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Tortello C, Folgueira A, Lopez JM, Didier Garnham F, Sala Lozano E, Rivero MS, Simonelli G, Vigo DE, Plano SA. Chronotype delay and sleep disturbances shaped by the Antarctic polar night. Sci Rep 2023; 13:15957. [PMID: 37743400 PMCID: PMC10518309 DOI: 10.1038/s41598-023-43102-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 09/19/2023] [Indexed: 09/26/2023] Open
Abstract
Chronotype is a reliable biomarker for studying the influence of external zeitgebers on circadian entrainment. Assessment of chronotype variation in participants exposed to extreme photoperiods may be useful to investigate how changes in light-dark cycle modulate the circadian system. This study aimed to examine chronotype and sleep changes during a winter campaign at the Argentine Antarctic station Belgrano II. A sample of 82 men who overwintered in Antarctica completed the Munich Chronotype Questionnaire during March (daylight length: 18.6 h), May (daylight length: 2.8 h), July (daylight length: 0 h), September (daylight length: 14.5 h), November (daylight length: 24 h). The main results showed a decrease in sleep duration and a delay in chronotype and social jetlag during the polar night, highlighting the influence of social cues and the impact of the lack of natural light on circadian rhythms.
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Affiliation(s)
- C Tortello
- Chronophysiology Lab, Institute for Biomedical Research (BIOMED), Pontifical Catholic University of Argentina (UCA), National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina
| | - A Folgueira
- Health Department of Armed Force Personnel, Ministry of Defense, Buenos Aires, Argentina
| | - J M Lopez
- Argentine Joint Command, Buenos Aires, Argentina
| | | | - E Sala Lozano
- Argentine Antarctic Institute, Buenos Aires, Argentina
| | - M S Rivero
- Argentine Joint Command, Buenos Aires, Argentina
| | - G Simonelli
- Département de Médecine, Faculté de Médecine, Université de Montréal, Montreal, Canada
- Département de Neurosciences, Faculté de Médecine, Université de Montréal, Montreal, Canada
- Centre d'études Avancées en Médecine du Sommeil, Hôpital du Sacré-Coeur de Montréal, CIUSSS NÎM, Montreal, Canada
| | - D E Vigo
- Chronophysiology Lab, Institute for Biomedical Research (BIOMED), Pontifical Catholic University of Argentina (UCA), National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina.
- Faculty of Psychology and Educational Sciences, Katholieke Universiteit Leuven, Leuven, Belgium.
| | - S A Plano
- Chronophysiology Lab, Institute for Biomedical Research (BIOMED), Pontifical Catholic University of Argentina (UCA), National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina.
- Chronobiology Lab, Department of Science and Technology, National University of Quilmes (UNQ), Buenos Aires, Argentina.
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2
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Roman P, Perez-Cayuela I, Gil-Hernández E, Rodriguez-Arrastia M, Aparicio-Mota A, Ropero-Padilla C, Rueda-Ruzafa L. Influence of Shift Work on The Health of Nursing Professionals. J Pers Med 2023; 13:jpm13040627. [PMID: 37109012 PMCID: PMC10144026 DOI: 10.3390/jpm13040627] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/10/2023] [Accepted: 03/30/2023] [Indexed: 04/05/2023] Open
Abstract
Shift work is increasingly common in health services, subjecting healthcare professionals to work schedules that can alter circadian rhythms and eating habits with consequent repercussions for the intestinal homeostasis. The objective of this study was to describe the relationship of rotating work shifts with the intestinal health, sleep quality, and emotional dimension of nursing professionals. In March and May 2019, an observational and comparative study was conducted among 380 nursing professionals from different Spanish cities and divided into fixed shift (n = 159) and rotating shift (n = 221). To carry out the present work, the variables measured were gastrointestinal symptoms, stool consistency and shape, anxiety, depression, sleep, as well as stress and work environment. Nurses with rotating shifts reported more abdominal pain and symptoms of depersonalization, as well as worse sleep efficiency and worse nursing practice environment. In addition, overall scores of the Gastrointestinal Symptom Rating Scale and Hospital Anxiety and Depression Scale were found to be significantly worse in nurses with these shifts. Rotating shift work by nursing staff may be associated with the occurrence of gastrointestinal and anxiety-related symptoms. These findings, together with the presence of negative and insensitive attitudes towards patients by nurses on rotating shifts, should be considered to maintain the quality of healthcare.
