Improved Sleep Quality and Work Performance Among Shift Workers Consuming a “Foods with Function Claims” Containing Asparagus Extract

The consequences of sleep deprivation and sleepiness have been noted as the most important health problem in our modern society among shift workers. The objective of this study was to investigate the prevalence of sleep disorders and their possible effects on work performance in two groups of Iranian shift workers and nonshift workers. This study was designed as a cross-sectional study. The data were collected by PSQI, Berlin questionnaire, Epworth Sleepiness Scale, Insomnia Severity Index, and RLS Questionnaire. Occupational impact of different sleep disorders was detected by Occupational Impact of Sleep Disorder questionnaire. These questionnaires were filled in by 210 shift workers and 204 nonshift workers. There was no significant difference in the age, BMI, marital status, and years of employment in the two groups. Shift workers scored significantly higher in the OISD. The prevalence of insomnia, poor sleep quality, and daytime sleepiness was significantly higher in shift workers. Correlations between OISD scores and insomnia, sleep quality, and daytime sleepiness were significant. We concluded that sleep disorders should receive more attention as a robust indicator of work limitation.

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Poor Sleep Health and Next Day Work Impairment: The Mediating Role of Fatigue

Innovation in Aging ◽

10.1093/geroni/igaa057.1384 ◽

2020 ◽

Vol 4 (Supplement_1) ◽

pp. 428-429

Author(s):

Breann LaRocque ◽

Christina Mu ◽

Soomi Lee

Keyword(s):

Sleep Quality ◽

Work Performance ◽

Multilevel Models ◽

Poor Sleep ◽

Sleep Health ◽

Work Impairment ◽

Mediating Role ◽

Life Threatening ◽

Healthcare Professions ◽

Ecological Momentary

Abstract Nightly sleep impacts next-day alertness and cognitive functioning. For healthcare professions, work impairment can be life-threatening for patients. Thus, understanding how sleep affects work quality is imperative to promoting medical safety and overall health of workers. The current study investigated whether nightly sleep health is associated with next-day work impairment in nurses and whether this association is mediated by daily fatigue. Sixty nurses reported their sleep characteristics, fatigue, and work impairment using ecological momentary assessment for two weeks. We used a series of multilevel models (a path: sleep→fatigue, b path: fatigue→work impairment, c path: sleep→work impairment, c′ path: sleep and fatigue→work impairment), adjusting for sociodemographics and work shift. At the between-person level, poorer sleep quality was associated with greater work impairment (βc=-23.36, p<.001). This association was mediated by fatigue such that poorer sleep quality was associated with greater fatigue (βa=-19.54, p<.01), which was further associated with greater work impairment (βb=0.79, p<.001). After including fatigue, the association of sleep quality with work impairment was reduced (βc′ =-7.07, p=.08). Similarly, fatigue mediated the relationship between sleep sufficiency and work impairment (βa=-16.49; βb=0.79; βc=-19.36; p<.001; βc′ =-6.32, p=.05). At the within-person level, on days after long sleep duration (>8hrs), nurses reported greater work impairment (βc=10.08, p<.01), however, this was not mediated by fatigue. Our results suggest that poor sleep health may impair next-day work performance, mostly through increased fatigue. Future interventions for nurses can target daily fatigue to reduce the adverse effects of poor sleep on work impairment.

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Personality Traits and Insomnia Symptoms in Shift Workers

Frontiers in Psychology ◽

10.3389/fpsyg.2021.689741 ◽

2021 ◽

Vol 12 ◽

Author(s):

Brigitte Holzinger ◽

Lucille Mayer ◽

Gerhard Klösch

Keyword(s):

