The influence of integrative lighting on sleep and cognitive functioning of shift workers during the morning shift in an assembly plant

2022 ◽  
Vol 99 ◽  
pp. 103618
Author(s):  
Eowyn Van de Putte ◽  
Sara Kindt ◽  
Peter Bracke ◽  
Michael Stevens ◽  
Maarten Vansteenkiste ◽  
...  
Keyword(s):  
Cognitive Functioning ◽  
Shift Workers ◽  
Assembly Plant ◽  
Morning Shift

scholarly journals Free-Living Sleep, Food Intake, and Physical Activity in Night and Morning Shift Workers

2019 ◽  
Vol 39 (5) ◽  
pp. 450-456 ◽  
Author(s):  
Shaza Lauren ◽  
Yichi Chen ◽  
Ciaran Friel ◽  
Bernard P. Chang ◽  
Ari Shechter
Keyword(s):  
Physical Activity ◽  
Food Intake ◽  
Free Living ◽  
Shift Workers ◽  
Morning Shift

scholarly journals Impacts of shift work: A study in textile companies in Portugal

2017 ◽  
Vol 1 (1) ◽  
pp. 69-78
Author(s):  
I. S. Silva ◽  
J. Keating ◽  
D. Costa
Keyword(s):  
Shift Work ◽  
Social Life ◽  
Sleep Disturbances ◽  
Night Shift ◽  
The Other ◽  
Work Schedules ◽  
Textile Workers ◽  
Shift Workers ◽  
Work Shifts ◽  
Morning Shift

Shift work, especially if it involves night work and/or weekend work, may represent disadvantages for workers and their families at the level of family, social life, and health. The present study evaluates the impacts of three work shifts (morning, afternoon and night) on sleep, family and social life as well as satisfaction with work schedules. In total, 373 Portuguese textile workers participated in this study; all were men. The results indicated that night shift workers had greater sleep disturbances and less satisfaction with their work schedules. On the other hand, morning shift workers were most satisfied with family and social life in association with their work schedules. Based on the results, implications of the practice have been reflected.

A Review of Obstructive Sleep Apnea, Shift Work, Gender

2018 ◽  
Vol 3 (03) ◽  
Author(s):  
Chen Zuo ◽  
Felicia Jefferson
Keyword(s):  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Cognitive Functioning ◽  
Eye Movement ◽  
Shift Work ◽  
Night Shift ◽  
Rapid Eye Movement Sleep ◽  
Shift Workers ◽  
Obstructive Sleep ◽  
Gender Specific

The purpose of the review is to make connections between obstructive sleep apnea (OSA) and shift work while giving special attention to the factor of gender and rapid eye movement sleep. Obstructive sleep apnea is a common sleep disorder that has various detrimental effects on health and cognitive functioning. The prevalence and symptoms of OSA appear to be gender specific. The current clinical guideline has not yet included the evaluation of fatigue, the common symptoms among women with OSA, which may lead to an under diagnosis of OSA among women. Rapid eye movement sleep is associated with more severe OSA episodes. Shift work has a similar range of effects on health and cognitive functioning, however, it affects workers through both sleep disturbance and circadian disruption. Gender specific effects have also been observed among shift workers. Night shift interacts with REM sleep and may lead to a higher risk of cardiovascular disease. Finally, we proposed the question, “Is there a difference in the REM sleep of male and female night shift workers with OSA,” and “How is cognitive functioning of these two groups affected by the interaction of OSA and shift work?”.

scholarly journals Assessment of work-related stress by using salivary cortisol level examination among early morning shift workers

2018 ◽  
Vol 26 (2) ◽  
pp. 92-97 ◽  
Author(s):  
Oľga Šušoliaková ◽  
Jindra Šmejkalová ◽  
Marie Bičíková ◽  
Lenka Hodačová ◽  
Andrea Málková ◽  
...  
Keyword(s):  
Cortisol Level ◽  
Salivary Cortisol ◽  
Early Morning ◽  
Work Related Stress ◽  
Shift Workers ◽  
Work Related ◽  
Salivary Cortisol Level ◽  
Related Stress ◽  
Morning Shift

scholarly journals Hormonal changes in satisfied and dissatisfied shift workers across a shift cycle

2003 ◽  
Vol 95 (5) ◽  
pp. 2099-2105 ◽  
Author(s):  
John Axelsson ◽  
Torbjörn Åkerstedt ◽  
Göran Kecklund ◽  
Anne Lindqvist ◽  
Reine Attefors
Keyword(s):  
Shift Work ◽  
Sleep Problems ◽  
Hormonal Changes ◽  
Shift Workers ◽  
Need For Recovery ◽  
Testosterone Levels ◽  
Disturbed Sleep ◽  
Morning Cortisol ◽  
Low Testosterone ◽  
Morning Shift

