Lijun Li, Xingxing Wang, Jian Zhou, Min Liu, Sha Wang, Yi Zhou, Yuxuan Li, Yue Kang, Jianfei Xie, Andy S K Cheng
{"title":"Factors associated with chronotype, job burnout, and perceived stress among nurses in Chinese tertiary hospitals: A multicenter cross-sectional study.","authors":"Lijun Li, Xingxing Wang, Jian Zhou, Min Liu, Sha Wang, Yi Zhou, Yuxuan Li, Yue Kang, Jianfei Xie, Andy S K Cheng","doi":"10.1080/07420528.2024.2373224","DOIUrl":"10.1080/07420528.2024.2373224","url":null,"abstract":"<p><p>Shift work is a recognized work pattern for nurses worldwide. The disruption of shift workers' biological clocks usually leads to sleep disorders and affects their awareness at work. Eveningness and occupational stress might be effective in causing burnout syndrome. Therefore, this study aimed to evaluate the chronotype, job burnout and perceived stress among Chinese tertiary hospital nurses, and understand the predictors of circadian rhythm in this group. Between July and September 2020, 23 hospitals were randomly selected from 113 tertiary hospitals in Hunan Province. Twenty-five percent of the nurses working in each hospital were targeted for selection. 28.1% and 17.6% of nurses reported eveningness type and morningness type, respectively. The scores for emotional exhaustion, depersonalization, and perceived stress of eveningness nurses were higher than those of morningness counterparts. Eveningness nurses also reported a lower sense of personal accomplishment. Risk factors of eveningness included being under 30 years old, never exercising, having the stressors of late-night shifts and career development, higher levels of emotional exhaustion, sleep latency, sleep duration, and hypnotic use. Shifts may be unavoidable for nurses, nevertheless, understanding the predictors and related factors of chronotype for nurses is necessary for nursing educators and managers to develop a reasonable shift system and appropriate measures to assist nurses in adjusting their work.</p>","PeriodicalId":10294,"journal":{"name":"Chronobiology International","volume":" ","pages":"1058-1067"},"PeriodicalIF":2.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141491127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mourad Akaarir, Martina Martorell-Barceló, Bernat Morro, Margalida Suau, Josep Alós, Eneko Aspillaga, Antoni Gamundí, Amalia Grau, Arancha Lana, M Cristina Nicolau, Aina Pons, Rubén V Rial, Marco Signaroli, Margarida Barcelo-Serra
{"title":"Measuring activity-rest rhythms under different acclimation periods in a marine fish using automatic deep learning-based video tracking.","authors":"Mourad Akaarir, Martina Martorell-Barceló, Bernat Morro, Margalida Suau, Josep Alós, Eneko Aspillaga, Antoni Gamundí, Amalia Grau, Arancha Lana, M Cristina Nicolau, Aina Pons, Rubén V Rial, Marco Signaroli, Margarida Barcelo-Serra","doi":"10.1080/07420528.2024.2371143","DOIUrl":"10.1080/07420528.2024.2371143","url":null,"abstract":"<p><p>Most organisms synchronize to an approximately 24-hour (circadian) rhythm. This study introduces a novel deep learning-powered video tracking method to assess the stability, fragmentation, robustness and synchronization of activity rhythms in <i>Xyrichtys novacula</i>. Experimental <i>X. novacula</i> were distributed into three groups and monitored for synchronization to a 14/10 hours of light/dark to assess acclimation to laboratory conditions. Group GP7 acclimated for 1 week and was tested from days 7 to 14, GP14 acclimated for 14 days and was tested from days 14 to 21 and GP21 acclimated for 21 days and was tested from days 21 to 28. Telemetry data from individuals in the wild depicted their natural behavior. Wild fish displayed a robust and minimally fragmented rhythm, entrained to the natural photoperiod. Under laboratory conditions, differences in activity levels were observed between light and dark phases. However, no differences were observed in activity rhythm metrics among laboratory groups related to acclimation period. Notably, longer acclimation (GP14 and GP21) led to a larger proportion of individuals displaying rhythm synchronization with the imposed photoperiod. Our work introduces a novel approach for monitoring biological rhythms in laboratory conditions, employing a specifically engineered video tracking system based on deep learning, adaptable for other species.