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Sleep deprivation is well known to negatively affect mood, cognition and behaviour. The purpose of this paper is to explore the relationship between sleep quantity, subjective sleep quality and aggression, hostility and well-being levels among adults in a non-clinical population.

In total, 201 participants aged 18 and above from Germany, UK and the Netherlands completed an online survey consisting of a Pittsburgh Sleep Quality Index along with measures of psychological well-being, implicit and explicit aggression, and intent attributions.

Sleep disturbances were related to decreased levels of psychological well-being. Subjective poor sleep quality predicted increased hostile attributions. The overall sleep experience, however, was not associated with aggression levels. Nevertheless, both a poor sleep experience and low sleep quality were related to increased reactive aggression, but only in British participants.

The importance of perceived sleep quality rather than sleep quantity in predicting hostile and aggressive behaviours is indicated. The quality of sleep and perception of this quality should be the focus of clinical intervention to limit unwanted behavioural impacts. The importance of accounting for sleep quality perception in intervention that examines attributional biases such as hostility is indicated. Differences across countries should be identified and accommodated for in intervention.

This is the first study to consider a role for sleep quality (including perception) and sleep quantity in relation to aggression and hostility in a cross-country European sample.

To evaluate the effectiveness of a fatigue-management training and sleep health promotion intervention in a sample of officers from UK Home Office Police Forces.

Using a pre- and post-design we exposed 50 officers from selected UK police forces to a fatigue-management training intervention. Pre- and post-intervention data collection included wrist actigraphy, a physiological and objective measure of sleep quantity and quality, as well as surveys including the Pittsburg Sleep Quality Index (PSQI), the World Health Organization Quality of Life (WHOQOL) instrument, the Epworth Sleepiness Scale (ESS), the Perceived Stress Scale (PSS) and the PTSD Checklist (PCL-5).

We found the training significantly increased sleep quantity by 25 min per 24-h period, from 6.9 h to 7.3 h (f = 9.2; df = 519; p = 0.003), and improved sleep quality scores from 84% before the intervention, to 87% after the training (f = 10.6; df = 519; p = 0.001).

Continued research is necessary to guide nationwide implementation of fatigue-management and sleep health promotion programs.

Our findings show that a fatigue-management training resulted in a significant and meaningful increase in sleep among police officers.

This is the first piece of research to emerge from a full population survey (response rate 16.6%) of the UK police service exploring issues of sleep and fatigue.

Working on the night shift is a potential source of occupational stress and has been associated with sleep disorders. The purpose of this paper is to investigate the association between shift work and sleep problems among police officers from Buffalo, New York.

Randomly selected officers (n=111) responded to questions on sleep quality and quantity. Shift work data were obtained from daily payroll records from 1994 to the exam date (1999‐2000). Prevalence ratios (PR) were obtained using Poisson regression models that examined associations of shift work with sleep quality and quantity.

Among police officers, night shift work was significantly and independently associated with snoring and decreased sleep duration.

Although the sleep questions were similar to those used in validated sleep questionnaires, a major strength of this study was the availability of daily work history data on all officers for up to five years prior to the current examination.

This study is a systematic literature review (SLR) on prior research examining the impact of the nocturnal use of social media platforms on a user's sleep, its dimensions and its perceptually allied problems. This SLR aims to curate, assimilate and critically examine the empirical research in this domain.

Forty-five relevant studies identified from the Scopus and Web of Science (WoS) databases were analyzed to develop a comprehensive research profile, identify gaps in the current knowledge and delineate emergent research topics.

Prior research has narrowly focused on investigating the associations between specific aspects of social media use behavior and sleep dimensions. The findings suggest that previous studies are limited by research design and sampling issues. We highlight the imperative need to expand current research boundaries through a comprehensive framework that elucidates potential issues to be addressed in future research.

The findings have significant implications for clinicians, family members and educators concerning promoting appropriate social media use, especially during sleep latency.

