scholarly journals Pengaruh Shift Kerja Terhadap Kelelahan dan Performansi Pengendali Kereta Api Indonesia

2017 ◽  
Vol 6 (2) ◽  
pp. 79
Author(s):  
Lauditta Irianti
Keyword(s):  
Shift Work ◽  
Human Performance ◽  
Night Shift ◽  
Working Hours ◽  
Vigilance Task ◽  
Process Data ◽  
Significant Difference ◽  
And Performance ◽  
Occupational Fatigue ◽  
Psychomotor Vigilance

<p><em>The purpose of this study is  to evaluate the effect of shift work on level of fatigue and  performance of railway controller. Seventeen participants are the railway controller of Bandung Station. Fatigue was measured using subjective questionaire Swedish Occupational Fatigue Inventory (SOFI) and performance was measured using Psychomotor Vigilance Task based on reaction time.  Friedman test and Bonferonni-Dunn test were used to process data. Statistical analysis indicates there was significant difference level of fatigue and human performance between shift work. Fatigue occurs at sleepiness, phsysical discomfort and lack of motivation dimensions, while performance occurs at mean 1/RT, fastest 1/RT and slowest 1/RT (P &lt; 0,10). %. The highest fatigue and the worst performance occurs after night shift. After night shift, the level of fatigue increased about 37% to 162%, meanwhile performance were decreased about 3% to 11%. Although there were significant difference of level fatigue, the average scores are below 1 (score 0-7). This result indicates that the fatigue of controllers  are very low.  Although maybe is not really necessary to redesign shift work system, but working hours on each shift still need to be concerned. </em></p>

scholarly journals Not only a Problem of Fatigue and Sleepiness: Changes in Psychomotor Performance in Italian Nurses across 8-h Rapidly Rotating Shifts

2019 ◽  
Vol 8 (1) ◽  
pp. 47 ◽  
Author(s):  
Marco Di Muzio ◽  
Flaminia Reda ◽  
Giulia Diella ◽  
Emanuele Di Simone ◽  
Luana Novelli ◽  
...  
Keyword(s):  
Shift Work ◽  
Psychomotor Performance ◽  
Night Shift ◽  
Vigilance Task ◽  
Cross Sectional Study ◽  
Analysis Of Covariance ◽  
Cross Sectional ◽  
Subject Analysis ◽  
And Performance ◽  
Psychomotor Vigilance

Although many studies have detailed the consequences of shift work in nurses concerning health, fatigue, sleepiness, or medical errors, no study has been carried out trying to disentangle the contribution of sleepiness and fatigue associated to shift work from the attentional performance. The aim of this pilot study is (A) to investigate the effects of an 8-h rapidly rotating shift on fatigue and sleepiness among staff nurses and (B) how these factors affect their psychomotor performance. Fourteen nurses were selected for a within-subject cross-sectional study according to this sequence of shifts: morning–afternoon–night, which were compared as function of tiredness, sleepiness, and performance at the Psychomotor Vigilance Task (PVT). Subsequently, a within-subject Analysis of Covariance (ANCOVA) evaluated if the observed differences between shifts persist when the contribution of sleepiness is controlled. Our results clearly indicate that night shifts are associated with significant greater sleepiness and tiredness, and worsened performance at the PVT. As hypothesized, ANCOVA showed that these differences disappear when the contribution of sleepiness is controlled. Results point to a lower psychomotor performance in night compared to day shifts that depends on sleepiness. Hence, interventions to minimize the consequences of the night shift should consider a reduction of sleepiness.

scholarly journals Cognitive Impairments during the Transition to Working at Night and on Subsequent Night Shifts

2019 ◽  
Vol 34 (4) ◽  
pp. 432-446 ◽  
Author(s):  
Andrew W. McHill ◽  
Kenneth P. Wright
Keyword(s):  
Cognitive Performance ◽  
Shift Work ◽  
Night Shift ◽  
Reaction Times ◽  
Modern Society ◽  
Vigilance Task ◽  
The Hours ◽  
And Performance ◽  
Attentional Lapses ◽  
Night Shifts

