleep medicine reviews

2022 Volume 63, Page(s) 101633

Abstract: We systematically reviewed the association between objective sleep quality and postural control based on objective measurements. We searched the electronic databases PUBMED, CINAHL, SCOPUS and Web of Science for studies assessing the relationship between ...

Abstract	We systematically reviewed the association between objective sleep quality and postural control based on objective measurements. We searched the electronic databases PUBMED, CINAHL, SCOPUS and Web of Science for studies assessing the relationship between objective measurements of sleep and postural control or gait performance among adults above age 18. All types of articles until April 2020 were considered. The search yielded 2967 articles, and out of these, inclusion criteria were met by five cross-sectional and two longitudinal studies (N = 7). Three studies found a positive correlation between sleep efficiency and gait speed, three studies found a negative correlation between wake time after sleep onset (WASO) and gait speed or postural control, and one study found no association between sleep parameters and gait speed. Objectively measured sleep quality parameters such as sleep efficiency and WASO were associated with objective measures of posture and gait. More studies with longitudinal designs are needed to expose causal pathways and mechanisms underlying these relationships.
MeSH term(s)	Actigraphy ; Adolescent ; Adult ; Cross-Sectional Studies ; Humans ; Postural Balance ; Sleep ; Sleep Quality
Language	English
Publishing date	2022-04-09
Publishing country	England
Document type	Journal Article ; Review ; Systematic Review
ZDB-ID	1414211-9
ISSN	1532-2955 ; 1087-0792
ISSN (online)	1532-2955
ISSN	1087-0792
DOI	10.1016/j.smrv.2022.101633
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