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Affiliation(s)
- Pablo Roman
- Faculty of Health Sciences, Department of Nursing, Physiotherapy and Medicine, University of Almeria, 04120 Almeria, Spain
- Health Research Center CEINSA, University of Almería, 04120 Almeria, Spain
| | - Isabel Perez-Cayuela
- Faculty of Health Sciences, Department of Nursing, Physiotherapy and Medicine, University of Almeria, 04120 Almeria, Spain
| | | | - Miguel Rodriguez-Arrastia
- Faculty of Health Sciences, Department of Nursing, Physiotherapy and Medicine, University of Almeria, 04120 Almeria, Spain
| | - Adrian Aparicio-Mota
- Andalusian Public Foundation for Biomedical Research in Eastern Andalusia (FIBAO), University Hospital Torrecárdenas, 04009 Almeria, Spain
| | - Carmen Ropero-Padilla
- Faculty of Health Sciences, Department of Nursing, Physiotherapy and Medicine, University of Almeria, 04120 Almeria, Spain
| | - Lola Rueda-Ruzafa
- Faculty of Health Sciences, Department of Nursing, Physiotherapy and Medicine, University of Almeria, 04120 Almeria, Spain
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3
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Ansu Baidoo V, Knutson KL. Associations between circadian disruption and cardiometabolic disease risk: A review. Obesity (Silver Spring) 2023; 31:615-624. [PMID: 36750239 PMCID: PMC9974590 DOI: 10.1002/oby.23666] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 11/23/2022] [Accepted: 11/29/2022] [Indexed: 02/09/2023]
Abstract
The human circadian system plays a vital role in many physiological processes, and circadian rhythms are found in virtually all tissues and organs. The disruption of circadian rhythms may lead to adverse health outcomes. Evidence from recent population-based studies was reviewed because they represent real-world behavior and can be useful in developing future studies to reduce the risk of adverse health conditions, including cardiovascular diseases, obesity, and diabetes mellitus, which may occur because of circadian disruption. An electronic search in PubMed and Web of Science (2012-2022) was performed. Selected articles were based on specific inclusion and exclusion criteria. Five factors that may disrupt circadian rhythm alignment are discussed: shift work, late chronotype, late sleep timing, sleep irregularity, and late meal timing. Evidence from observational studies of these circadian disruptors suggests potential detrimental effects on cardiometabolic health, including higher BMI/obesity, higher blood pressure, greater dyslipidemia, greater inflammation, and diabetes. Future research should identify the specific underlying pathways in order to mitigate the health consequences of shift work. Furthermore, optimal sleep and mealtimes for metabolic health can be explored in intervention studies. Lastly, it is important that the timing of external environmental cues (such as light) and behaviors that influence circadian rhythms are managed.
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Affiliation(s)
- Velarie Ansu Baidoo
- Center for Circadian and Sleep Medicine, Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Kristen L Knutson
- Center for Circadian and Sleep Medicine, Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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4
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Sooriyaarachchi P, Jayawardena R, Pavey T, King NA. Shift work and the risk for metabolic syndrome among healthcare workers: A systematic review and meta-analysis. Obes Rev 2022; 23:e13489. [PMID: 35734805 PMCID: PMC9539605 DOI: 10.1111/obr.13489] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 06/09/2022] [Accepted: 06/09/2022] [Indexed: 11/27/2022]
Abstract
Shift work, defined as work occurring outside typical daytime working hours, is associated with an increased risk for metabolic syndrome (MetS) due to several biological and environmental changes. The MetS refers to the clustering of several known cardiovascular risk factors, including insulin resistance, obesity, dyslipidemia, and hypertension. This systematic review aims to evaluate the literature on the association between shift work and the risk of MetS in employees of the health sector. A systematic search was conducted in PubMed, Web of Science, and Scopus databases using appropriate keywords for studies published before September 1, 2021. Eligible studies were those that compared the prevalence of MetS between day and shift healthcare workers; had a cross-sectional, case-control, or cohort study design; provided sufficient data for calculating odds ratios or relative risks with 95% confidence intervals; and articles in English. The Joanna Briggs Institute prevalence critical appraisal tool was used for quality analysis. Risk for MetS and related measures of effect size were retrieved from studies for meta-analysis. Twelve studies met the criteria for inclusion in the review and meta-analysis. Sample sizes ranged from 42 to 738, and the age range of subjects was between 18 and 65 years. Ten studies demonstrated high methodological quality, while two studies were of average quality. Ten out of 12 studies in the review demonstrated a higher risk in shift workers for developing MetS than day workers. The pooled OR of MetS in shift workers based on 12 studies was 2.17 (95% CI = 1.31-3.60, P = 0.003; I2 = 82%, P < 0.001). Shift workers exhibited more than a twofold increase in the chance of developing MetS in comparison with day workers.
