Rotating Shift Work Schedules That Disrupt Sleep Are Improved by Applying Circadian Principles

Czeisler, Charles A.; Moore‐Ede, Martin C.; Coleman, Richard M.

doi:10.1126/science.7089576

Cited by 230 publications

(112 citation statements)

References 19 publications

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“…As early as 1982, Czeisler et al (21) reported that, by changing from backward to forward rotation, the health index score of the workers increased favorably. Compared with forward rotation shift systems, backward rotation systems have further been associated with poorer physical and psychological health, including chronic fatigue (16), more unfavorable cardiac autonomic control (25), adverse changes in self-rated health, duration and quality of sleep, and unhealthy systolic blood pressure, serum glucose, uric acid and triglyceride levels (26).…”

Section: Derection Of Shift Rotation Health and Work-family Conflictmentioning

confidence: 99%

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Direction of shift rotation among three-shift workers in relation to psychological health and work-family conflict

Amelsvoort¹,

Jansen²,

Swaen³

et al. 2004

Scand J Work Environ Health

111

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van Amelsvoort LGPM, Jansen NWH, Swaen GMH, van den Brandt PA, Kant I. Direction of shift rotation among three-shift workers in relation to psychological health and work-family conflict. Scand J Work Environ Health 2004;30(2):149-156. ObjectivesThe aim of the present study was to investigate whether the direction of shift rotation was related to the need for recovery, fatigue, sleep quality, work-family conflict, and leisure time among three-shift workers.Methods Data of 95 workers in forward-rotating three-shift work and 681 workers in backward-rotating threeshift work, with 32 months of follow-up, in the Maastricht cohort study (N=12 095) were used. Both crosssectional and longitudinal analyses were carried out.Results A backward rotation schedule was prospectively related to an increased need for recovery [relative risk (RR) 2.88, 95% confidence interval (95% CI) 1.06-7.81] and poor general health (RR 3.21, 95% CI 1.32-7.83), as compared with a forward rotation schedule. Adjustment for demographic and health variables and the characteristics of the work environment did not alter these relations considerably. Furthermore, a forward rotation schedule was prospectively related to less work-family conflict and better sleep quality over the 32 months of follow-up. Finally, high levels of fatigue, need for recovery, poor sleep quality, poor general health, insufficient leisure time, and work-family conflict at first measurement were associated with an increased risk of leaving shiftwork during the follow-up. ConclusionsOptimization of shiftwork schedules, in terms of shift rotation, seems a promising method for decreasing the negative impact accompanying shiftwork. Future studies should investigate whether these findings for three-shift workers are applicable to other shiftwork schedules as well. Furthermore, this study clearly illustrates the existence of secondary selection processes among shiftworkers and thereby emphasizes the complexity of valid shiftwork research.

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Section: Derection Of Shift Rotation Health and Work-family Conflictmentioning

confidence: 99%

“…To decrease the potential adverse health effects of shiftwork, the application of healthier shift systems has been suggested (16,(21)(22)(23). One of the possibilities within three-, four-, five-, or six-shift work is the choice for forward or backward rotation of shift schedules.…”

mentioning

confidence: 99%

Direction of shift rotation among three-shift workers in relation to psychological health and work-family conflict

Amelsvoort¹,

Jansen²,

Swaen³

et al. 2004

Scand J Work Environ Health

111

View full text Add to dashboard Cite

show abstract

“…This process of "quick changeovers" tends to increase absenteeism on shift-change days (Harrington, 1978). A study by Czeisler, et al (1982) found that industrial plant workers on rotating shift schedules who had a longer rotation period (21 days) compared to those who had a shorter rotation period (weekly rotation) showed increases in job satisfaction, productivity and improvements in health.…”

Section: Work Schedulesmentioning

confidence: 99%

Organizational stressors and police performance

Shane

2010

Journal of Criminal Justice

287

281

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The evidence on police stress is mixed as to whether or not the nature of police work is inherently stressful. A growing body of research suggests police officers are no more stressed than other groups and police work is not especially stressful. Instead, organizational stressors may be the greatest source of stress in police officers. Various structural arrangements, policies and practices imply police agencies can be inhospitable workplaces, where officers must withstand a variety of daily hassles generated internally by the organization.

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“…Adaptation to phase-delayed schedules is easier than with phase-advanced schedules for the same reason that east-to-west transmeridian flight causes fewer jet lag symptoms than does west-to-east transmeridian flight (Melton, 1986). Czeisler (1982) therefore recommends a clockwise rotation (morning-afternoon-night) or phase-delayed rotation for rotating shift workers. The human free-running period of the sleep-wake cycle averages 25 hours; consequently, only a small phase advance with respect to the environment is allowed, but a two-to three-hour phase delay is required.…”

Section: Statement Of Problemmentioning

confidence: 99%

“…Other studies (Hawkins, 1987) also were conducted to try to find solutions to the problem of circadian dysrhythmia, and in 1982 the results of one study described a type of shift work rotation pattern designed to account for circadian rhythms and reduce the onset of internal disassociation (Czeisler, 1982). In recent years, however, agreements between the Federal Aviation Administration (FAA) management and controller unions have allowed controllers the option of working an alternate work schedule (AWS) consisting of various combinations of rotations and daily work hours.…”

Section: Statement Of Problemmentioning

confidence: 99%

Human Circadian Rhythms and the Shift Work Practices of Air Traffic Controllers

McAdaragh¹

1995

JAAER

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This research investigates human circadian rhythms and describes how they are affected by different types of shift work rotation patterns. Past studies have indicated that air traffic controllers prefer to work the type of rotation patterns that induce the negative result of circadian dysrhythrnia. It has been established that workers experience decrements in performance from this condition. Recently, an alternate work schedule has allowed controllers to work new various rotation patterns, some of which disrupt circadian processes even more than previously preferred schedules. A descriptive analysis of controller work schedules from randomly selected facilities indicates that 16% of controllers are working the most disruptive type of schedules and that another 29% are working other dysrhythmia-inducing shift rotations. It is concluded that performance deficiencies are highly probable among these controllers and that tests should be conducted to determine the significance of the effect.

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Rotating Shift Work Schedules That Disrupt Sleep Are Improved by Applying Circadian Principles

Cited by 230 publications

References 19 publications

Direction of shift rotation among three-shift workers in relation to psychological health and work-family conflict

Direction of shift rotation among three-shift workers in relation to psychological health and work-family conflict

Organizational stressors and police performance

Human Circadian Rhythms and the Shift Work Practices of Air Traffic Controllers

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