The effects of different roster schedules on sleep in miners

Paech, Gemma M.; Jay, Sarah M.; Lamond, Nicole; Roach, Gregory D.; Ferguson, Sally A.

doi:10.1016/j.apergo.2009.12.017

Cited by 61 publications

(51 citation statements)

References 44 publications

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“…This contrasts with similar amount of S2 sleep and SWS during daytime and nighttime sleep periods in the adapted officers. The results observed in the non-adapted officers are consistent with the reduced TST observed in prior studies reporting subjective [7] and objective [4], [5], [8], [14], [59] measures of sleep in shift workers. The TST was reduced by 72 min (6.7 h vs. 8.6 h) in miners [4] and by 104 min (4.6 h vs. 6.3 h) in nurses [59] working at night compared to their days off.…”

Section: Discussionsupporting

confidence: 90%

“…Night work has been associated with reduced sleep duration [3]–[8], typically ranging from 4–7 h, symptoms of insomnia during the main sleep period [9], and sleepiness across wake periods [5], [10]–[12]. Slower performance at work [10], [13]–[18], especially when measured during the first night shift [19]–[21], has also been reported.…”

Section: Introductionmentioning

confidence: 99%

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Circadian Adaptation to Night Shift Work Influences Sleep, Performance, Mood and the Autonomic Modulation of the Heart

2013

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Our aim was to investigate how circadian adaptation to night shift work affects psychomotor performance, sleep, subjective alertness and mood, melatonin levels, and heart rate variability (HRV). Fifteen healthy police officers on patrol working rotating shifts participated to a bright light intervention study with 2 participants studied under two conditions. The participants entered the laboratory for 48 h before and after a series of 7 consecutive night shifts in the field. The nighttime and daytime sleep periods were scheduled during the first and second laboratory visit, respectively. The subjects were considered “adapted” to night shifts if their peak salivary melatonin occurred during their daytime sleep period during the second visit. The sleep duration and quality were comparable between laboratory visits in the adapted group, whereas they were reduced during visit 2 in the non-adapted group. Reaction speed was higher at the end of the waking period during the second laboratory visit in the adapted compared to the non-adapted group. Sleep onset latency (SOL) and subjective mood levels were significantly reduced and the LF∶HF ratio during daytime sleep was significantly increased in the non-adapted group compared to the adapted group. Circadian adaptation to night shift work led to better performance, alertness and mood levels, longer daytime sleep, and lower sympathetic dominance during daytime sleep. These results suggest that the degree of circadian adaptation to night shift work is associated to different health indices. Longitudinal studies are required to investigate long-term clinical implications of circadian misalignment to atypical work schedules.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Circadian Adaptation to Night Shift Work Influences Sleep, Performance, Mood and the Autonomic Modulation of the Heart

2013

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“…Total sleep time between day and night shifts did not differ and was consistent with numerous other reports in 12-hour shifts -both in camp and residential settings (Tucker, Smith et al 1999;Ferguson, Baker et al 2010;Paech, Jay et al 2010). Together, the literature indicates that 12-hour shifts are associated with approximately six hours of sleep.…”

Section: Discussionsupporting

confidence: 90%

Fatigue Risk Management: A Case Study

McCulloch¹,

Kontou

Ferguson

2012

All Days

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Shiftwork is a common activity across oil and gas operations. One of the biggest threats associated with shiftwork is fatigue-related impairment. While the relationship between fatigue and safety risk are widely acknowledged, the practical implications and management practices within the oil and gas industry are not well understood, practiced or monitored. This paper will explore the prevalence and nature of fatigue-related impairment in a small population of oil and gas workers. Data will be presented on actual work hours, sleep quality and quantity, and the relationship with performance impairment. Data was collected using questionnaires, work, sleep and symptom diaries, wrist activity monitors and psychomotor vigilance tasks using a hand held palm pilot.The results portray the difference in risk profile across a two week period of 12-hour night shifts, contrasted against a twoweek period of 12-hour day shifts. The results draw attention to high-risk periods across a shift work roster, and propose targeted management strategies using the hierarchy of control. The paper concludes with areas for further research and industry collaboration.

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“…In another work by our group, we found that this sample of shift workers slept approximately 20 min fewer than day workers when sleep duration was averaged across the entire week (including work shifts and free days) 16. The reason for this relatively small difference is because shift workers slept considerably longer than day workers on free days, a finding that is consistent with previous research 30. Although shift workers ‘catch up’ on sleep on free days, it is conceivable that a repeated pattern of sleep restriction on work shifts increases cardiovascular and metabolic disease risk.…”

Section: Discussionsupporting

confidence: 89%