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Affiliation(s)
- Piumika Sooriyaarachchi
- School of Exercise and Nutrition Sciences, Faculty of Health, Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,Health and Wellness Unit, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Ranil Jayawardena
- School of Exercise and Nutrition Sciences, Faculty of Health, Queensland University of Technology (QUT), Brisbane, Queensland, Australia.,Department of Physiology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Toby Pavey
- School of Exercise and Nutrition Sciences, Faculty of Health, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
| | - Neil A King
- School of Exercise and Nutrition Sciences, Faculty of Health, Queensland University of Technology (QUT), Brisbane, Queensland, Australia
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5
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Ehichioya DE, Tahajjul Taufique SK, Anigbogu CN, Jaja SI. Effect of rapid eye movement sleep deprivation during pregnancy on glucocorticoid receptor regulation of HPA axis function in female offspring. Brain Res 2022; 1781:147823. [PMID: 35151654 DOI: 10.1016/j.brainres.2022.147823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 01/29/2022] [Accepted: 02/04/2022] [Indexed: 12/24/2022]
Abstract
Poor maternal sleep quality during the different phases of pregnancy acts as a prenatal stress and is critical for fetal development. Despite the potential adverse effects of maternal stress on the behavior and physiology of the offspring, the mechanisms remain poorly understood. The present study investigates the effects of maternal sleep deprivation (SD) at different stages of pregnancy on the hypothalamic-pituitary-adrenal (HPA) axis in female offspring. The pregnant rats were subjected to sleep deprivation of 12 h per day at different stages; early (ESD), mid (MSD), and late (LSD) stages, on pregnancy days 1-7, 8-14, and 14-20, respectively. At postnatal day 60, levels of corticosterone (CORT), hypothalamic corticotropin-releasing factor receptor 1 (CRF-R1), and hippocampal glucocorticoid receptors (GR) were evaluated in the offspring. Although the hypothalamic CRF-R1 level was increased in the offspring of SD dams, immunohistochemical staining showed reduced immunoreactivity of GR in ESD and LSD offspring hippocampal area. Altogether, the data suggests that a critical period for adverse effects of SD on the HPA axis in female offspring of Wistar rats may be during early and late pregnancy.
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Affiliation(s)
- David E Ehichioya
- Department of Physiology, School of Basic Medical Sciences, Babcock University, Ilishan-Remo, Ogun State, Nigeria; Department of Physiology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Lagos, Nigeria.
| | - S K Tahajjul Taufique
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Chikodi N Anigbogu
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Smith I Jaja
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Lagos, Nigeria
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6
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Ahmadi SA, Tranmer JE, Ritonja JA, Flaten L, Topouza DG, Duan QL, Durocher F, Aronson KJ, Bhatti P. DNA methylation of circadian genes and markers of cardiometabolic risk in female hospital workers: An exploratory study. Chronobiol Int 2022; 39:735-746. [PMID: 35109725 DOI: 10.1080/07420528.2022.2032729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Night shift work has been linked to increased risk of cardiovascular disease (CVD); however, the underlying mechanisms remain unclear. A compelling yet understudied mechanism involves differential DNA methylation of circadian genes. To investigate the relevance of this mechanism, we conducted an exploratory cross-sectional study of 74 female hospital personnel (38 day workers, 36 night shift workers). Sociodemographic, lifestyle, and health characteristics as well as shift work status and history were determined through self-report. Fasting blood samples were collected to measure markers of cardiometabolic risk and DNA was extracted to measure DNA methylation of 1150 cytosine-guanine (CpG) sites across 22 circadian genes. Associations between methylation levels at individual CpG sites (β-values) and markers of cardiometabolic risk were analyzed while considering effect modification by shift work status. The false discovery rate was applied to account for multiple comparisons (q ≤ 0.20). Two CpG sites [cg06758649 (CRY1) and cg06899802 (CSNK1A1)] were differentially associated with waist circumference and body mass index by shift work status, and eight CpG sites [cg26103512 (CSNK1D), cg03941313 (CSNK1E), cg18217763 (CSNK1E), cg16682686 (DEC1), cg12061096 (RORA), cg10133825 (RORA), cg19652148 (RORA), and cg22904654 (RORA)] were differentially associated with LDL cholesterol concentration by shift work status (all q ≤ 0.20). Our findings suggest that the relationship between DNA methylation of circadian genes and cardiometabolic risk differs by day and night shift worker status, which may contribute to mechanisms of increased risk of CVD observed among night shift workers.