Demands of modern society force many work operations into the night when the internal circadian timekeeping system is promoting sleep. The combination of disturbed daytime sleep and circadian misalignment, which is common in overnight shift work, decreases cognitive performance, yet how performance may differ across multiple consecutive nights of shift work is not fully understood. Therefore, the primary aim of this study was to use a simulated night-shift protocol to examine the cognitive performance and ratings of sleepiness and clear-headedness across the hours of a typical daytime shift, a first night shift with an afternoon nap and extended wakefulness, and 2 subsequent overnight shifts. We tested the hypothesis that cognitive performance would be worse on the first night shift as compared with the baseline and subsequent nighttime shifts and that performance during nighttime shifts would be reduced as compared with the baseline daytime shift. Fifteen healthy adults (6 men) were studied in the 6-day in-laboratory protocol. Results showed that working during the night increased subjective sleepiness and decreased clear-headedness and performance on the Psychomotor Vigilance Task (i.e., slower median, fastest and slowest reaction times, and increased attentional lapses), Stroop color word task (decreased number of correct responses and slower median reaction time), and calculation addition performance task (decreased number attempted and correct). Furthermore, we observed limited evidence of sleepiness, clear-headedness, or performance adaptation across subsequent nights of simulated night work. Our findings demonstrate that night-shift work, regardless of whether it is the first night shift with a nap and extended wakefulness or subsequent night shifts, decreases performance and clear-headedness as compared with the day shift.

scholarly journals STABILITY AND INSTABILITY OF AN OUTDOOR ILLUMINATION INSTALLATION

2004 ◽  
Vol 12 (4) ◽  
pp. 115-119
Author(s):  
Klaus-Dieter Fröhner ◽  
Ze Li
Keyword(s):  
Human Performance ◽  
Night Shift ◽  
Lighting Design ◽  
Work Efficiency ◽  
Safety And Health ◽  
Stability And Instability ◽  
Visual Tasks ◽  
And Performance ◽  
The Stability

Stability and instability are very important for the layout of real world processes concerning safety and health esp. when planned by scientists. The long‐term investigation of stability was carried out for the last ten years on the basis of the installation and the evaluation of an ergonomically designed outdoor illumination. In the depicted dynamic situation the lighting design influences directly visual discomfort and human performance and in the end stability and instability. The improvement of the adaptation of luminance and its influence on the visual tasks after the rearrangement are presented and discussed. The effective factors on the visual capability and performance of workers, work efficiency and potential accidents in the night shift, and furthermore the accelerators and barriers for the stability of the project are analysed and discussed.

scholarly journals The Effect of Shift Work and Poor Sleep on Self-Reported Skin Conditions: A Survey of Call Center Agents in the Philippines

2019 ◽  
Vol 1 (2) ◽  
pp. 273-279 ◽  
Author(s):  
Francine Lu ◽  
Amanda Suggs ◽  
Harib Ezaldein ◽  
Jason Ya ◽  
Pingfu Fu ◽  
...  
Keyword(s):  
Circadian Rhythm ◽  
Shift Work ◽  
Skin Disease ◽  
Call Center ◽  
Night Shift ◽  
The Philippines ◽  
Poor Sleep ◽  
Shift Workers ◽  
Significant Difference ◽  
Skin Conditions

Night shift workers may have a disrupted circadian rhythm, which may contribute to the development of skin disease. The purpose of this study was to determine whether there is a significant difference in the prevalence and severity of self-reported skin disease between “regular” day shift workers compared to “graveyard” night shift workers. We conducted surveys from 630 call center agents in Manila, the Philippines, and they were analyzed regarding demographics, medical history, dermatologic history, lifestyle, and sleep. No difference was found in the prevalence of skin disease between shifts. However, night shift workers were worse sleepers. When compared to good sleepers, poor sleepers had a higher prevalence of skin disease with worse severity. Graveyard shift workers with poor sleep may have increased skin disease severity.