Sleep Quality ◽

Personality Traits ◽

Sleep Duration ◽

Total Sleep Time ◽

Sleep Time ◽

Work Schedule ◽

Shift Workers ◽

Time In Bed ◽

Shift Schedules ◽

Insomnia Symptoms

The discrepancy between natural sleep-wake rhythm and actual sleep times in shift workers can cause sleep loss and negative daytime consequences. Irregular shift schedules do not follow a fixed structure and change frequently, which makes them particularly harmful and makes affected individuals more susceptible to insomnia. The present study compares insomnia symptoms of non-shift workers, regular shift workers, and irregular shift workers and takes into account the moderating role of the Big Five personality traits and levels of perfectionism. Employees of an Austrian railway company completed an online survey assessing shift schedules, sleep quality and duration, daytime sleepiness, and personality traits. A total of 305 participants, of whom 111 were non-shift workers, 60 regular shift workers, and 134 irregular shift workers, made up the final sample. Irregular shift workers achieved significantly worse scores than one or both of the other groups in time in bed, total sleep time, sleep efficiency, sleep duration, sleep quality, sleep latency, and the number of awakenings. However, the values of the irregular shifts workers are still in the average range and do not indicate clinical insomnia. Participants working regular shifts reported the best sleep quality and longest sleep duration and showed the least nocturnal awakenings, possibly due to higher conscientiousness- and lower neuroticism scores in this group. Agreeableness increased the effect of work schedule on total sleep time while decreasing its effect on the amount of sleep medication taken. Perfectionism increased the effect of work schedule on time in bed and total sleep time. Generalization of results is limited due to the high percentage of males in the sample and using self-report measures only.

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Serotonin variations and sleep disorders among shift workers. A cross-sectional study

Toxicology and Industrial Health ◽

10.1177/07482337211033135 ◽

2021 ◽

pp. 074823372110331

Author(s):

Rehab Shehata Abdelhady Shehata ◽

Zeinab Ahmed Mohamed Nour ◽

Amul Mohamed Abdelrahim Badr ◽

Eman Mahmoud Khalifa

Keyword(s):

Sleep Quality ◽

Shift Work ◽

Night Shift ◽

Cross Sectional Study ◽

Poor Sleep ◽

Serotonin Level ◽

Poor Sleep Quality ◽

Cross Sectional ◽

Shift Workers ◽

Blood Serotonin

Sleep disorders are prevalent occupational health problems among shift workers, especially healthcare workers with long shifts. Serotonin is a neurotransmitter related to circadian variations accompanied by shift work. A cross-sectional study was performed on 73 nurses at a tertiary hospital in Cairo, Egypt, to assess sleep quality among shift work nurses (SWNs), to determine blood serotonin level, and its relation to shift work and sleep quality. A demographic and occupational history questionnaire, Pittsburgh Sleep Quality Index (PSQI) questionnaire, and measurement of blood serotonin were carried out to the studied group. The data were analyzed using SPSS 25, and descriptive statistics, unpaired t-test, ANOVA, Kruskal–Wallis Test, Chi-square, Spearman correlation, and multivariate regression analysis were utilized. The results showed that the mean PSQI global score was significantly higher among SWNs than non-shift work nurses (NSWNs) and was the highest (10.32 ± 3.56 and 10.22 ± 2.4, respectively) among rotatory and fixed night shift nurses. Blood serotonin showed highly significant differences between SWNs over NSWNs ( p = 0.001), and mostly reduced among rotatory and fixed night shift nurses (66.7% and 65%, respectively). Moreover, there were highly significant differences in serotonin levels between poor and good sleep quality nurses ( p < 0.001), and most of the poor sleep quality nurses (62.7%) had low serotonin levels. Abnormal serotonin level (odds = 246.5) and working years (odds = 1.2) were statistically significant predictors of poor sleep quality. In conclusion, SWNs, especially rotating and night shift nurses, suffer from poor sleep quality associated with abnormal levels of blood serotonin.

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The Effect of Shift Fluctuations on Sleep Quality among Nurses Working in the Emergency Room in Amman, Jordan

International Journal of Occupational Safety and Health ◽

10.3126/ijosh.v10i1.29877 ◽

2020 ◽

Vol 10 (1) ◽

pp. 11-17

Author(s):

Khaled Suleiman ◽

Tarek Al-Khaleeb ◽

Mahmoud Al-Kaladeh ◽

Loai Abu Sharour

Keyword(s):

