Work schedules and sleep

Åkerstedt, Torbjörn

doi:10.1007/bf01952374

Cited by 60 publications

(23 citation statements)

References 37 publications

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“…This has been demonstrated in a number of studies of conventional shift work or roster schedules (cf. Akerstedt 1984). Watchkeeping schedules at sea appear to have similar effects (cf.…”

Section: Introductionmentioning

confidence: 77%

Sleep at sea: a diary study of the effects of unattended machinery space watch duty

Torsvall

Castenfors²,

Åkerstedt

et al. 1987

Ergonomics

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Forty-nine engineer officers in the Swedish merchant marine were asked to keep a sleep/wake diary during one tour of duty (1-3 months) on ocean-going container ships. Every 2-4 nights the officers had watch duty during which they were allowed to sleep but were awakened by an automatic alarm system in the case of machinery malfunction. The diaries showed that 40% of all nights at sea were spent on such watch duty. Fifteen per cent of all nights were disturbed by alarms (and 13% for other reasons). Having watch duty, particularly with alarms, reduced ratings of sleep length (-1.5 h), sleep quality and recuperation. The latter was also negatively affected by the frequency of watch duty. Of particular interest was the fact that nights on watch were also perceived as disturbed when no alarms occurred. Such nights were also characterized by a higher level of uneasiness. It was conciuded that the watch duty system significantly affected sleep and well-being, and that these effects appeared irrespective of whether any alarms occurred. The latter was interpreted as an effect of apprehension stress.

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“…This has been demonstrated in a number of studies of conventional shift work or roster schedules (cf. Akerstedt 1984). Watchkeeping schedules at sea appear to have similar effects (cf.…”

Section: Introductionmentioning

confidence: 77%

Sleep at sea: a diary study of the effects of unattended machinery space watch duty

Torsvall

Castenfors²,

Åkerstedt

et al. 1987

Ergonomics

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“…Three questions on sleep disturbance were included in the questionnaire, which was adapted from a previous sleep quality questionnaire ( 2 ). The questions covered diffi culty in falling asleep at night, waking up repeatedly during the night, and waking up too early and having diffi culty in getting to sleep again ( 13 ).…”

Section: Insomniamentioning

confidence: 99%

Digestive Functional Symptoms Among Commercial Pilots in Relation to Diet, Insomnia, and Lifestyle Factors

Lindgren¹,

Runeson²,

Wahlstedt³

et al. 2012

Aviation, Space, and Environmental Medicine

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“…A number of survey studies have indicated that shift workers have difficulties ,mainly at maintaining sleep after the night shift and initiating sleep before the morning shift (13). The afternoon shift has usually presented no sleep problems.…”

Section: Sleepmentioning

confidence: 99%

“…Sleep studies of shift workers have mostly been carried out in the laboratory (13). Recently, however , some stud ies of shift workers' sleep have been made in the workers' natural sleeping environment (15)(16)(17).…”

Section: Sleepmentioning

confidence: 99%