scholarly journals The impact of cognitive fatigue on airline pilots performance

2021 ◽  
Vol 11 (1) ◽  
pp. 16
Author(s):  
Nuno Quental ◽  
João Rocha ◽  
Jorge Silva ◽  
Lídia Menezes ◽  
Jorge Santos
Keyword(s):  
Human Error ◽  
Human Performance ◽  
Vigilance Task ◽  
Sleep Diary ◽  
Cognitive Fatigue ◽  
Airline Pilots ◽  
Fatigue Score ◽  
Fatigue Management ◽  
Psychomotor Vigilance ◽  
The Impact

Purpose: Air transport is a highly regulated branch of aviation, but it continues to show occurrences where human error is present. Fatigue is now recognized as a hazard which degrades human performance and can put flight safety at risk. In this regard, the general objective of this study is to assess the impact of cognitive fatigue on airline pilots and how it can contribute to the occurrence of accidents and incidents.Methodology: Three airline pilots participated in the case study. The participants’ cognitive fatigue was monitored according to four methods, being two of them of a subjective nature – the sleep diary (SD) and the Samn-Perelli 7-Point Fatigue Scale (SPS), and the other two of an objective nature – the Psychomotor Vigilance Task (PVT) and the actigraphy (actiwatch ReadibandTM 5). During their flight duty periods (FDPs), the pilots’ performance was also assessed according to the score delivered by a fatigue management software (FAID®).Findings: The obtained results allowed to understand whether the pilots are aware of their alertness and to identify factors which affect their performance levels. Between the beginning and the end of each FDP, significant changes were observed concerning the assessment on the SPS scale, the reaction time (RT) and the fatigue score generated by the biomathematical models associated to the technique of the actigraphy and the software FAID®.Originality/value: The risk of accident or serious error was classified according to the four methodologies used. Thus, it is possible to verify if there is a correspondence between the different scales or if there are scales more conservative (with a higher associated risk) than others.

scholarly journals The effect of shift work on the diet of accident and emergency nurses at a general hospital in Malta

2017 ◽  
Vol 47 (2) ◽  
pp. 165-174 ◽  
Author(s):  
Jesmond Seychell ◽  
Sue Reeves
Keyword(s):  
General Hospital ◽  
Shift Work ◽  
Night Shift ◽  
Working Hours ◽  
Dietary Intakes ◽  
Emergency Nurses ◽  
Cross Sectional ◽  
Content Type ◽  
Accident And Emergency ◽  
The Impact

Purpose The purpose of this paper was to investigate the effect of shift work on diet and lifestyle in nurses working in the accident and emergency department in a general hospital in Malta. Design/methodology/approach This study was a cross-sectional, quantitative survey, whereby data were collected by the use of anonymous questionnaires consisting of a demographic and anthropometric questionnaire, a lifestyle questionnaire and a food frequency questionnaire to assess dietary intakes. In total, 110 nurses completed the study and were divided into three groups: day nurses, rotating-shift nurses and night-shift nurses. Findings Shift working nurses consumed significantly more energy compared to day nurses (night-shift nurses 1,963 ± 506 kcal; rotating-shift nurses 2,065 ± 655 kcal; day nurses 1,722 ± 486 kcal; p = 0.04). Shift working nurses also consumed more protein (p = 0.04), fat (p = 0.047) and fibre (p = 0.005) compared to day nurses; however, day nurses were the most likely to smoke (p = 0.009). Practical implications Shift work does influence the diet of nurses in Malta. It is recommended that access to healthy food, and time and facilities for physical activity are made available across all working hours and that nurses aim to exercise regularly, eat healthily, quit smoking if necessary and get good-quality sleep where possible. Originality/value In total, 22 per cent of workers in Malta work shifts, and Malta currently has one of the highest rates of obesity in Europe. This study considers the impact of shift work on diet.

scholarly journals Prediction Of Shiftworker Alertness, Sleep, And Circadian Phase Using A Model Of Arousal Dynamics Constrained By Shift Schedules And Light Exposure

SLEEP ◽  
2021 ◽  
Author(s):  
Stuart A Knock ◽  
Michelle Magee ◽  
Julia E Stone ◽  
Saranea Ganesan ◽  
Megan D Mulhall ◽  
...  
Keyword(s):  
Light Exposure ◽  
Night Shift ◽  
Vigilance Task ◽  
Study Data ◽  
Accurate Prediction ◽  
Environmental Constraints ◽  
Wake Time ◽  
Circadian Phase ◽  
Shift Schedules ◽  
And Performance