Incivility is pervasive in organisational settings, particularly in healthcare, and is associated with negative employee outcomes. The aim of this study was to analyse the relationships between experienced incivility, sleep quality and emotional outcomes, positioning sleep quality as a mediator. Additionally, the protective role of tenure and the unique effects of incivility from different sources were examined.

This study used a daily diary longitudinal design using self-report questionnaires with 92 nurses of varying tenure.

This research demonstrates that experiencing incivility negatively impacts sleep quality, which, in turn, increases surface acting and emotional exhaustion. Furthermore, the negative relationship between incivility and sleep quality is attenuated among nurses who have longer tenure.

These findings are helpful in developing targeted practical practices, such as incivility interventions and mentorship programs to reduce the incidence and impact of incivility.

This study draws upon theories of self-regulation and emotion regulation to examine how incivility diminishes self-control resources, leading to negative outcomes. This study also positions job tenure as a buffer against incivility and examines the differential impact of different sources of incivility.

This study aims to illuminate self‐perceived health‐related quality of life (HRQoL) among newly‐arrived Arabic‐speaking refugees in Malmö, Sweden participating in a specific group Health Promotion activity.

Data consist of questionnaires, observations and oral evaluations in groups. Questions about HRQoL was measured by EQ‐5D self‐assessment containing five dimensions and three response options of severity, including a visual analog health rating scale. Participants' sleep patterns were measured by a sleep and recovery questionnaire with questions about sleep quality and sleep quantity.

The results show that disturbed sleep relates to EQ‐5D variables and to health rating scores. Moreover, there are changes over time and participants' perceptions of their health and quality of life in most EQ‐5D variables have significantly increased after the end of activity. In the variables pain and depression an improvement remains even at second follow up and health rating scores are higher at both follow ups relative to what it was originally. Sleep and recovery problems were perceived as less difficult at the course completion and second follow up.

Because of practical and ethical reasons there is an absence of a control group in this study.

The paper includes implications for education in medicine, health care and social work, for the design of the refugee reception programs and for the inter‐professional collaborations.

The paper shows that health promotion interventions in group setting in the first stage of resettlement turn out to be useful according to HRQoL and knowledge of the health care system.

The purpose of this paper is to study well-being among the internationally mobile work force by exploring the relationships between international business traveling, work-family conflict (WFC), and health issues. In this study, these relationships are examined on the basis of the health impairment process of the job demands-resources model. More specifically, the study examines the role of WFC as a mediator between international business travel and sleep problems using a full panel design.

The data for this study are drawn from Finnish employees whose work involved international business travel (n=868) and who answered two surveys with a one-year time lag.

The results showed that international business travel in terms of the number of travel days per year, while not predicting sleep problems directly over time, did significantly increase WFC, which in turn increased sleep problems. Thus, WFC functioned as a mediator in the relationship between business travel and subsequent sleep problems.

The results indicate that family-friendly HR policies and practices might help international business travelers (IBTs) reduce levels of WFC, which could in turn protect them from harmful health effects, particularly sleep problems.

The study examines the understudied professional group of IBTs and contributes to the knowledge on their well-being and WFC issues.

The purpose of this paper is to explore business travelers’ sleep experience in hotels by measuring sleep quality and determining the extent to which hotel attributes, demographic characteristics, and hotel quality level influence their sleep quality while staying in hotels.

This study utilized a self-reported survey to obtain data from business travelers who have stayed in a hotel at least two nights for a business trip in the past 30 days. A total of 304 business travelers were surveyed in this study.

The results indicated that there was a difference in the factors that influenced business travelers’ overall satisfaction with sleep in mid-scale (2.5-3.5 stars) vs upscale hotels (4+stars). The findings showed that business travelers generally had lower sleep quality at hotels and they were more likely affected by noise both outside and inside the guestroom, as well as material elements inside the room.

This study represents a pioneering attempt at exploring business travelers’ sleep quality and satisfaction with sleep in hotels. Furthermore, this study contributes to the limited research addressing sleep quality as a fundamental function of hotel services. Also, this is the first study to measure business travelers’ sleep quality in hotels by using the sleep quality scale.