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Affiliation(s)
- Salman A Ahmadi
- Department of Public Health Sciences, Queen's University, Kingston, ON, Canada
| | - Joan E Tranmer
- Department of Public Health Sciences, Queen's University, Kingston, ON, Canada.,School of Nursing, Queen's University, Kingston, ON, Canada
| | - Jennifer A Ritonja
- Department of Public Health Sciences, Queen's University, Kingston, ON, Canada
| | - Lisa Flaten
- Department of Public Health Sciences, Queen's University, Kingston, ON, Canada
| | - Danai G Topouza
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada
| | - Qing Ling Duan
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada.,School of Computing, Queen's University, Kingston, ON, Canada
| | - Francine Durocher
- Chu de Québec-Université Laval Research Center (Endocrinology and Nephrology Division), Université Laval Cancer Research Center and Department of Molecular Medicine, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - Kristan J Aronson
- Department of Public Health Sciences, Queen's University, Kingston, ON, Canada.,Division of Cancer Care and Epidemiology, Cancer Research Institute, Queen's University, Kingston, ON, Canada
| | - Parveen Bhatti
- Cancer Control Research, BC Cancer, Vancouver, BC, Canada
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7
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Golding H, Ritonja JA, Day AG, Aronson KJ, Tranmer J. Modeling the relationship between shift work and cardiometabolic risk through circadian disruption, sleep and stress pathways. Chronobiol Int 2022; 39:704-713. [PMID: 35100920 DOI: 10.1080/07420528.2022.2032124] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The purpose of this study is to elucidate the multiple pathways linking shift work exposure to cardiometabolic risk (CMR) through the intermediates of circadian disruption, sleep disturbances, and stress. A cross-sectional study was conducted at Kingston Health Sciences Center that included female hospital workers, 160 who worked a day-only schedule and 168 who worked rotating days and nights. Participants completed questionnaires, a clinical exam, and wore accelerometers to collect sleep data for 8 days. Participants also collected urine samples at each void during a 24-h collection period, on the day shift for day-only workers and the night shift for rotating shift workers, for cortisol and melatonin measures. We adapted and tested a conceptual model proposed by Knutsson and Boggild for circadian disruption, sleep, and stress mechanistic pathways linking shift work to CMR using structural equation modeling techniques. Status as a rotating shift worker was associated with increased circadian disruption of cortisol and melatonin production compared to day-only workers (P < .001). Increased circadian disruption was associated with an increased CMR (P = .01). Rotating shift work was associated with sleep disturbances (P = .002) and increased job stress (P < .001), but neither was associated with CMR. We conclude that rotating shift work is associated indirectly with increased CMR. This association is mediated by circadian disruption as indicated by attenuated melatonin and cortisol, and flatter cortisol curves.
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Affiliation(s)
- Haley Golding
- Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada
| | - Jennifer A Ritonja
- Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada
| | - Andrew G Day
- Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada
| | - Kristan J Aronson
- Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada.,Cancer Research Institute, Queen's University, Kingston, Ontario, Canada
| | - Joan Tranmer
- Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada.,School of Nursing, Queen's University, Kingston, Ontario, Canada
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8
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Night shift work and the risk of metabolic syndrome: Findings from an 8-year hospital cohort. PLoS One 2021; 16:e0261349. [PMID: 34898652 PMCID: PMC8668137 DOI: 10.1371/journal.pone.0261349] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 11/30/2021] [Indexed: 12/03/2022] Open
Abstract
Objectives Studies concerning the risk of metabolic syndrome associated with night work have shown inconsistent findings, due to imprecise working time data and cross-sectional design. We used register-based daily working time data to examine the risk of incident metabolic syndrome associated with night shift work. Methods Working time data collected between 2010 and 2018 of 5775 Taiwanese hospital workers were used to identify night shift workers and to calculate the number of night shifts. Metabolic syndrome was identified by annual occupational health examination results, which were linked to the working time data. Logistic regression models and generalized estimating equations were used to examine the association between night shift work and metabolic syndrome and the 5 components of metabolic syndrome. Results Night shift work is associated with a higher risk of developing metabolic syndrome (adjusted OR = 1.36, 95% CI = 1.04 to 1.78) and high waist circumference (adjusted OR = 1.27, 95% CI = 1.07 to 1.78) compared to day work. Among night shift workers, increased number of night shifts was associated with high blood pressure (adjusted OR = 1.15, 95% CI = 1.01 to 1.31). Conclusions Night shift work is associated with metabolic risk factors. Long-term effects of circadian rhythm disruption on metabolic disturbances needs to be further studied.