</p>","PeriodicalId":10294,"journal":{"name":"Chronobiology International","volume":" ","pages":"959-970"},"PeriodicalIF":2.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141554309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Circadian rhythm in hypertension: Bibliometrics and knowledge mapping from 1990 to 2022.","authors":"Zhimei Peng, Yao Tan, Xuyan Zou, Xinzhou Zhang","doi":"10.1080/07420528.2024.2362972","DOIUrl":"10.1080/07420528.2024.2362972","url":null,"abstract":"<p><p>Recently, research on the circadian rhythm of hypertension has gained popularity. However, few bibliometric analyses have been conducted in this field. In this study, CiteSpace 6.1. R6, VOSviewer 1.6.18, R language (version 4.2.3), R package Bibliometrix (4.1.2), and Microsoft Excel 365 were used to conduct the data mining and knowledge visualization analysis. A total of 1,560 papers from 1,825 institutions in 77 countries were included. Research on the role of circadian rhythms in hypertension is increasing annually. Overall, <i>Chronobiology International</i> published the most literature and <i>Hypertension</i> received the most citations. Ramon Hermida from the Universidade de Vigo in Spain published the most papers and had the most citations. The United States of America and Japan have been the most productive countries. The University of Ferrara, Universidade de Vigo, and the University of California system produced the most publications. Amongst authors, Hermida had the most and longest literature bursts. Keywords such as \"chronic kidney disease,\" \"oxidative stress,\" and \"gene expression\" have been breakout keywords since 2014. This study revealed the dynamic evolution of research on circadian rhythms in hypertension and provides a knowledge base for researchers.</p>","PeriodicalId":10294,"journal":{"name":"Chronobiology International","volume":" ","pages":"971-986"},"PeriodicalIF":2.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141418159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hoi Ching Cheong, Steven Wai Ho Chau, Lee Ying Ng, Ngan Yin Chan, Xie Chen, Flávio Kapczinski, Yun Kwok Wing, Joey W Y Chan
{"title":"Chinese self-report version of biological rhythms interview for assessment in neuropsychiatry (C-BRIAN-SR) - psychometric properties and prospective follow-up in patients with non-seasonal depression.","authors":"Hoi Ching Cheong, Steven Wai Ho Chau, Lee Ying Ng, Ngan Yin Chan, Xie Chen, Flávio Kapczinski, Yun Kwok Wing, Joey W Y Chan","doi":"10.1080/07420528.2024.2373215","DOIUrl":"10.1080/07420528.2024.2373215","url":null,"abstract":"<p><p>This study examined the psychometric properties and longitudinal changes of the self-reporting Traditional Chinese version of Biological Rhythms Interview for Assessment in Neuropsychiatry (C-BRIAN-SR) among healthy controls (HC) and patients with major depressive episode (MDE). Eighty patients with a current MDE and 80 HC were recruited. Assessments were repeated after two weeks in HC, and upon the discharge of MDE patients to examine the prospective changes upon remission of depression. The C-BRIAN-SR score was significantly higher in the MDE than HC group. The concurrent validity was supported by a positive correlation between scores of C-BRIAN-SR, Insomnia Severity Index and the Hospital Anxiety Depression Scale. C-BRIAN-SR negatively correlated MEQ in the MDE group (<i>r</i> = .30, <i>p</i> = 0.009), suggesting higher rhythm disturbances were associated with a tendency toward eveningness. A moderate test-retest reliability was found (<i>r</i> = .61, <i>p</i> < 0.001). A cut-off of 38.5 distinguished MDE subjects from HC with 82.9% of sensitivity and 81.0% of specificity. C-BRIAN-SR score normalized in remitted MDE patients but remained higher in the non-remitted. The C-BRIAN-SR is a valid and reliable scale for measuring the biological rhythms and may assist in the screening of patients with MDE.</p>","PeriodicalId":10294,"journal":{"name":"Chronobiology International","volume":" ","pages":"1008-1020"},"PeriodicalIF":2.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141491126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shuang Hu, Fan Wang, Qinte Huang, Yiming Chen, Dongbin Lyu, Ni Zhou, Meiti Wang, Mengke Zhang, Chuchen Xu, Ivo Mueller, Guanqun Yao, Xirui Liu, Qinting Zhang, Wu Hong