Driving needs high levels of alertness. Increased somnolence is the most important negative influence to maintain proper watchfulness and vigilance. Drowsiness, working conditions and their affective impact must be taken into account to determine driving safety. The purpose of this paper is to assess excessive daytime sleepiness, sleep habits, quality of sleep, stress-related symptoms, and working conditions in a large sample of short-distance bus drivers in the city of Buenos Aires.

This was a cross-sectional study performed to evaluate sleep habits and obstructive apnea risk in short-distance bus drivers of the Metropolitan Area of Buenos Aires, Argentina. Questionnaires regarding anthropometric data, sleep habits, snoring, daytime sleepiness (Epworth Sleepiness Scale), quality of sleep (Pittsburgh Quality of Sleep Index, PQSI), working conditions and fatigue and anxiety related to work were administered to professional short-distance bus drivers (n=1023).

A prevalence of 34.6 percent of obesity and 80 percent of snoring was observed. Mean sleep time during workdays was 6.5±0.1 h and bad sleep quality was reported by 54.6 percent of the subjects. Excessive daytime sleepiness had a prevalence of 48.8 percent and was independently associated with reduced sleep time, increased sleep debt, long time to wake up, snoring, and short resting time along the working day (p<0.05).

Short-distance drivers in Buenos Aires, the largest urban area of Argentina, are a partially sleep-deprived, overweighted population, showing a high daytime somnolence, poor work-rest conditions and high levels of anxiety and fatigue. This association can be very harmful in view of the demanding working conditions considered.

Adolescents being in a stage of growth need good sleep, but, today, they suffer from sleep deprivation due to such extrinsic factor as a smartphone which they enjoy spending time using the device. However, the effects of smartphone output power (SOP) on the duration of good sleep remains unclear. The purpose of this paper is to investigate the correlation of the SOP and sleep loss in high school students.

The time-series study was conducted among 145 high school students in Chiang Mai Province who completed a sleep diary which applied by the Pittsburg Sleep Quality Index. The SOP was corrected by a smartphone application and transmitted by e-mail to a researcher every day. The completed data set contains 12,969 entries. Headache, anxiety and depression were also assessed. Data were analyzed using the generalized estimating equation adjusted for demographic data, smartphone use and other factors.

Most of the study subjects are female, 17.4 years old on average. The prevalence of sleep loss (<8 h) was 52.9 percent with averagely 7.4 ±1.7 h of sleep duration and poor sleep at 32.1 percent. Anxiety, depression, headache had relationships with sleep loss. The daily dose, evening and nocturnal SOP in the range of ≥ 2.00 × 10^‒5 mW had stronger relationships with sleep loss than their effects in the range of ≤ 1.79 × 10^‒5 mW (OR_adj1.32; 95% CI: 1.26–1.76, OR_adj1.34; 95% CI: 1.07–1.17 and OR_adj1.41; 95% CI: 1.07–1.17, respectively). Meanwhile, morning Lag_2 and daytime Lag_1 in the range of ≥ 2.00 × 10^‒5 mW appeared to have a strong relationship with sleep loss (OR_adj1.60; 95% CI: 1.26–1.76, OR_adj1.36; 95% CI: 1.07–1.17). The relationship between Lag_4 daily dose and sleep loss took the form of a reverse dose-response.

Sleep loss in adolescents has an increasing trend of prevalence and has been found to be correlated with the highest SOP group (≥ 2.00 × 10^‒5 mW range). These results confirmed that increased and longer smartphone use result in reduced sleep time. This causes them to be exposed to smartphone electromagnetic radiation and smartphone screen lighting. This disturbs brain waves and nervous system controlling sleep balance mechanisms. The findings recommended parents setting time and boundaries around technology use at home to reduce contact with electromagnetic radiation and smartphone screen lighting, thereby increasing sleeping time in order to create good sleep quality.