Working “out-of-phase” with reference to chronotype compromises sleep quality in police officers

Yadav, Arjita; Rani, Sangeeta; Singh, Sanjeet Kumar

doi:10.3109/07420528.2015.1121876

Cited by 16 publications

(14 citation statements)

References 33 publications

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“…Further support in the relationship of matching chronotype to shift timing was found in the studies focused on sleep characteristics 20 , 45 , 47 , 48 , 49 ) . The research strongly supported chronotype misaligned with shift timing was associated with decreased sleep duration and quality 20 , 48 ) . In fact, Juda et al ’s 20 ) data analysis supported ET workers matched with evening shift reported longer sleep duration than MT workers on the same shift.…”

Section: Discussionmentioning

confidence: 78%

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Identifying shift worker chronotype: implications for health

Hittle

Gillespie

2018

INDUSTRIAL HEALTH

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Shift workers are at risk for developing serious health issues due to short sleep. One cause of short sleep is circadian misalignment: sleep time is not synchronized with the body’s natural circadian rhythms. Although circadian rhythms are strongly driven by the light/dark cycle, humans have individualized sleep time preferences (chronotypes) based on genetics, development, and external influences. Evening chronotype individuals fall asleep later than average and have a higher risk for developing various noncommunicable diseases. What is unclear is the association between chronotype, shift work, and risks for acquiring chronic conditions. This review is focused on shift worker chronotype and associations with obesity. Because of the paucity of research, other health issues connected with circadian misalignment were included, allowing for a total of 21 research studies. Evidence from this review supports chronotype and certain health issues are associated with shift work, even after adjusting for short sleep duration. In addition, there is evidence to support future research on how shift worker chronotype matched with shift timing impacts worker health. Through better understanding of this interface, occupational health providers can provide more comprehensive worker education on the risks associated with shift work and sleep disturbances.

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Section: Discussionmentioning

confidence: 78%

“…In addition, older workers reported decreased sleep duration and quality, regardless of shift timing. In studying police officers in India, Yadav et al 48 ) found participants had decreased sleep duration and quality when working shifts misaligned with their identified chronotype.…”

Section: Resultsmentioning

confidence: 99%

Identifying shift worker chronotype: implications for health

Hittle

Gillespie

2018

INDUSTRIAL HEALTH

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“…Police officers who were poor sleepers experienced significant improvements in their sleep quality when they were allowed to work "in phase" with their chronotype (i.e. morning or evening shifts) (Yadav et al 2016). This indicates that a discrepancy between an individual's chronotype and social obligations, which is more likely to occur in evening types, is related to poor sleep quality (Yadav et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…morning or evening shifts) (Yadav et al 2016). This indicates that a discrepancy between an individual's chronotype and social obligations, which is more likely to occur in evening types, is related to poor sleep quality (Yadav et al 2016). Subsequently, insufficient sleep leads to worsened mood and decreased ability to regulate negative emotions (Baum et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Chronotype and depressive symptoms in students: An investigation of possible mechanisms

Kivelä

Antypa

2018

Chronobiology International

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Individuals with an evening chronotype are at increased risk of experiencing emotional problems, including depressive symptoms. However, the mechanisms underlying these associations remain unclear. The present study aimed to determine whether poor sleep quality, substance use and cognitive emotion regulation difficulties - which have been implicated in the etiology of depression - mediate the relationship between chronotype and depressive symptoms in a student sample, which was assessed cross-sectionally and after 1 year. A total of 742 Dutch students (75% women, mean age 21.4 ± 2.9 years) completed the Quick Inventory of Depressive Symptomatology, the Morningness-Eveningness Questionnaire, the Pittsburgh Sleep Quality Index, a questionnaire assessing alcohol, caffeine, tobacco and cannabis use, the Cognitive Emotion Regulation Questionnaire and the Behavioral Inhibition/Activation Scale. A subsample (n = 115) was assessed 1 year later with the same questionnaires. Cross-sectional analyses showed that evening chronotype was associated with more depressive symptoms, adjusted for age and gender (β = -0.082, p = 0.028). The relationship between eveningness and depressive symptoms was mediated by sleep quality, alcohol consumption and the cognitive emotion regulation strategies of self-blame and positive reappraisal. In longitudinal analyses, eveningness at baseline predicted more depressive symptoms at follow-up, adjusted for age and gender (β = -0.29, p = 0.002); after additional adjustment for baseline depressive symptoms, chronotype remained a significant predictor of depressive symptoms at T2 (β = -0.16, t = -2.01, p = 0.047). Only poor sleep quality at follow-up was a significant mediator of this relationship. Even though the effect is small in terms of explained variance, eveningness is related to depressive symptoms and this relationship is mediated by poor sleep quality, also in a prospective design. Self-blame and reduced positive reappraisal are correlated with eveningness. Further research is needed to assess the efficacy of chronotherapeutic interventions for the prevention of depression, in addition to sleep education and cognitive approaches.

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“…This scale has the sensitivity of approximately 90% and specificity around 87% to differentiate between good sleepers and poor sleepers. This questionnaire has been used in both original and Hindi version in India [18][19][20][21]. English version of this questionnaire has been validated against polysomnography [21].…”

Section: Measurement Of Sleep Qualitymentioning

confidence: 99%

Prevalence and Predictors of Poor Sleep Quality in Patients on Maintenance Hemodialysis

2017

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Purpose Majority of patients on maintenance hemodialysis complain of poor quality of sleep. Earlier studies show controversial findings with regard to the prevalence and predictors of poor quality of sleep in this group. Hence, the present study was planned. Methods Adult subjects undergoing maintenance hemodialysis were included in this study. Their demographic data, history regarding chronic kidney disease, comorbidities, and details related to hemodialysis were recorded. Sleep quality was assessed using Pittsburg Sleep Quality Index. A total of 201 patients were included in this study. Results Average age of the subjects was 54.7 ± 15.1 years and duration of kidney disease was 37.1 ± 19.8 years. 40.3% subjects were women and 50.7% of sample complained of poor quality sleep. Poor sleepers had less than 3/week dialysis (68.6% among poor sleepers vs. 21.2% among good sleepers; P \ 0.001), nighttime dialysis shift (52.9 vs. 20.2% among good sleepers; P \ 0.001), diabetes mellitus (56.9 vs. 39.4% among good sleepers; P = 0.01), and hypnotic use (P \ 0.001). Similarly, subjects with poor sleep quality were older (57.3 ± 14.3 vs. 52.1 ± 15.4 years among good sleepers; P = 0.01). Binomial logistic regression showed that less than thrice a week dialysis and schedule of maintenance hemodialysis predicted the poor sleep quality. Less than 3/week dialysis increased the odds for poor sleep by 6.6 (P \ 0.001) and afternoon and nighttime maintenance hemodialysis shift by 3.2 (P \ 0.001) and 4.6 (P \ 0.001), respectively. Conclusion Poor sleep is a common complaint in patients on hemodialysis. We found that the evening or night shift of hemodialysis and twice weekly hemodialysis worsened the quality of sleep.

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Working “out-of-phase” with reference to chronotype compromises sleep quality in police officers

Cited by 16 publications

References 33 publications

Identifying shift worker chronotype: implications for health

Identifying shift worker chronotype: implications for health

Chronotype and depressive symptoms in students: An investigation of possible mechanisms

Prevalence and Predictors of Poor Sleep Quality in Patients on Maintenance Hemodialysis

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