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9
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Cortisol and shiftwork: A scoping review. Sleep Med Rev 2021; 64:101581. [DOI: 10.1016/j.smrv.2021.101581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 11/20/2022]
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10
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Charlot A, Hutt F, Sabatier E, Zoll J. Beneficial Effects of Early Time-Restricted Feeding on Metabolic Diseases: Importance of Aligning Food Habits with the Circadian Clock. Nutrients 2021; 13:nu13051405. [PMID: 33921979 PMCID: PMC8143522 DOI: 10.3390/nu13051405] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/17/2021] [Accepted: 04/20/2021] [Indexed: 12/11/2022] Open
Abstract
The importance of metabolic health is a major societal concern due to the increasing prevalence of metabolic diseases such as obesity, diabetes, and various cardiovascular diseases. The circadian clock is clearly implicated in the development of these metabolic diseases. Indeed, it regulates physiological processes by hormone modulation, thus helping the body to perform them at the ideal time of day. Since the industrial revolution, the actions and rhythms of everyday life have been modified and are characterized by changes in sleep pattern, work schedules, and eating habits. These modifications have in turn lead to night shift, social jetlag, late-night eating, and meal skipping, a group of customs that causes circadian rhythm disruption and leads to an increase in metabolic risks. Intermittent fasting, especially the time-restricted eating, proposes a solution: restraining the feeding window from 6 to 10 h per day to match it with the circadian clock. This approach seems to improve metabolic health markers and could be a therapeutic solution to fight against metabolic diseases. This review summarizes the importance of matching life habits with circadian rhythms for metabolic health and assesses the advantages and limits of the application of time-restricted fasting with the objective of treating and preventing metabolic diseases.
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11
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Minelli A, Di Palma M, Rocchi MBL, Ponzio E, Barbadoro P, Bracci M, Pelusi G, Prospero E. Cortisol, chronotype, and coping styles as determinants of tolerance of nursing staff to rotating shift work. Chronobiol Int 2021; 38:666-680. [PMID: 33827343 DOI: 10.1080/07420528.2021.1887883] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Hypothalamo-pituitary-adrenal axis activity and cortisol patterns are likely to play a role in shift work tolerance, i.e., ability to adapt to shift work without suffering stress-related consequences. Yet, the evidence is scanty. Here, salivary cortisol output during night shifts and leisure days was assessed in fast-forward rotating shift work nursing staff (N = 30), and possible links with a series of variables - gender (30% male), age (M = 39.6, SEM = 1.57 y), years of service (M = 12.43, SEM = 1.48 y), BMI (M = 23.29, SEM = 0.66 Kg/m2), self-rated chronotype, sleep quality, and psycho-behavioral factors - were investigated. Main results show that cortisol output during night shifts: i) is larger in morning-oriented chronotypes, thus affected by the circadian misalignment between biological and working rhythms; ii) associates with dysfunctional coping styles at work; iii) positively correlates with diurnal cortisol secretion on leisure days, i.e., individuals with larger cortisol output during shifts display higher cortisol secretion on non-working days. Chronotype and psycho-behavioral factors explain most of the correlational weight linking cortisol output during the night shift and off-days. In conclusion, we confirm salivary cortisol testing as a suitable objective marker of occupational stress and propose it as a valuable index for monitoring shift work tolerance, in combination with chronotype. Moreover, we emphasize the importance of evaluating psycho-behavioral factors in professional settings, because these modifiable variables can be addressed with tailored psychological interventions to ameliorate poor job satisfaction, reduce work-related distress, and avoid chronic cortisol excess experienced by shift workers.