Abstract Study Objectives The study aimed to, for the first time, (i) compare sleep, circadian phase, and alertness of Intensive Care Unit (ICU) nurses working rotating shifts with those predicted by a model of arousal dynamics; and (ii) investigate how different environmental constraints affect predictions and agreement with data. Methods The model was used to simulate individual sleep-wake cycles, urinary 6-sulphatoxymelatonin (aMT6s) profiles, subjective sleepiness on the Karolinska Sleepiness Scale (KSS), and performance on a Psychomotor Vigilance Task (PVT) of 21 ICU nurses working day, evening, and night shifts. Combinations of individual shift schedules, forced wake time before/after work and lighting, were used as inputs to the model. Predictions were compared to empirical data. Simulations with self-reported sleep as an input were performed for comparison. Results All input constraints produced similar prediction for KSS, with 56-60% of KSS scores predicted within ±1 on a day and 48-52% on a night shift. Accurate prediction of an individual’s circadian phase required individualised light input. Combinations including light information predicted aMT6s acrophase within ±1 h of the study data for 65% and 35-47% of nurses on diurnal and nocturnal schedules. Minute-by-minute sleep-wake state overlap between the model and the data was between 81±6% and 87±5% depending on choice of input constraint. Conclusions The use of individualised environmental constraints in the model of arousal dynamics allowed for accurate prediction of alertness, circadian phase and sleep for more than half of the nurses. Individual differences in physiological parameters will need to be accounted for in the future to further improve predictions.

scholarly journals Slow-frequency electroencephalography activity during wake and sleep in obesity hypoventilation syndrome

SLEEP ◽  
2019 ◽  
Author(s):  
Sheila Sivam ◽  
Joseph Poon ◽  
Keith K H Wong ◽  
Brendon J Yee ◽  
Amanda J Piper ◽  
...  
Keyword(s):  
Reaction Times ◽  
Vigilance Task ◽  
Study Objective ◽  
Eeg Activity ◽  
Psychomotor Vigilance Test ◽  
Obstructive Sleep ◽  
Significant Difference ◽  
Psychomotor Vigilance ◽  
Obesity Hypoventilation ◽  
Slow Frequency

Abstract Study Objective Neurophysiological activity during wake and sleep states in obesity hypoventilation (OHS) and its relationship with neurocognitive function is not well understood. This study compared OHS with equally obese obstructive sleep apnea (OSA) patients, with similar apnea-hypopnea indices. Methods Resting wake and overnight sleep electroencephalography (EEG) recordings, neurocognitive tests, and sleepiness, depression and anxiety scores were assessed before and after 3 months of positive airway pressure (PAP) therapy in 15 OHS and 36 OSA patients. Results Pretreatment, greater slow frequency EEG activity during wake and sleep states (increased delta-alpha ratio during sleep, and theta power during awake) was observed in the OHS group compared to the OSA group. EEG slowing was correlated with poorer performance on the psychomotor vigilance task (slowest 10% of reciprocal reaction times, psychomotor vigilance test [PVT SRRT], primary outcome), and worse sleep-related hypoxemia measures in OHS. There was no between-group significant difference in PVT performance at pre or post-treatment. Similarly, despite both groups demonstrating improved sleepiness, anxiety and depression scores with PAP therapy, there were no differences in treatment response between the OSA and OHS groups. Conclusion Patients with OHS have greater slow frequency EEG activity during sleep and wake than equally obese patients with OSA. Greater EEG slowing was associated with worse vigilance and lower oxygenation during sleep. Clinical Trial This trial was registered with the Australian and New Zealand Clinical Trials Registry (ACTRN12615000122550).

scholarly journals 8 General surgical foundation doctor optimisation of daily practice

2019 ◽  
Vol 95 (1130) ◽  
pp. 687.1-687
Author(s):  
Emmanuel Feldano ◽  
Ben Ramasubbu
Keyword(s):  
Structural Changes ◽  
Working Hours ◽  
Daily Practice ◽  
Task Completion ◽  
Junior Doctors ◽  
Daily Routine ◽  
European Working ◽  
Significant Difference ◽  
Working Day ◽  
And Performance

