Sleep HealthPub Date : 2025-06-01DOI: 10.1016/j.sleh.2025.03.007
Sophia Frick PhD, Karin Smolders PhD, Leander van der Meij PhD, Evangelia Demerouti PhD, Yvonne de Kort PhD
{"title":"The bidirectional relationship between sleep and daily burnout‐related experiences: Self-report vs. actigraphy-derived measures","authors":"Sophia Frick PhD, Karin Smolders PhD, Leander van der Meij PhD, Evangelia Demerouti PhD, Yvonne de Kort PhD","doi":"10.1016/j.sleh.2025.03.007","DOIUrl":"10.1016/j.sleh.2025.03.007","url":null,"abstract":"<div><h3>Objective</h3><div>Although previous research suggests a link between sleep disturbances and burnout, little is known about the causal direction of day-to-day relationships between sleep and experiences related to burnout in nonclinical employees. This study explores the bidirectional relationship between self-reported and actigraphy-derived metrics of sleep and daily burnout‐related experiences (exhaustion, [a lack of] feeling positively challenged, and boredom) and whether these relationships depend on high vs. low levels of trait burnout.</div></div><div><h3>Methods</h3><div>Seventy-two employees participated in a 7-day experience sampling study.</div></div><div><h3>Results</h3><div>Disturbances in sleep quality predicted subsequent daily exhaustion and boredom, not the other way around. In contrast, a later sleep timing was related to feeling more positively challenged the next day, with a bidirectional relationship between feeling positively challenged and sleep offset. Moreover, trait burnout moderated the relationship between several sleep parameters and burnout-related experiences.</div></div><div><h3>Conclusion</h3><div>Experiencing disturbances in sleep while already experiencing trait burnout potentially drives the depletion of energy as found in burnout development and may thus be an important intervention factor to prevent the development of chronic burnout.</div></div>","PeriodicalId":48545,"journal":{"name":"Sleep Health","volume":"11 3","pages":"Pages 382-389"},"PeriodicalIF":3.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143988611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sleep HealthPub Date : 2025-06-01DOI: 10.1016/j.sleh.2025.03.006
Julie S. Nielsen MSc , Emil F. Brunbjerg , Maria Hamann Lorentzen MD , Annika Andersen MSc , Christine E. Parsons PhD
{"title":"Fathers’ sleep in the first 24 months postpartum: A systematic review and meta-analysis of global data","authors":"Julie S. Nielsen MSc , Emil F. Brunbjerg , Maria Hamann Lorentzen MD , Annika Andersen MSc , Christine E. Parsons PhD","doi":"10.1016/j.sleh.2025.03.006","DOIUrl":"10.1016/j.sleh.2025.03.006","url":null,"abstract":"<div><div>Maternal sleep is significantly disrupted in the postpartum period, but changes in paternal sleep are less established. Here, we systematically review and meta-analyze available data on paternal sleep in the first 24<!--> <!-->months post birth, including self-report and objectively measured sleep outcomes. Scopus, PsycINFO, and PubMed were searched for original research articles published until end August 2024. We included studies reporting on quantitative summaries of sleep outcomes and data were pooled using random-effects models primarily. We included 47 studies from 17 countries (N<!--> <!-->=<!--> <!-->9684) with most data coming from fathers in North America (K<!--> <!-->=<!--> <!-->26), and reporting on a diverse range of sleep outcomes. Most data were available for sleep duration (398.29 minutes; 95% CIs 381.43-415.88), night awakenings (1.14; 95% CIs 1.12-1.16), and wake after sleep onset (36.57 minutes; 95% CIs 20.83-64.20). There was high heterogeneity across these three measures (I<sup>2</sup> values >95%). While there were a small number of studies using the Pittsburgh Sleep Quality Index, our pooled estimate suggested poor sleep in fathers (5.93, 95% CIs 4.75-7.41, I<sup>2</sup> <!-->=<!--> <!-->91%). Overall, we found some evidence for sleep in few fathers being below the recommended levels, but the extent of any paternal deficit depended on the sleep measure. The US-centric dataset limits our understanding of fathers’ sleep experiences postnatally, particularly considering the large relative differences between paternity leave access in the United States vs. other countries.</div></div>","PeriodicalId":48545,"journal":{"name":"Sleep Health","volume":"11 3","pages":"Pages 279-292"},"PeriodicalIF":3.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144007225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sleep HealthPub Date : 2025-06-01DOI: 10.1016/j.sleh.2025.01.007
Péter P. Ujma PhD, Róbert Bódizs PhD