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Affiliation(s)
- Andrea Minelli
- Department of Biomolecular Sciences (DISB), University of Urbino Carlo Bo, Urbino, Italy
| | - Michael Di Palma
- Department of Experimental and Clinical Medicine, Faculty of Medicine and Surgery, Università Politecnica Delle Marche, Ancona, Italy
| | | | - Elisa Ponzio
- Department of Biomedical Sciences and Public Health, Section of Hygiene, Preventive Medicine and Public Health, Università Politecnica Delle Marche, Ancona, Italy
| | - Pamela Barbadoro
- Department of Experimental and Clinical Medicine, Faculty of Medicine and Surgery, Università Politecnica Delle Marche, Ancona, Italy
| | - Massimo Bracci
- Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Gilda Pelusi
- School of Nursing Science, Università Politecnica Delle Marche, Ancona, Italy
| | - Emilia Prospero
- Department of Biomedical Sciences and Public Health, Section of Hygiene, Preventive Medicine and Public Health, Università Politecnica Delle Marche, Ancona, Italy
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12
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Khosravipour M, Khanlari P, Khazaie S, Khosravipour H, Khazaie H. A systematic review and meta-analysis of the association between shift work and metabolic syndrome: The roles of sleep, gender, and type of shift work. Sleep Med Rev 2021; 57:101427. [PMID: 33556868 DOI: 10.1016/j.smrv.2021.101427] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 10/09/2020] [Accepted: 10/15/2020] [Indexed: 12/13/2022]
Abstract
This study was conducted to investigate the association between shift work and metabolic syndrome (MetS) and quantify the roles of sleep, gender, and type of shift work. We searched online databases, including PubMed, Scopus, and Web of Science on November 17, 2019. Of the 821 articles identified, 38 observational studies (27 cross-sectional, 10 cohorts, and one nested case-control), conducted on 128,416 participants, met our eligibility criteria. The pooled Odds ratio (OR) and 95% Confidence interval (CI) of MetS in shift-versus day-workers were estimated as 1.14 (1.07, 1.21) and 1.11 (1.06, 1.17) for the unadjusted and adjusted models. This association remained significant only for the studies with a cross-sectional design. There was a significantly higher odds of MetS in the studies conducted only on females (1.13 [1.06, 1.20]) or males (1.12 [1.02, 1.21]). The pooled adjusted OR (95% CI) for the studies without and with sleep adjustment was calculated as 1.14 (1.08, 1.21) and 1.29 (1.06, 1.52). We observed that rotating shift workers had stronger odds of MetS than the other shift workers. In conclusion, our findings revealed the significant odds of an association between shift work and MetS and different effects for sleep, gender, and type of shift work.
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Affiliation(s)
- Masoud Khosravipour
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Department of Occupational Health Engineering, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran; Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Payam Khanlari
- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran; Department of Ergonomics, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Sepideh Khazaie
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran; Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Hadis Khosravipour
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Habibolah Khazaie
- Sleep Disorders Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
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13
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Ross R, Chaput JP, Giangregorio LM, Janssen I, Saunders TJ, Kho ME, Poitras VJ, Tomasone JR, El-Kotob R, McLaughlin EC, Duggan M, Carrier J, Carson V, Chastin SF, Latimer-Cheung AE, Chulak-Bozzer T, Faulkner G, Flood SM, Gazendam MK, Healy GN, Katzmarzyk PT, Kennedy W, Lane KN, Lorbergs A, Maclaren K, Marr S, Powell KE, Rhodes RE, Ross-White A, Welsh F, Willumsen J, Tremblay MS. Canadian 24-Hour Movement Guidelines for Adults aged 18–64 years and Adults aged 65 years or older: an integration of physical activity, sedentary behaviour, and sleep. Appl Physiol Nutr Metab 2020; 45:S57-S102. [DOI: 10.1139/apnm-2020-0467] [Citation(s) in RCA: 168] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The Canadian Society for Exercise Physiology assembled a Consensus Panel representing national organizations, content experts, methodologists, stakeholders, and end-users and followed an established guideline development procedure to create the Canadian 24-Hour Movement Guidelines for Adults aged 18–64 years and Adults aged 65 years or older: An Integration of Physical Activity, Sedentary