Influence of shift work on cognitive performance in male business process outsourcing employees

Shwetha, Bijavara; Sudhakar, H. H.

doi:10.4103/0019-5278.111751

Cited by 12 publications

(11 citation statements)

References 16 publications

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“…The obtained results were consistent with the first hypothesis that predicted a decline in cognitive performance at the end of both shifts and a lower level of performance on the night shift in comparison with the day shift. Although these variables have not been examined in a field study in previous research, the findings of the current study were generally in line with those reported in previous studies regarding cognitive performance [ 5 13 14 15 ]. In Machi et al’s study conducted among emergency physicians, short-term memory showed a significant decrease at the end of both day and night shifts [ 16 ].…”

Section: Discussionsupporting

confidence: 92%

Effects of Shift Work on Cognitive Performance, Sleep Quality, and Sleepiness among Petrochemical Control Room Operators

Kazemi

Haidarimoghadam

Motamedzade

et al. 2016

Journal of Circadian Rhythms

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Shift work is associated with both sleepiness and reduced performance. The aim of this study was to examine cognitive performance, sleepiness, and sleep quality among petrochemical control room shift workers. Sixty shift workers participated in this study. Cognitive performance was evaluated using a number of objective tests, including continuous performance test, n-back test, and simple reaction time test; sleepiness was measured using the subjective Karolinska Sleepiness Scale (KSS); and sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI) questionnaire. ANCOVA, t-test, and repeated-measures ANOVA were applied for statistical analyses, and the significance level was set at p < 0.05. All variables related to cognitive performance, except for omission error, significantly decreased at the end of both day and night shifts (p < 0.0001). There were also significant differences between the day and night shifts in terms of the variables of omission error (p < 0.027) and commission error (p < 0.036). A significant difference was also observed between daily and nightly trends of sleepiness (p < 0.0001) so that sleepiness was higher for the night shift. Participants had low sleep quality on both day and night shifts, and there were significant differences between the day and night shifts in terms of subjective sleep quality and quantity (p < 0.01). Long working hours per shift result in fatigue, irregularities in the circadian rhythm and the cycle of sleep, induced cognitive performance decline at the end of both day and night shifts, and increased sleepiness in night shift. It, thus, seems necessary to take ergonomic measures such as planning for more appropriate shift work and reducing working hours.

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Section: Discussionsupporting

confidence: 92%

Effects of Shift Work on Cognitive Performance, Sleep Quality, and Sleepiness among Petrochemical Control Room Operators

Kazemi

Haidarimoghadam

Motamedzade

et al. 2016

Journal of Circadian Rhythms

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“…In CPT, response inhibition is measured by the number of responses given to non-targets (i.e., Xs). The poorer performance of shift workers during response inhibition is in line with evidence from the literature [12,[43][44][45]. The poor performance of shift workers during response inhibition could be attributed to disturbed functioning of the prefrontal region of the brain as a result of sleep deprivation, which shift workers experience.…”

Section: Discussionsupporting

confidence: 85%

“…The poor performance of shift workers during response inhibition could be attributed to disturbed functioning of the prefrontal region of the brain as a result of sleep deprivation, which shift workers experience. Also, the deleterious effects of chronic stress on neuropsychological functions such as mental speed, learning, and memory are significant [45]. Sleep deprivation lowers inhibition and enhances impulsivity to negative stimuli.…”