IntroductionTraditionally the role of a surgical foundation year 1 (FY1s) doctors consisted of long working hours, multiple on call shifts and little to rest however, the introduction of European working time directive now means that FY1s are constricted to 48 hours per week on average and various other regulations that junior doctors should abide by yet the same quantity of daily tasks remains the same. In this study we looked at the difficulties FY1s now face in their daily working day and if some of these issues could be resolved by implementing some structural changes.MethodsThe study was conducted in three cycles, each lasting five days (Monday to Friday). Cycle 1 included shadowing of Surgical FY1s on wards for five consecutive days observing daily routine (arrival, lunch and departure time), task completion, communication and handovers. Following this multiple interventions were made to the structure of their daily practice to improve productivity and performance. These improvements were measured in cycle 2 (as the new model was scaffolded into place) and cycle 3 (strictly observed).ResultsIn cycle 1 we observed that 100% of F1s arrived to work on time, there was no set times for lunch and all of the FY1s lunches were interrupted. There was no structure for handovers and 100% of F1s stayed at work beyond there contracted hours. In second cycle, 100% of F1s had lunch between the hours of 12pm-1PM on 3/5 days and 75% on the remaining two days. 75% of F1s had uninterrupted lunches on all 5 days. Morning and afternoon handovers were completed every day. In cycle 3 the results remained as high. There was no significant difference in number of tasks between week 1, 2 and 3.ConclusionThrough the implementation of daily structure and other interventions involving the multidisciplinary team we improved the quality of F1s working day and increased the efficiency of service delivered on the surgical ward.

scholarly journals Association between work schedules and motivation for lifestyle change in workers with overweight or obesity: a cross-sectional study in Japan

BMJ Open ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. e033000
Author(s):  
Yukihiro Tanikawa ◽  
Miho Kimachi ◽  
Minoru Ishikawa ◽  
Tomoichiro Hisada ◽  
Shunichi Fukuhara ◽  
...  
Keyword(s):  
Shift Work ◽  
Subgroup Analysis ◽  
Behavioural Change ◽  
Night Shift ◽  
Working Hours ◽  
Cross Sectional ◽  
Shift Workers ◽  
Long Working Hours ◽  
Night Shift Work ◽  
Overweight Or Obesity

ObjectiveTo investigate the association between work schedules and motivation for behavioural change of lifestyle, based on the transtheoretical model (TTM) in workers with overweight or obesity.DesignA cross-sectional observational study.SettingA healthcare examination centre in Japan.ParticipantsBetween April 2014 and March 2016, we recruited 9243 participants who underwent healthcare examination and met the inclusion criteria, namely, age 20–65 years, body mass index (BMI) ≥25 kg/m2and full-time workers.ExposureNight and shift (night/shift) workers were compared with daytime workers in terms of motivation for behavioural change.Primary and secondary outcome measuresThe primary outcome was action and maintenance stages of change (SOC) for lifestyle in TTM. In a subgroup analysis, we investigated interactions between characteristics, including age, sex, BMI, current smoking, alcohol habits, hours of sleep and working hours.ResultsOverall, 1390 participants (15.0%) were night/shift workers; night/shift workers were younger (median age (IQR): 46 (40–54) vs 43 (37–52) years) and the proportion of men was lesser (75.4 vs 60.9%) compared with daytime workers. The numbers of daytime and night/shift workers in the action and maintenance SOC were 2113 (26.9%) and 309 (22.2%), respectively. Compared with daytime workers, night/shift workers were less likely to demonstrate action and maintenance SOC (adjusted OR (AOR): 0.85, 95% CI: 0.74 to 0.98). In a subgroup analysis that included only those with long working hours (≥10 hours/day), results revealed a strong inverse association between night/shift work and action and maintenance SOC (AOR: 0.65, 95% CI: 0.48 to 0.86). A significant interaction was observed between long working hours and night/shift work (P for interaction=0.04).ConclusionsIn workers with overweight or obesity, a night/shift work schedule was associated with a lower motivation for behavioural change in lifestyle, and the association was strengthened in those with long working hours.

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