Behaviour, and Sleep. These guidelines underscore the importance of movement behaviours across the whole 24-h day. The development process followed the strategy outlined in the Appraisal of Guidelines for Research and Evaluation (AGREE) II instrument. A large body of evidence was used to inform the guidelines including 2 de novo systematic reviews and 4 overviews of reviews examining the relationships among movement behaviours (physical activity, sedentary behaviour, sleep, and all behaviours together) and several health outcomes. Draft guideline recommendations were discussed at a 4-day in-person Consensus Panel meeting. Feedback from stakeholders was obtained by survey (n = 877) and the draft guidelines were revised accordingly. The final guidelines provide evidence-based recommendations for a healthy day (24-h), comprising a combination of sleep, sedentary behaviours, and light-intensity and moderate-to-vigorous-intensity physical activity. Dissemination and implementation efforts with corresponding evaluation plans are in place to help ensure that guideline awareness and use are optimized.Novelty First ever 24-Hour Movement Guidelines for Adults aged 18–64 years and Adults aged 65 years or older with consideration of a balanced approach to physical activity, sedentary behaviour, and sleep Finalizes the suite of 24-Hour Movement Guidelines for Canadians across the lifespan
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Affiliation(s)
- Robert Ross
- School of Kinesiology and Health Studies, Queen’s University, Kingston, ON K7L 3N6, Canada
| | - Jean-Philippe Chaput
- Healthy Active Living and Obesity Research Group, Children’s Hospital of Eastern Ontario Research Institute, Ottawa, ON K1H 8L1, Canada
| | - Lora M. Giangregorio
- Department of Kinesiology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Schlegel-University of Waterloo Research Institute for Aging, University of Waterloo, ON N2J 0E2, Canada
| | - Ian Janssen
- School of Kinesiology and Health Studies, Queen’s University, Kingston, ON K7L 3N6, Canada
| | - Travis J. Saunders
- Department of Applied Human Sciences, University of Prince Edward Island, Charlottetown, PE C1A 4P3, Canada
| | - Michelle E. Kho
- School of Rehabilitation Sciences, McMaster University, Hamilton, ON L8S 1C7, Canada
| | | | - Jennifer R. Tomasone
- School of Kinesiology and Health Studies, Queen’s University, Kingston, ON K7L 3N6, Canada
| | - Rasha El-Kotob
- Department of Kinesiology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- KITE, Toronto Rehabilitation Institute, University Health Network, Toronto, ON M4G 3V9, Canada
| | - Emily C. McLaughlin
- Department of Kinesiology, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Mary Duggan
- Canadian Society for Exercise Physiology, Ottawa, ON K2A 4B1, Canada
| | - Julie Carrier
- Départment de psychologie, Université de Montréal, Montréal, QC H2V 2S9, Canada
| | - Valerie Carson
- Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, AB T6G 2H9, Canada
| | - Sebastien F. Chastin
- School of Health and Life Science, Glasgow Caledonian University, Glasgow, G4 0BA, Scotland
- Department of Movement and Sport Sciences, Ghent University, Belgium, Ghent
| | - Amy E. Latimer-Cheung
- School of Kinesiology and Health Studies, Queen’s University, Kingston, ON K7L 3N6, Canada
| | | | - Guy Faulkner
- School of Kinesiology, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Stephanie M. Flood
- School of Kinesiology and Health Studies, Queen’s University, Kingston, ON K7L 3N6, Canada
| | | | - Genevieve N. Healy
- School of Public Health, University of Queensland, Herston, QLD 4006, Australia
| | | | | | - Kirstin N. Lane
- Canadian Society for Exercise Physiology, Ottawa, ON K2A 4B1, Canada
- School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, BC V8P 5C2, Canada
| | | | - Kaleigh Maclaren
- Canadian Society for Exercise Physiology, Ottawa, ON K2A 4B1, Canada
| | - Sharon Marr
- Department of Medicine, Division of Geriatric Medicine, McMaster University, Hamilton, ON L8S 4L8, Canada
| | | | - Ryan E. Rhodes
- School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Amanda Ross-White
- Queen’s University Library, Queen’s University, Kingston, ON K7L 3N6, Canada
| | - Frank Welsh
- Canadian Public Health Association, Ottawa, ON K1Z 8R9, Canada
| | - Juana Willumsen
- Department of Health Promotion, World Health Organization, Geneva 27, Switzerland
| | - Mark S. Tremblay
- Healthy Active Living and Obesity Research Group, Children’s Hospital of Eastern Ontario Research Institute, Ottawa, ON K1H 8L1, Canada