{"title":"Eveningness is associated with more severe depressive symptoms independently of sleep quality and fatigue level only in first-episode but not recurrent depression in major depressive disorder.","authors":"Shuang Hu, Fan Wang, Qinte Huang, Yiming Chen, Dongbin Lyu, Ni Zhou, Meiti Wang, Mengke Zhang, Chuchen Xu, Ivo Mueller, Guanqun Yao, Xirui Liu, Qinting Zhang, Wu Hong","doi":"10.1080/07420528.2024.2378958","DOIUrl":"10.1080/07420528.2024.2378958","url":null,"abstract":"<p><p>People with an evening chronotype have an increased risk of experiencing a major depressive disorder (MDD). It is unclear if this effect is predominantly related to the initial development of MDD or also present in recurrent episodes. The current study aimed to investigate if the association between chronotype and depressive severity in MDD patients is comparable in MDD patients with first and recurrent episodes. 386 MDD patients, 70.7% females and aged between 16 and 64, participated in the study. The Morningness - Eveningness Questionnaire (MEQ), Pittsburgh Sleep Quality Index (PSQI), Multidimensional Fatigue Inventory (MFI20), and Quick Inventory of Depressive Symptomatology (QIDS-SR16) were administered to participants to determine chronotype, sleep quality, fatigue level, and depressive severity, respectively. Multivariate regression models were utilized to analyze how chronotype influences depressive severity. The study showed that chronotype, sleep quality, and fatigue level were all associated with depressive severity. Eveningness significantly predicted an increase in depressive severity independently of sleep quality and fatigue level only in patients with the first episode (-0.068, <i>p</i> = 0.010), but not in patients with recurrent episodes (0.013, <i>p</i> = 0.594). Circadian-focused treatment should be considered in first-episode depression only.</p>","PeriodicalId":10294,"journal":{"name":"Chronobiology International","volume":" ","pages":"987-995"},"PeriodicalIF":2.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141615945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Julien Coelho, Jean-Arthur Micoulaud-Franchi, Emmanuel D'incau, Patrice Bourgin, Claude Gronfier, Damien Leger, Paul Galvez, Pierre Philip, Jacques Taillard
{"title":"Validation of the French version of the Munich ChronoType questionnaire and associations between chronotype and physiological parameters.","authors":"Julien Coelho, Jean-Arthur Micoulaud-Franchi, Emmanuel D'incau, Patrice Bourgin, Claude Gronfier, Damien Leger, Paul Galvez, Pierre Philip, Jacques Taillard","doi":"10.1080/07420528.2024.2362309","DOIUrl":"10.1080/07420528.2024.2362309","url":null,"abstract":"<p><p>Assessing chronotype is essential in clinical and research environments, but the Munich ChronoType Questionnaire (MCTQ), a widely utilised tool, is not available in French. Therefore, we carried out an observational monocentric study to validate the French MCTQ against the sleep diary for sleep schedules, the Morningness-Eveningness Questionnaire (MEQ) for chronotype, and polysomnography measures. We utilised the mid-sleep point on free days (MSF), adjusted for sleep debt (MSFsc), to gauge morningness/eveningness. The study included 80 participants (average age: 40.9 years, 50% female). The sleep schedules determined by the MCTQ and the sleep diary showed a high correlation. The MSFsc demonstrated a significant correlation with the MEQ, persisting even under sleep constraints such as an alarm on free days. The predictive accuracy was strong for a morning chronotype and moderate for an evening chronotype as assessed using the MEQ. In summary, the French MCTQ is a reliable tool for researchers and clinicians for assessing sleep schedules and chronotype in French-speaking populations. The MSFsc can effectively predict chronotype, even under sleep constraints. However, for the evening chronotype, self-assessment appears to be more accurate. The association with polysomnography measures enriches our understanding of the chronotype at the intersection of behaviour and physiology.