Sleep Quality ◽

Emergency Room ◽

Work Performance ◽

Poor Sleep ◽

Emergency Rooms ◽

Poor Sleep Quality ◽

Cross Sectional ◽

Public And Private ◽

Work Related ◽

The Impact

Introduction: Sleep Quality disturbances are common among nurses especially those working in stressful situations such as emergency room. Additionally, sleep quality disturbances were found to interfere with nurses’ quality of life and work performance. No studies have found the effect of fluctuated shifts on sleep quality among nurses. Objectives: To examine the impact of shift fluctuations on sleep quality among nurses working in the emergency room. Methods: A cross-sectional, descriptive design was employed. Five emergency rooms were selected from public and private hospitals located in Amman, Jordan. The selected hospitals were also referral sites with capacity of more than 200 beds. A convenient sample of nurses who had a minimum of six months experience in the emergency room and working on rotating shifts were eligible for participation. Nurses with known chronic respiratory problems and sleep apnea were excluded. A self-administered questionnaire including a demographic and work-related questions, and the Arabic version of the Pittsburgh Sleep Quality Index were provided. Shift fluctuations were clustered based on interchanging between morning, evening and night shifts. Results: A total of 179 emergency nurses working in rotating shifts participated in the study. The majority of the nurses were poor sleepers. The study found no significant differences between different shifts interchange and sleep quality. However, interchange between morning and evening shift reported the highest sleep disturbance. Sleep quality was positively correlated with the length of experience, while negatively correlated with the age and the number of monthly shifts. Nurses who declared higher satisfaction and ability to work under pressure revealed better sleep quality. Conclusion: Emergency room nurses showed poor sleep quality. While there was no specific shift interchange cluster inducing poor sleep quality, some demographical and work-related characteristics indicated their influence on sleep quality.

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Application of Actigraphy on Shift Workers for Sleep Quality

Advances in Intelligent Systems and Computing - Advances in Physical Ergonomics and Human Factors ◽

10.1007/978-3-319-41694-6_49 ◽

2016 ◽

pp. 495-501

Author(s):

Fang-Ling Lin ◽

Chih-Lin Chang ◽

Zhi-Xuan Chen ◽

Ching-Chung Chen ◽

Chien-Wen Wang

Keyword(s):

Sleep Quality ◽

Shift Workers

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Cardiovascular strain, sleep quality and work-life balance in German shift workers

European Journal of Public Health ◽

10.1093/eurpub/cky212.145 ◽

2018 ◽

Vol 28 (suppl_4) ◽

Author(s):

L Stieler ◽

B Hunger ◽

M Rudolf ◽

S Kreuzfeld ◽

R Stoll ◽

...

Keyword(s):

Sleep Quality ◽

Work Life ◽

Work Life Balance ◽

Life Balance ◽

Shift Workers ◽

Cardiovascular Strain

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Feasibility and Preliminary Efficacy of an m-Health Intervention Targeting Physical Activity, Diet, and Sleep Quality in Shift-Workers

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph16203810 ◽

2019 ◽

Vol 16 (20) ◽

pp. 3810 ◽

Cited By ~ 1

Author(s):

Stina Oftedal ◽

Tracy Burrows ◽

Sasha Fenton ◽

Beatrice Murawski ◽

Anna B. Rayward ◽

...

Keyword(s):

Physical Activity ◽

Sleep Quality ◽

Diet Quality ◽

Mixed Model ◽

Qualitative Interviews ◽

Intervention Group ◽

Wait List ◽

Shift Workers ◽

Accessible Information ◽

System Usability Scale

Poor health behaviors are prevalent in shift-workers, but few multiple health-behavior interventions consider their unique needs. This study aimed to (1) evaluate the feasibility and acceptability of an existing app-based intervention to improve physical activity, diet, and sleep quality in a shift-worker population, (2) estimate intervention effect in a four-week pilot randomized controlled trial (RCT) (ACTRN12618001785291). Shift-workers (18–65 years old) were randomized to intervention (n = 20) or wait-list (n = 20) groups. Outcomes included recruitment, engagement, attrition, usefulness ratings, System Usability Scale (SUS), qualitative interviews, and estimation of treatment effect (minutes of physical activity, diet quality, and sleep quality) using mixed model analysis. Recruitment took one week. App-use at week four was 55% (11/20), 85% (34/40) completed the four-week follow-up questionnaire, and 20% (4/20) of the intervention group completed the qualitative interview. The intervention was rated as slightly to moderately useful by 76.9% (10/13) of participants on a five-point scale. The SUS score was 62.7 (12.7) out of 100. Diet quality improved for the intervention (4.5 points; 95% confidence interval (CI) = 0.1, 8.9; p = 0.047) vs. the wait-list group, but not physical activity or sleep quality. Qualitative interviews found that a more tailored intervention, more accessible information, and interactive features were desired. The intervention was feasible in terms of recruitment, but modifications to increase engagement are needed.

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