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Dutheil F, Baker JS, Mermillod M, De Cesare M, Vidal A, Moustafa F, Pereira B, Navel V. Shift work, and particularly permanent night shifts, promote dyslipidaemia: A systematic review and meta-analysis. Atherosclerosis 2020; 313:156-169. [PMID: 33069952 DOI: 10.1016/j.atherosclerosis.2020.08.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/15/2020] [Accepted: 08/26/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIMS Shift work is common worldwide and linked to deleterious cardiovascular effects that might be underlined by dyslipidemia. The aim of this systematic review and meta-analysis is to determine the impact of shiftwork on dyslipidemia. METHODS Searching in PubMed, Cochrane Library, Science Direct and Embase databases without language restriction on 15 February 2020, included studies that describe blood lipids levels or a risk measure in shift workers compared with fixed-day workers (controls). Differences by study-level characteristics were estimated using stratified meta-analysis by type of shift work, and meta-regression to examine relations between dyslipidemia and demographic, lifestyle and work characteristics. Estimates were pooled using random-effect meta-analysis. RESULTS We included a total of 66 articles, representing 197,063 workers. Shift work globally increased the levels of triglycerides (overall SMD = 0.09; 95CI 0.05 to 0.13; p < 0.001), and globally decreased the levels of c-HDL (-0.08; 95CI -0.12 to -0.03; p = 0.001). Permanent night shift workers were an at-risk type of shift for dyslipidemia with significantly higher blood levels of total cholesterol (0.22; 95CI 0.01 to 0.42; p = 0.043) and triglycerides (0.18; 0.03 to 0.33; p = 0.017), and significantly lower blood levels of c-HDL (-0.16; 95CI -0.32 to 0.00; p = 0.05). Permanent night shift workers were more at-risk for total cholesterol than rotating 3 × 8 shift workers (Coefficient 0.22; 95CI 0.01 to 0.42; p = 0.038) and rotating 2 × 12 shift workers (0.24; 0.02 to 0.46; p = 0.037), and more at-risk for triglycerides than rotating day shift workers (0.21; 95CI 0.03 to 0.38; p = 0.023). Results were non-significant for c-LDL, nor depending on type of shifts. CONCLUSIONS Shift work, and particularly permanent night shift, is associated with dyslipidaemia via elevated total cholesterol and triglycerides, and reduced HDL-cholesterol. Our current study provides a practical and valuable strengthening of the evidence-base required for preventive health initiatives and workplace reform.
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Affiliation(s)
- Frédéric Dutheil
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, CHU Clermont-Ferrand, University Hospital of Clermont-Ferrand, Preventive and Occupational Medicine, Witty Fit, F-63000, Clermont-Ferrand, France.
| | - Julien S Baker
- Centre for Health and Exercise Science Research, Department of Sport, Physical Education and Health, Hong Kong Baptist University, Kowloon Tong, Hong Kong
| | - Martial Mermillod
- Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, LPNC, Grenoble, France; Institut Universitaire de France, Paris, France
| | - Mélanie De Cesare
- CHU Clermont-Ferrand, University Hospital of Clermont-Ferrand, Preventive and Occupational Medicine, F-63000, Clermont-Ferrand, France
| | - Alexia Vidal
- CHU Clermont-Ferrand, University Hospital of Clermont-Ferrand, Preventive and Occupational Medicine, F-63000, Clermont-Ferrand, France
| | - Fares Moustafa
- CHU Clermont-Ferrand, University Hospital of Clermont-Ferrand, Emergency Unit, F-63000, Clermont-Ferrand, France
| | - Bruno Pereira
- University Hospital of Clermont-Ferrand (CHU), Clinical Research and Innovation Direction, Clermont-Ferrand, France
| | - Valentin Navel
- Université Clermont Auvergne, CNRS, INSERM, GReD, Translational Approach to Epithelial Injury and Repair, CHU Clermont-Ferrand, University Hospital of Clermont-Ferrand, Ophthalmology, F-63000, Clermont-Ferrand, France
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15
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Ritonja J, Tranmer J, Aronson KJ. The relationship between night work, chronotype, and cardiometabolic risk factors in female hospital employees. Chronobiol Int 2019; 36:616-628. [DOI: 10.1080/07420528.2019.1570247] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jennifer Ritonja
- Department of Public Health Sciences, Queen’s University, Kingston, Ontario, Canada
| | - Joan Tranmer
- Department of Public Health Sciences, Queen’s University, Kingston, Ontario, Canada
- School of Nursing, Queen’s University, Kingston, Ontario, Canada
| | - Kristan J. Aronson
- Department of Public Health Sciences, Queen’s University, Kingston, Ontario, Canada
- Division of Cancer Care and Epidemiology, Cancer Research Institute, Queen’s University, Kingston, Ontario, Canada
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