Although the literature claims that shift work is harmful, it overlooks the fact that that many shift workers are satisfied and stay healthy. There is little knowledge of the biological mechanisms mediating the differences in susceptibility. The present study compared satisfied and dissatisfied shift workers with respect to major anabolic and catabolic hormones. Forty-two male shift workers, with an extremely rapidly rotating shift schedule, were divided into two groups according to their ratings of satisfaction with their work hours. Morning blood samples were taken during the first and last morning shift in the shift cycle. Serum was analyzed with respect to testosterone, cortisol, and prolactin. Dissatisfied shift workers had lower morning testosterone than satisfied ones, but they did not significantly differ with respect to cortisol or prolactin. Low testosterone levels were, in addition, associated with a greater sleep need, disturbed sleep/wakefulness, and an increased need for recovery after the work period, the latter being the best predictor of testosterone levels. The only change across the shift cycle concerned a significant decrease of morning cortisol at the end of the shift cycle. High morning cortisol was related to having a morning personality and fewer sleep problems before the morning shift. Dissatisfaction with the shift system seems related to lower testosterone levels, which in turn are related to disturbed sleep/wakefulness and increased need for sleep and recovery. Furthermore, morning cortisol was reduced across a shift cycle. It is suggested that reduced testosterone levels may be part of a mechanism of shift work maladjustment.

scholarly journals Shift Work and Cognitive Flexibility: Decomposing Task Performance

2017 ◽  
Vol 32 (2) ◽  
pp. 143-153 ◽  
Author(s):  
Philip Cheng ◽  
Gabriel Tallent ◽  
Thomas John Bender ◽  
Kieulinh Michelle Tran ◽  
Christopher L. Drake
Keyword(s):  
Cognitive Functioning ◽  
Task Performance ◽  
Shift Work ◽  
Cognitive Flexibility ◽  
Switch Cost ◽  
Night Shift ◽  
Cognitive Effort ◽  
Future Research ◽  
Shift Workers ◽  
Circadian Phase

Deficits in cognitive functioning associated with shift work are particularly relevant to occupational performance; however, few studies have examined how cognitive functioning is associated with specific components of shift work. This observational study examined how circadian phase, nocturnal sleepiness, and daytime insomnia in a sample of shift workers ( N = 30) were associated with cognitive flexibility during the night shift. Cognitive flexibility was measured using a computerized task-switching paradigm, which produces 2 indexes of flexibility: switch cost and set inhibition. Switch cost represents the additional cognitive effort required in switching to a different task and can impact performance when multitasking is involved. Set inhibition is the efficiency in returning to previously completed tasks and represents the degree of cognitive perseveration, which can lead to reduced accuracy. Circadian phase was measured via melatonin assays, nocturnal sleepiness was assessed using the Multiple Sleep Latency Test, and daytime insomnia was assessed using the Insomnia Severity Index. Results indicated that those with an earlier circadian phase, insomnia, and sleepiness exhibited reduced cognitive flexibility; however, specific components of cognitive flexibility were differentially associated with circadian phase, insomnia, and sleepiness. Individuals with an earlier circadian phase (thus more misaligned to the night shift) exhibited larger switch costs, which was also associated with reduced task efficiency. Shift workers with more daytime insomnia demonstrated difficulties with cognitive inhibition, whereas nocturnal sleepiness was associated with difficulties in reactivating previous tasks. Deficits in set inhibition were also related to reduced accuracy and increased perseverative errors. Together, this study indicates that task performance deficits in shift work are complex and are variably impacted by different mechanisms. Future research may examine phenotypic differences in shift work and the associated consequences. Results also suggest that fatigue risk management strategies may benefit from increased scope and specificity in assessment of sleep, sleepiness, and circadian rhythms in shift workers.

Effects of dynamic ambient lighting on female permanent morning shift workers

2013 ◽  
Vol 46 (2) ◽  
pp. 140-156 ◽  
Author(s):  
M Canazei ◽  
P Dehoff ◽  
S Staggl ◽  
W Pohl
Keyword(s):  
Shift Workers ◽  
Ambient Lighting ◽  
Morning Shift

A Review of Obstructive Sleep Apnea, Shift Work, Gender

2018 ◽  
Vol 1 (02) ◽  
Author(s):  
Chen Zuo ◽  
Joshua Jefferson
Keyword(s):  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Cognitive Functioning ◽  
Eye Movement ◽  
Shift Work ◽  
Night Shift ◽  
Rapid Eye Movement Sleep ◽  
Shift Workers ◽  
Obstructive Sleep ◽  
Gender Specific