{"title":"Sleep homeostasis occurs in a naturalistic setting","authors":"Péter P. Ujma PhD, Róbert Bódizs PhD","doi":"10.1016/j.sleh.2025.01.007","DOIUrl":"10.1016/j.sleh.2025.01.007","url":null,"abstract":"<div><h3>Background</h3><div>Sleep, especially non-rapid eye movement sleep depth is homeostatically regulated, as sleep pressure builds up during wakefulness and diminishes during deep sleep. Previous evidence from this phenomenon, however, mainly stems from experimental studies which may not generalize to an ecologically valid setting.</div></div><div><h3>Methods</h3><div>In the current study, we used a dataset of 246 individuals sleeping for at least seven nights each with a mobile electroencephalography headband according to their ordinary daily schedule to investigate the effect of time spent in wakefulness on sleep characteristics.</div></div><div><h3>Results</h3><div>Increased time in wakefulness prior to sleep was associated with decreased sleep onset latency, increased sleep efficiency, a larger percentage of N3 sleep, and higher delta activity. Moreover, increased sleep pressure resulted in an increase in both the slope and the intercept of the sleep electroencephalography spectrum. As predicted, power spectral density effects were most prominent in the earliest hours of sleep.</div></div><div><h3>Conclusion</h3><div>Our results demonstrate that experimental findings showing increased sleep depth after extended wakefulness generalize to ecologically valid settings, and that time spent awake is an important determinant of sleep characteristics on the subsequent night. Our findings are evidence for the efficacy of sleep restriction, a behavioral technique already widely used in clinical settings, as a simple but powerful method to improve the objective quality of sleep in those with sleep problems.</div></div>","PeriodicalId":48545,"journal":{"name":"Sleep Health","volume":"11 3","pages":"Pages 335-343"},"PeriodicalIF":3.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143568485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sleep HealthPub Date : 2025-06-01DOI: 10.1016/j.sleh.2025.03.003
Elizabeth M. Rea PhD , Amy M. Bohnert PhD , Stephanie J. Crowley PhD
{"title":"Napping, sleep and affect in late- and short- sleeping adolescents: An actigraphy and daily diary study","authors":"Elizabeth M. Rea PhD , Amy M. Bohnert PhD , Stephanie J. Crowley PhD","doi":"10.1016/j.sleh.2025.03.003","DOIUrl":"10.1016/j.sleh.2025.03.003","url":null,"abstract":"<div><h3>Objectives</h3><div>Adolescents in the United States do not typically attain enough sleep at night due to a combination of factors, including biological maturation and academic and social commitments. This lack of sleep leads to poor cognitive, mental, and physical health outcomes. Naps may compensate for inadequate sleep, however, little is known about how napping affects nocturnal sleep and mood over time among adolescents who are poor sleepers.</div></div><div><h3>Methods</h3><div>The present study used daily diary and actigraphy data collected over 15<!--> <!-->days in a sample of late- and short-sleeping adolescents (n<!--> <!-->=<!--> <!-->99; M<sub>age</sub> <!-->=<!--> <!-->15.9<!--> <!-->years; 55% Female; 46% White, 30% Black, and 24% Multiracial/Other). Multilevel modeling was utilized to examine daily associations between daytime napping and subsequent nocturnal sleep outcomes, controlling for previous night sleep. Sex was explored as a moderator.</div></div><div><h3>Results</h3><div>The majority of participants (76%) napped at least once during the study period, and almost one-fifth of the sample demonstrated “habitual” or frequent napping. Nap occurrence was associated with a decrease in total sleep time by 27 minutes as well as later sleep onset time that night. Later nap offset time was associated with later nocturnal sleep onset time, and longer nap duration was associated with later nocturnal sleep onset time and lower sleep efficiency. Napping was unrelated to affect. Sex did not moderate any relations between napping and nocturnal sleep or affect.</div></div><div><h3>Conclusions</h3><div>The findings indicate that napping is common and generally associated with worse nocturnal sleep outcomes among a sample of late- and short-sleeping adolescents.</div></div>","PeriodicalId":48545,"journal":{"name":"Sleep Health","volume":"11 3","pages":"Pages 317-325"},"PeriodicalIF":3.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143988610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sleep HealthPub Date : 2025-06-01DOI: 10.1016/j.sleh.2025.03.005
Hannah Ahrensberg MSc , Sofie Rossen Møller MSc , Anne Illemann Christensen PhD , Susan Andersen PhD , Christina Bjørk Petersen PhD