</p>","PeriodicalId":10294,"journal":{"name":"Chronobiology International","volume":" ","pages":"996-1007"},"PeriodicalIF":2.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141300177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vladimir B Dorokhov, Alexandra N Puchkova, Dmitry E Shumov, Eugenia O Gandina, Anton O Taranov, Natalya V Ligun, Dmitry S Sveshnikov, Elena B Yakunina, Olga V Mankaeva, Arcady A Putilov
{"title":"The yin and yang of two opponent processes of sleep-wake regulation: Sex-associated differences in the spectral EEG markers of the drives for sleep and wake.","authors":"Vladimir B Dorokhov, Alexandra N Puchkova, Dmitry E Shumov, Eugenia O Gandina, Anton O Taranov, Natalya V Ligun, Dmitry S Sveshnikov, Elena B Yakunina, Olga V Mankaeva, Arcady A Putilov","doi":"10.1080/07420528.2024.2378007","DOIUrl":"10.1080/07420528.2024.2378007","url":null,"abstract":"<p><p>Although objectively measured characteristics of sleep efficiency and quality were found to be better in women than men, women more frequently than men suffer from poor or insufficient or non-restorative sleep. We explored this apparent paradox by testing the sex-associated differences in electroencephalographic (EEG) indicators of two opponent processes of sleep-wake regulation, the drives for sleep and wake. We tried to provide empirical support for the hypothesis that a stronger women's sleep drive can explain better objective characteristics of sleep quality in women than men, while a stronger women's wake drive can be an explanation of a higher frequency of sleep-related complaints in women than men. To our knowledge, this was the first attempt to examine the associations of sex with scores on the 1<sup>st</sup> and 2<sup>nd</sup> principal components of the EEG spectrum that can serve as objective spectral EEG markers of the opponent drives for sleep and wake, respectively. The particular prediction was that, in women compared to men, not only the 1<sup>st</sup> principal component score but also the 2<sup>nd</sup> principal component score could be higher (i.e. both drives could be stronger). In a sample of 80 university students (40 females), the EEG signals were recorded during 160 afternoon napping attempts (50 min or longer). The difference between male and female students in sleep latencies did not reach a statistically significant level. In accordance with our prediction, both principal component scores were found to be higher in female than in male students irrespective of sleep stage. It is likely that the influence of the wake drive is entirely overlooked in the polysomnographic studies due to the predominant contribution of the indicators of the sleep drive to the conventional objective characteristics of sleep quality. Therefore, a stronger women's sleep drive can be an explanation of women's better sleep quality in the results of polysomnographic studies. On the other hand, if a stronger women's wake drive can influence the perception of their sleep quality, this can explain their more frequent sleep-related complaints.</p>","PeriodicalId":10294,"journal":{"name":"Chronobiology International","volume":" ","pages":"1046-1057"},"PeriodicalIF":2.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141615989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eryka Maria Dos Santos Alves, Fernando Wesley Cavalcanti de Araújo, Pierre Castro Soares, Laura Alexia Ramos da Silva, Daniel Nunes de Araújo Gonçalves, Elizabeth do Nascimento