Section: Discussionmentioning

confidence: 99%

The Influence of Shift Work on the Quality of Sleep and Executive Functions

Athar

Atef-Vahid

Ashouri

2020

Journal of Circadian Rhythms

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Shift work is an inconsistent and atypical work schedule. This study aimed to investigate the influence of shift work on the Quality of Sleep (QOS) and Executive Functions (EF). Thirty shift workers and thirty day workers first completed a demographic questionnaire. They then were tested using the Pittsburgh Sleep Quality Index (PSQI) and EF tests, including the Corsi Block-Tapping Task (CBTT), Berg's Card Sorting Task (BCST), and the Continuous Performance Task (CPT). Results were subjected to non-parametric Chi-Square Tests, the Mann-Whitney U Test, and Independent T-Tests. Shift workers had significantly poorer sleep quality than day workers, which was shown in PSQI global scale (p = 0.001), sleep duration (p = 0.042), habitual sleep efficiency (p = 0.021), and sleep disturbance (p =0.021). Concerning EF tests, shift workers performed significantly poorer on CBTT (p = 0.019) and BCST (p =0.015, 0.047) compared with day workers. Significant differences were also observed between shift workers and day workers in terms of variables of omission errors (p = 0.037) and commission errors (p = 0.041) on CPT, but no significant difference was found between shift workers and day workers in reaction time (p = 0.561). Shift work impaired EF. These findings are related to shift workers' poorer sleep and its detrimental effects on areas of the brain, which are critical for EF, such as the prefrontal area. Our results suggest the evaluation and implication of practices and policies to assuage the consequences of working in shifts.

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“…Moreover, in some studies, electrophysiological measures by electroencephalography and the determination in biological matrices of different hormones such as growth hormone (GH), cortisol and its precursors, prolactin (PRL), thyroid-stimulating hormone (TSH) and melatonin were also carried out in order to analyze the possible physio-pathological mechanisms underlying the observed alterations of cognitive domains. Importantly, in these studies, the potential role of different parameters that are recognized risk factors for the cognitive decline (e.g., age, family history for dementia and/or related diseases, hypertension, cerebral vasculopathies, metabolic syndrome, disorders of sleep and mood, physical inactivity, social isolation, lower education level and psychosocial factors) and that could represent confounding factors in the interpretation of the results have been often verified, albeit in quite different ways and combinations [ 7 , 8 , 21 , 25 , 26 , 27 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 ]. Finally, most of the articles have studied the short-term effects of shift work, while few studies have analyzed the possible impact of long-term chronic exposure on cognition [ 27 , 31 , 46 , 47 , 48 , 49 , 50 , ...…”

Section: Resultsmentioning

confidence: 99%

Impact of Shift Work and Long Working Hours on Worker Cognitive Functions: Current Evidence and Future Research Needs

Leso

Fontana

Caturano

et al. 2021

IJERPH

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Particular working conditions and/or organization of working time may cause important sleep disturbances that have been proposed to be predictive of cognitive decline. In this regard, circadian rhythm misalignment induced by exposure to night work or long working hours would be responsible for cognitive impairment. Nevertheless, evidence supporting this correlation is limited and several issues still need to be elucidated. In this regard, we conducted a systematic review to evaluate the association between shift/night work and cognitive impairment and address its main determinants. Information provided by the reviewed studies suggested that night work might have serious immediate negative effects especially on cognitive domains related to attention, memory and response inhibition. Furthermore, cognitive performance would progressively worsen over consecutive night shifts or following exposure to very long work shifts. Otherwise, conflicting results emerged regarding the possible etiological role that night work chronic exposure would have on cognitive impairment. Therefore, circadian rhythm desynchronization, lack of sleep and fatigue resulting from night work may negatively impact worker’s cognitive efficiency. However, in light of the considerable methodological variability of the reviewed studies, we proposed to develop a standardized research and evaluation strategy in order to obtain a better and comprehensive understanding of this topic.

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Influence of shift work on cognitive performance in male business process outsourcing employees

Cited by 12 publications

References 16 publications

Effects of Shift Work on Cognitive Performance, Sleep Quality, and Sleepiness among Petrochemical Control Room Operators

Effects of Shift Work on Cognitive Performance, Sleep Quality, and Sleepiness among Petrochemical Control Room Operators

The Influence of Shift Work on the Quality of Sleep and Executive Functions

Impact of Shift Work and Long Working Hours on Worker Cognitive Functions: Current Evidence and Future Research Needs

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