{"title":"Insufficient sleep in the Danish adult population: A 10-year trend analysis","authors":"Hannah Ahrensberg MSc , Sofie Rossen Møller MSc , Anne Illemann Christensen PhD , Susan Andersen PhD , Christina Bjørk Petersen PhD","doi":"10.1016/j.sleh.2025.03.005","DOIUrl":"10.1016/j.sleh.2025.03.005","url":null,"abstract":"<div><h3>Objectives</h3><div>To examine (1) trends in insufficient sleep among adults in Denmark from 2013 to 2023; (2) sociodemographic characteristics associated with insufficient sleep; and (3) self-reported reasons for insufficient sleep.</div></div><div><h3>Methods</h3><div>Data were derived from the nationally representative Danish Health and Morbidity Surveys conducted in 2013, 2017, 2021, and 2023. In each wave 25,000 individuals aged 16 years or older were invited to participate (response proportions: 40%-60%). Insufficient sleep was measured as never or almost never getting enough sleep to feel well-rested.</div></div><div><h3>Results</h3><div>The proportions reporting insufficient sleep increased from 10.3% in 2013 to 15.9% in 2023. Consistently, a higher proportion was observed among women, and among the younger age groups (age 16-44<!--> <!-->years). A clear social gradient was observed, with higher odds of insufficient sleep among those with <10<!--> <!-->years education (OR 2.13, 95% CI: 1.91; 2.37) compared to those with ≥15<!--> <!-->years of education. Self-reported reasons for insufficient sleep varied slightly across survey waves. In 2023, primary reasons included thoughts and worries related to family or personal matters (44.4%) and getting to bed too late due to entertainment from digital devices (35.5%). However, the specific reasons varied by sex and age groups.</div></div><div><h3>Conclusions</h3><div>The proportion of adults reporting insufficient sleep has increased substantially over the past decade. Clear and consistent sex and age differences, as well as social inequalities in insufficient sleep in all waves indicate the need for targeted initiatives promoting sleep health.</div></div>","PeriodicalId":48545,"journal":{"name":"Sleep Health","volume":"11 3","pages":"Pages 364-370"},"PeriodicalIF":3.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144051909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sleep HealthPub Date : 2025-06-01DOI: 10.1016/j.sleh.2025.02.007
Lauren E. Barber PhD, MSc, Daekiara Smith-Ireland MPH, Bassey Enun MD, Dayna A. Johnson PhD, MPH
{"title":"Understanding sleep health in Black American adults: A qualitative analysis of barriers, facilitators, and perspectives on sleep interventions","authors":"Lauren E. Barber PhD, MSc, Daekiara Smith-Ireland MPH, Bassey Enun MD, Dayna A. Johnson PhD, MPH","doi":"10.1016/j.sleh.2025.02.007","DOIUrl":"10.1016/j.sleh.2025.02.007","url":null,"abstract":"<div><h3>Objectives</h3><div>Black Americans have a high prevalence of poor sleep health. Understanding their perceptions about sleep could identify determinants of poor sleep in this population and inform culturally tailored interventions. However, qualitative data are lacking. Using focus groups, we assessed Black American adults’ sleep perceptions, facilitators/barriers to sleep, beliefs about sleep recommendations, and perspectives on sleep interventions.</div></div><div><h3>Methods</h3><div>Participants (N<!--> <!-->=<!--> <!-->36) attended online focus groups to discuss their perceptions and knowledge about sleep. A semistructured discussion guide was used to direct the conversation. Focus group data were transcribed and analyzed using a rapid analytic approach to identify themes.</div></div><div><h3>Results</h3><div>Mean age of participants was 34 (SD<!--> <!-->=<!--> <!-->13.1) years, and 64% identified as women. Women and men slept less than the recommended hours of sleep (average sleep duration of 6.4 and 6.9 hours, respectively). Most participants defined healthy sleep as quality over quantity and viewed sleep as an important contributor to health and well-being. Exercise, limiting screen time, and suitable sleep environments were common perceived healthy sleep facilitators. Some participants misperceived electronic use and cosleeping, maladaptive strategies to cope with stress, as facilitators. Stress, responsibilities, electronic use, and unsuitable sleep environments were barriers. Participants wished to obtain personalized, racially tailored healthy sleep recommendations through highly accessible modes of dissemination (e.g., social media, websites).</div></div><div><h3>Conclusions</h3><div>The findings suggest study participants valued quality sleep. However, stress, responsibilities, and sleep-hindering behaviors may contribute to poor sleep health. Targeting stress reduction, healthy sleep behaviors, and disseminating racially tailored information through accessible modes may be useful sleep intervention strategies in this community.</div></div>","PeriodicalId":48545,"journal":{"name":"Sleep Health","volume":"11 3","pages":"Pages 265-274"},"PeriodicalIF":3.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143774556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sleep HealthPub Date : 2025-06-01DOI: 10.1016/j.sleh.2025.01.005