The purpose of the review is to make connections between obstructive sleep apnea (OSA) and shift work while giving special attention to the factor of gender and rapid eye movement sleep. Obstructive sleep apnea is a common sleep disorder that has various detrimental effects on health and cognitive functioning. The prevalence and symptoms of OSA appear to be gender specific. The current clinical guideline has not yet included the evaluation of fatigue, the common symptoms among women with OSA, which may lead to an under diagnosis of OSA among women. Rapid eye movement sleep is associated with more severe OSA episodes. Shift work has a similar range of effects on health and cognitive functioning, however, it affects workers through both sleep disturbance and circadian disruption. Gender specific effects have also been observed among shift workers. Night shift interacts with REM sleep and may lead to a higher risk of cardiovascular disease. Finally, we proposed the question, “Is there a difference in the REM sleep of male and female night shift workers with OSA,” and “How is cognitive functioning of these two groups affected by the interaction of OSA and shift work?”.

scholarly journals Human Centric Lighting: The impact of light on sleep and attention of factory shift workers

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
S Kindt ◽  
E Van de Putte ◽  
P Bracke ◽  
L Vandevivere ◽  
W Ryckaert
Keyword(s):  
Visual Comfort ◽  
Attention Task ◽  
Shift Workers ◽  
Lighting Condition ◽  
Lighting Conditions ◽  
Before And After ◽  
Illuminance Level ◽  
Sleep And Cognition ◽  
The Impact ◽  
Morning Shift

Abstract Introduction Increased blue-enriched morning light is often said to support circadian rhythm synchronization. Through a better sleep quality, one's cognitive and emotional functioning can also be enhanced. However, it is unclear which light characteristics (especially illuminance at eye level) are necessary to obtain a wellbeing effect in employees. This field study investigated different lighting conditions in a truck factory. Methods 71 shift workers participated in the study during their morning shift (6 am - 2 pm). Measurements of sleep (MotionWatch8), attention (D2 attention task, go no-go computer task) and visual comfort (questionnaire) were administered before and after changing the lighting conditions. A Human Centric Lighting-condition (HCL; vertical melanopic equivalent daylight illuminance (MEDI) = 250 lux, CCT=5000 K; N = 33) was compared with a control LED-condition (MEDI = 44 lux, CCT=4000K; N = 38). Results Results show that workers in the HCL-condition showed a larger improvement in sleep efficiency (p=.057) and concentration (p=.01) than the control LED-group. No differences were found in visual comfort between groups. Discussion Preliminary results are promising and show that 250 MEDI might be a sufficient cut-off to stimulate workers' sleep and cognition. The high illuminance level was not detrimental in the HCL condition for the perceived visual comfort. Key messages Blue-enriched morning light supports sleep and concentration in shift workers. High illuminance levels are not detrimental for the perceived visual comfort.

scholarly journals Analisis Kadar Glukosa Darah pada Pekerja Shift Pagi dan Shift Malam di PT. X Sidoarjo

2019 ◽  
Vol 2 (2) ◽  
pp. 116
Author(s):  
Yulia Indah Wulandari ◽  
Mulyono .
Keyword(s):  
Blood Glucose ◽  
Shift Work ◽  
Night Shift ◽  
Slow Rotation ◽  
Glucose Metabolism Disorders ◽  
Negative Effects ◽  
Shift Workers ◽  
Random Blood Glucose ◽  
Rotation Pattern ◽  
Morning Shift

Shift work, besides has several advantages also has a negative effects. The negatives effects are including physiological, social and performance effects. The physiological effects that arise among them such as blood glucose metabolism disorders which these risk may also occur to the shift workers. This study was conducted in PT. X at september 2015 aims to determine the pattern of PT. X shift working systems and also knows the difference between random blood glucose on morning shift and night shift workers at PT .X. This was a descriptive crossectional research. Sample in this study were using the total population of shift workers in Rolling Mill production unit who measured their random blood glucose levels while working on morning shift and the night shift and was not suffering from diabetes mellitus with total 26 respondents. The result showed that PT. X is applied weekly slow rotation and backward rotation pattern (night – day – morning) of shift working system.The difference between random blood glucose and blood pressure levels of the most respondents showed a higher levels while working on the night shift than morning shift. Based on the research, PT. X should apply a quick rotation and forward rotation pattern (morning – day – night) of shift working system and giving a 24 hours time rest at the end of night shift schedule. And they should held the routine exercise activity once a week at the plant and giving the explanation about the negative effects of the shift work to the related workers.

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