{"title":"Reestablishment of <i>ad libitum</i> feeding following partial food deprivation: Impact on locomotor activity, visceral fat, food intake, and circadian glycemic curve.","authors":"Eryka Maria Dos Santos Alves, Fernando Wesley Cavalcanti de Araújo, Pierre Castro Soares, Laura Alexia Ramos da Silva, Daniel Nunes de Araújo Gonçalves, Elizabeth do Nascimento","doi":"10.1080/07420528.2024.2361143","DOIUrl":"10.1080/07420528.2024.2361143","url":null,"abstract":"<p><p>Food deprivation has been associated with the development of metabolic pathologies. Few studies have explored the repercussions of a partial food deprivation following the reestablishment of an <i>ad libitum</i> diet. This study investigates the impact of a partial food deprivation (an 8-hour food intake restriction coupled with a 4-hour feeding window during the active phase) and the subsequent return to <i>ad libitum</i> feeding on the glycemic curve, food intake, and locomotor behavior. Wistar rats aged 45 days were subjected to 6 weeks of a partial food deprivation followed by 6 weeks of <i>ad libitum</i> feeding. Body weight, visceral fat, food intake, circadian glycemia, oral glucose tolerance, and locomotor activity were evaluated. It was found that the partial food deprivation resulted in the reduction of both the body weight and food intake; however, it increased visceral fat by 60%. Circadian glycemic values were altered at all intervals during the light phase, and glucose sensitivity improved at 60 minutes in the oral glucose tolerance test (OGTT). In the food-deprived group, the locomotor activity rhythm was reduced, with an observed delay in the peak of activity, reduction in total activity, and a decrease in the rhythmicity percentage. After the reestablishment of the <i>ad libitum</i> feeding, there was recovery of body weight, no difference in visceral fat, normalization of the food intake pattern, circadian glycemia, and oral glucose tolerance. Additionally, the return to <i>ad libitum</i> feeding restored locomotor activity, although the duration required for its complete recovery warrants further investigation. In conclusion, partial food deprivation induces physio-metabolic changes in rats, most of which are reversed after reestablishing <i>ad libitum</i> feeding.</p>","PeriodicalId":10294,"journal":{"name":"Chronobiology International","volume":" ","pages":"941-958"},"PeriodicalIF":2.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141283098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of the lunar cycle on ecosystem and heterotrophic respiration in a boreal <i>Sphagnum</i>-dominated peatland.","authors":"Victor L Mironov, Elizaveta V Linkevich","doi":"10.1080/07420528.2024.2365825","DOIUrl":"10.1080/07420528.2024.2365825","url":null,"abstract":"<p><p>The growth of <i>Sphagnum</i> is influenced by the lunar cycle, which suggests a corresponding carbon (C) accumulation rhythm in peatlands. However, this rhythm can only occur if C accumulation from <i>Sphagnum</i> growth is not offset by its total losses through respiration and other processes. To address the uncertainty, through correlation-regression analysis we examine the influence of the lunar cycle on recent measurements of ecosystem (ER) and heterotrophic (Rh) respiration conducted by Järveoja and colleagues on the oligotrophic peatland of Degerö Stormyr. We found that ER and Rh accelerated near the full moon and slowed down near the new moon. The response of the hourly ER to the lunar cycle is significant from 22:00 to 8:00 and is not significant beyond this range. This response was concentrated in the initial and finished phases of the season, but during the middle of the season it disappeared. This behavior could potentially be caused by the high sensitivity of the <i>Sphagnum</i> cover to moonlight, as well as the sensitivity to the lunar cycle of only the nocturnal component ER. During most of the day, the lunar cycle had a significant effect on hourly Rh, with the highest impact observed between 5:00 and 10:00 and at 20:00. The greatest impact occurs during those hours when ER declines, and possibly <i>Sphagnum</i> photosynthetic productivity peaks. The findings suggest a circalunar rhythm of C accumulation in peatlands due to the opposite trends between C accumulation during <i>Sphagnum</i> growth and C losses with respiration during the lunar cycle.</p>","PeriodicalId":10294,"journal":{"name":"Chronobiology International","volume":" ","pages":"929-940"},"PeriodicalIF":2.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141418160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}