Effects of working permanent night shifts and two shifts on cognitive and psychomotor performance

Petru, Raluca; Wittmann, Marc; Nowak, Dennis; Birkholz, Bodo; Angerer, Peter

doi:10.1007/s00420-004-0585-3

Cited by 41 publications

(37 citation statements)

References 22 publications

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“…Thus, it is likely that the extended sleep sometimes associated with permanent night work is not related to complete circadian adaptation; a later circadian phase in permanent night workers, or a minor circadian adjustment, might explain the small increase (30-60 minutes) during daytime sleep. This is in line with the studies showing an association between permanent night work and having a preference for evenings (ie, "eveningness") (73,74). Permanent night workers are in many cases a highly select group, which includes individuals who have chosen such a shift system because they prefer to work at night (65).…”

Section: Studies On Permanent Night Worksupporting

confidence: 86%

Shift work, sleep, and sleepiness - differences between shift schedules and systems

Sallinen¹,

Kecklund²

2010

Scand J Work Environ Health

319

208

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Section: Studies On Permanent Night Worksupporting

confidence: 86%

Shift work, sleep, and sleepiness - differences between shift schedules and systems

Sallinen¹,

Kecklund²

2010

Scand J Work Environ Health

319

208

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“…Adolescents and young adults would greatly benefit (possibly with life-long positive consequences) if more attention were paid to their circadian biology, for example, if starting times in school were re-evaluated. Our results also support the necessity for adapting work schedules, i.e., allowing more flexible work times that address an employee's chronotype (Petru et al, 2005). With growing knowledge and awareness of the social importance of circadian biology, society must start adapting the temporal organization of society to the needs of human behavior and, thereby, overcome the discrepancy between social and biological timing, which we suggest be called 'social jetlag.'…”

Section: Consequences Of Social Jetlagsupporting

confidence: 66%

Social Jetlag: Misalignment of Biological and Social Time

Wittmann

Dinich

Merrow

et al. 2006

Chronobiology International

Self Cite

1,985

1,702

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Humans show large differences in the preferred timing of their sleep and activity. This so-called "chronotype" is largely regulated by the circadian clock. Both genetic variations in clock genes and environmental influences contribute to the distribution of chronotypes in a given population, ranging from extreme early types to extreme late types with the majority falling between these extremes. Social (e.g., school and work) schedules interfere considerably with individual sleep preferences in the majority of the population. Late chronotypes show the largest differences in sleep timing between work and free days leading to a considerable sleep debt on work days, for which they compensate on free days. The discrepancy between work and free days, between social and biological time, can be described as 'social jetlag.' Here, we explore how sleep quality and psychological wellbeing are associated with individual chronotype and/or social jetlag. A total of 501 volunteers filled out the Munich ChronoType Questionnaire (MCTQ) as well as additional questionnaires on: (i) sleep quality (SF-A), (ii) current psychological wellbeing (Basler Befindlichkeitsbogen), (iii) retrospective psychological wellbeing over the past week (POMS), and (iv) consumption of stimulants (e.g., caffeine, nicotine, and alcohol). Associations of chronotype, wellbeing, and stimulant consumption are strongest in teenagers and young adults up to age 25 yrs. The most striking correlation exists between chronotype and smoking, which is significantly higher in late chronotypes of all ages (except for those in retirement). We show these correlations are most probably a consequence of social jetlag, i.e., the discrepancies between social and biological timing rather than a simple association to different chronotypes. Our results strongly suggest that work (and school) schedules should be adapted to chronotype whenever possible.

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“…Small, large and epidemiological studies each report an association between ET and night work (Adan & Almirall, 1991;Paine et al, 2006;Petru et al, 2005).…”

Section: Adjustement To Shift Work and Jet Lagmentioning

confidence: 99%

Circadian Typology: A Comprehensive Review

Adán¹,

Archer²,

Hidalgo³

et al. 2012

Chronobiology International

1,035

855

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The interest in the systematic study of the circadian typology (CT) is relatively recent and has developed rapidly in the two last decades. All the existing data suggest that this individual difference affects our biological and psychological functioning, not only in health, but also in disease. In the present study, we review the current literature concerning the psychometric properties and validity of CT measures as well as individual, environmental and genetic factors that influence the CT. We present a brief overview of the biological markers that are used to define differences between CT groups (sleep-wake cycle, body temperature, cortisol, and melatonin), and we assess the implications for CT and adjustment to shift work and jet-lag. We also review the differences between CT in terms of cognitive abilities, personality traits and the incidence of psychiatric disorders. When necessary, we have emphasized the methodological limitations that exist today and suggested some future avenues of work in order to overcome these. This is a new field of interest to professionals in many different areas (research, labor, academic, and clinical) and this review provides a state of the art discussion to allow professionals to integrate chronobiological aspects of human behavior into their daily practice.

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Effects of working permanent night shifts and two shifts on cognitive and psychomotor performance

Cited by 41 publications

References 22 publications

Shift work, sleep, and sleepiness - differences between shift schedules and systems

Shift work, sleep, and sleepiness - differences between shift schedules and systems

Social Jetlag: Misalignment of Biological and Social Time

Circadian Typology: A Comprehensive Review

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