Jiayuan Tu MD , Xiaoqiao Mo MD , Zihao Chen MD , Lijuan Xi MD , Chunhui Wu MD , Tian Xie MD , Yongzhuang Chen MD
{"title":"Association of different folate statuses with sleep disturbances in adults in the US: Data from NHANES 2007-2016","authors":"Jiayuan Tu MD , Xiaoqiao Mo MD , Zihao Chen MD , Lijuan Xi MD , Chunhui Wu MD , Tian Xie MD , Yongzhuang Chen MD","doi":"10.1016/j.sleh.2025.01.005","DOIUrl":"10.1016/j.sleh.2025.01.005","url":null,"abstract":"<div><h3>Objective</h3><div>To explore the associations between three folate statuses (folate intake, serum folate, and red blood cell folate) and sleep disturbances in adults.</div></div><div><h3>Methods</h3><div>Trends in sleep disturbances in five consecutive cycles were evaluated using Cochran–Armitage tests. Survey-weighted logistic regression models, restricted cubic spline models, and interaction analysis were used to evaluate the associations between different statuses of folate and sleep disturbances.</div></div><div><h3>Results</h3><div>This cross-sectional study included 20,200 eligible adults from five cycles of NHANES (2007-2016). The overall crude prevalence of sleep disturbances increased over time from 25.8% (95% confidence intervals, 23.6%, 28.0%) in 2007-2008 to 29.3% (95% confidence intervals, 25.9%, 32.9%) in 2015-2016 (<em>P</em> for trend <.001). In adjusted, weighted multivariable regression models, compared to the second quartile (Q2), lower folate intake levels (Q1, odds ratio<!--> <!-->=<!--> <!-->1.22, 95% confidence intervals: 1.06, 1.40), higher folate intake levels (Q4, odds ratio<!--> <!-->=<!--> <!-->1.18, 95% confidence intervals: 1.01, 1.38), and higher red blood cell folate levels (Q4, odds ratio<!--> <!-->=<!--> <!-->1.17, 95% confidence intervals: 1.03, 1.33) were independently associated with higher odds of sleep disturbances. The restricted cubic spline models revealed U-shaped, nonlinear associations between different folate statuses and the risk of sleep disturbances. A daily folate intake of approximately 439 mcg, a serum folate concentration of approximately 35<!--> <!-->nom/L, and an red blood cell folate concentration of approximately 886<!--> <!-->nmol/L were associated with the lowest risk of sleep disturbances. The results were robust in interaction and sensitivity analyses.</div></div><div><h3>Conclusions</h3><div>We observed U-shaped associations between folate intake, serum folate, red blood cell folate, and sleep disturbances among US adults.</div></div>","PeriodicalId":48545,"journal":{"name":"Sleep Health","volume":"11 3","pages":"Pages 326-334"},"PeriodicalIF":3.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143517110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Temporal changes in sleep parameters and body mass index after using a sleep-tracking app with gamification","authors":"Masao Iwagami MD, MPH, MSc, PhD , Jaehoon Seol PhD , Masashi Yanagisawa MD, PhD","doi":"10.1016/j.sleh.2025.03.001","DOIUrl":"10.1016/j.sleh.2025.03.001","url":null,"abstract":"<div><h3>Objectives</h3><div>We examined whether sleep parameters would improve with a sleep-tracking game app and whether the participants’ improvement was associated with changes in their body mass index.</div></div><div><h3>Methods</h3><div>We analyzed data from 2063 volunteer Japanese participants (mean age 38.3<!--> <!-->±<!--> <!-->10.7<!--> <!-->years, 82.1% female) who used both the Pokémon Sleep and Asken apps for ≥90<!--> <!-->days.</div></div><div><h3>Results</h3><div>During the 90<!--> <!-->days after starting the Pokémon Sleep app, on average, total sleep time increased by approximately 0.8 hour from 5.5 to 6.3 hours. Calculating the slopes for individuals, improvements were noted for total sleep time, sleep latency, percentage of wakefulness after sleep onset, and bedtime among 45.3%, 18.1%, 24.4%, and 21.3% of the participants, respectively. Body mass index tended to decrease faster in participants with improved total sleep time, sleep latency, and bedtime.</div></div><div><h3>Conclusions</h3><div>A sleep-tracking game app improved sleep parameters of some users, and this improvement was associated with a decrease in body mass index.</div></div>","PeriodicalId":48545,"journal":{"name":"Sleep Health","volume":"11 3","pages":"Pages 275-278"},"PeriodicalIF":3.4,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144041858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}