Sleep disturbance and work stress in Brazilian female shift workers

Abstract Introduction Despite a growing need for nighttime work, few studies have characterized the causes of sleep disturbance in night shift workers beyond circadian misalignment. Recent research suggest that high sleep reactivity to stress (a predisposition for sleep disturbance due to stress) may also lead to sleep difficulties in shift workers. This study investigated if sleep reactivity is an independent predictor of daytime sleep disturbances after controlling for circadian phase. Methods Night shift workers (N= 48) completed an 8 hour polysomnography (PSG) during the daytime following a night shift (9am - 4pm). Circadian phase was measured using melatonin assays of saliva samples collected over 24 hours under dim light (<10 lux; Dim Light Melatonin Onset [DLMO]). Sleep reactivity was measured using the Ford Insomnia Response to Stress Test (FIRST). Linear regressions were conducted with PSG sleep parameters as outcome variables: difficulty falling asleep (Sleep Onset Latency [SOL] and Latency to Persistent Sleep [LPS]), difficulty staying asleep (Wake After Sleep Onset [WASO]), and sleep duration (Total Sleep Time [TST]). FIRST was tested as a predictor controlling for DLMO. Results After controlling for circadian phase, higher FIRST scores was associated with more difficulty staying asleep (WASO: t[45]=4.059, p<0.001) and shorter sleep duration (TST: t[45] = -4.403, p<0.0001), but not predictive of difficulty falling asleep (SOL: p>0.05). However, higher FIRST scores did predict a longer latency to persistent sleep (LPS: t[45]=2.272, p<0.05). Conclusion These results suggest that sleep reactivity to stress and circadian misalignment are independent processes that are both associated with disrupted daytime sleep in night shift workers. Given that night shift work can also cause psychosocial stress, treatments focused on circadian misalignment alone may not be sufficient. Our study highlights the need to consider sleep reactivity in the clinical management of shift work disorder. Support Support for this study was provided to PC by NHLBI (K23HL138166).

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Sleep Reduction in Night-Shift Workers: Is it Sleep Deprivation or a Sleep Disturbance Disorder?

Perceptual and Motor Skills ◽

10.2466/pms.1990.70.3.723 ◽

1990 ◽

Vol 70 (3) ◽

pp. 723-730 ◽

Cited By ~ 8

Author(s):

Robert P. Mahan ◽

Antonio B. Carvalhais ◽

Stephen E. Queen

Keyword(s):

Sleep Deprivation ◽

Sleep Disturbance ◽

Night Shift ◽

Shift Workers

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0064 Heightened Neural Responses to Negative Words in Shift Workers Using the Stroop Task

SLEEP ◽

10.1093/sleep/zsaa056.062 ◽

2020 ◽

Vol 43 (Supplement_1) ◽

pp. A26-A26

Author(s):

K Lee ◽

H Lee ◽

J Jeon ◽

S Jeon ◽

N Kim ◽

...

Keyword(s):

Sleep Disturbance ◽

Shift Work ◽

Stroop Task ◽

Negative Impact ◽

Health Problems ◽

Neural Response ◽

Negative Information ◽

Anterior Cingulate ◽

Shift Workers ◽

Wide Range

Abstract Introduction Shift work is known to have a negative impact on a wide range of health problems such as sleep disturbance, cognitive impairment, and emotional disorders (e.g., anxiety and depression). It is important to understand underlying mechanisms for negative impact of shift work on health problems. This study aimed to investigate psychological and neural mechanisms associated with shift work. Methods Thirty six shift workers (28 females, age = 29.9 ± 7.4) and 35 non-shift workers (20 females, age = 30.5 ± 5.5) participated in this study. They were performing the word Stroop task during fMRI scanning. This task included sleep-related words and negative words to investigate neural substrates associated with sleep-related information and emotional information processing. Neutral words were included as control stimuli. The participants also completed questionnaires assessing sleep-related problems such as Pittsburgh Sleep Quality Index (PSQI) and Epworth Sleepiness Scale, and emotion-related problems such as Beck Depression Inventory and Beck Anxiety Inventory. Two-sample t-tests were conducted to find group differences in self-report measures and neural response to sleep-related words and negative words compared to neutral words. Results Relative to non-shift workers, shift workers showed greater sleep disturbance (i.e., higher PSQI), but they did not show any evidence of emotion-related problems. Shift workers also demonstrated greater neural response to negative words (vs. neutral words) in several prefrontal regions (e.g., dorsal anterior cingulate cortex and dorsolateral prefrontal cortex), anterior insula and caudate compared to non-shift workers. However, shift workers did not show significantly different neural response to sleep-related words (vs. neutral words) compared to non-shift workers. Conclusion The result from this study provides supporting evidence that shift work is associated with subjective sleep disturbance. Shift workers’ heightened neural response to negative information may reflect their increased sensitivity to negative information, that may contribute to sleep disturbance. Support Brain Research Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning (Study No.: 2016M3C7A1904338 and NRF-2018R1D1A1B07049704).

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HUBUNGAN GANGGUAN TIDUR PADA PEKERJA SHIFT DENGAN KEJADIAN KECELAKAAN KERJA DI TERMINAL PETIKEMAS

The Indonesian Journal of Occupational Safety and Health ◽

10.20473/ijosh.v7i1.2018.72-80 ◽

2018 ◽

Vol 7 (1) ◽

pp. 72

Author(s):

Ayu Wanda Saraswati ◽

Indriati Paskarini

Keyword(s):

Sleep Disturbance ◽

Social Life ◽

Night Shift ◽

Health And Safety ◽

Primary Data ◽

Chi Square ◽

Shift Workers ◽

Cargo Handling ◽

Work Accident ◽

The Relationship

Working at night can causes some impacts on shift worker’s life, such as their health, safety and also social life. Sleep disturbance is one of the impacts from working at night, and it will influenced their health and safety, as well as the social life of shift workers. This condition will increased the risk of work accident on night shift. The purpose of this research is to study the relationship between sleep disturbance and work accident at cargo handling terminal. This research is categorized as case-control research, and using primary data that retrieved by giving questionnaires to the shift workers. The result of statistical test which using Chi-Square test shows that there is a relationship between sleep disturbance in shift workers and the work accident at cargo handling terminal (0.0015 <0.005). The relationship value between this two variable is 0.322. The effort that can be done to lower the sleep disturbance is doing a good combination of adequate hours of sleep and proper consumption of caffeine. Keywords: accident, loading and dismantling container port, night work, shift worker, sleep disturbance.

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