| 1. |
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| 2. |
- Belenky, Gregory, et al.
(författare)
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Introduction
- 2016. - 6
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Ingår i: Principles and Practice of Sleep Medicine. - : Elsevier. - 9780323242882 ; , s. 679-681
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 3. |
- Belenky, G, et al.
(författare)
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Occupational Sleep Medicine, introduction
- 2011
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Ingår i: Principle and Practice of Sleep Medicine. - St. Louise : Elisevier Saunders. - 9781416066453 ; , s. 1723-
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Bokkapitel (refereegranskat)
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| 4. |
- Garde, Anne Helene, et al.
(författare)
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Sleep and Salivary Cortisol
- 2012
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Ingår i: The Role of Saliva Cortisol Measurement in Health and Disease. - : Bentham eBooks. - 9781608053421 - 9781608050710 ; , s. 116-128
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The aim of the present chapter was to analyze whether measures of cortisol in saliva were associated with measures of sleep and to explore if divergent results were related to underlying differences in theoretic assumptions and methods. Measures of sleep quality included sleep duration, overall sleep quality, difficulty falling asleep, disturbed sleep, and sleep deprivation. Twenty-three papers were found to fulfil the inclusion criteria. Cortisol measures were grouped into single time points at different times during the day, deviations at different time periods during the day, reactivity and recovery after a standardized laboratory test, area under the curve and response to dexamethasone test. A large proportion of the studies included showed nonsignificant findings, which, in several cases, may be a result of low power. The most consistent results were a positive association between sleep duration and single measures of salivary cortisol at awakening, which was observed in 3 studies. In these studies, sleep duration was also associated with low evening cortisol levels, steep diurnal deviation of cortisol and/or high area under the curve. Together these findings suggest that longer sleep duration is related to a more dynamic cortisol secretion. Two of the 6 studies on disturbed or restless sleep showed relations to flat diurnal deviation and low laboratory stress test reactivity. This to some extent corroborates the findings on sleep duration. However, the many nonsignificant findings as well as the theoretical and methodological differences (e.g., heterogeneity in measures) complicate comparisons. Conflicting results may be at least partially due to differences in methods and underlying assumptions.
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| 5. |
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| 6. |
- Sandberg, David, 1980, et al.
(författare)
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The impact of sleepiness on lane positioning in truck driving
- 2013. - 1
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Ingår i: Driver Distraction and Inattention. - Farnham : Ashgate. - 9781409425854 - 9781315578156 ; 1, s. 405-416
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Bokkapitel (refereegranskat)abstract
- This chapter concerns the detection of sleepiness in truck drivers. Data obtained from a driver sleepiness study involving real-world driving are used in order to analyse the performance of several sleepiness indicators based on driving behavior; such as, for example, variability in lateral position and heading angle. Contrary to the results obtained for passenger cars, for heavy trucks it is found that indicators based on variability provide little or no information; their performance does not rise significantly above chance levels.However, the data indicate that there is a significant difference in the average lane position for sleepy and alert drivers, respectively, such that a sleepy driver generally places the vehicle closer (by about 0.2 m) to the centre of the road than an alert driver. The analysis also shows a significant, monotonous, increase in average lateral position (measured from the right, outer, lane boundary towards the lane centre) between the four cases of (i) daytime alert driving, (ii) daytime sleepy driving, (iii) night-time alert driving and (iv) nighttime sleepy driving.
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| 7. |
- Åkerstedt, Torbjörn
(författare)
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Arbete som stör dygnsrytmen
- 2008
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Ingår i: Arbetslivsfysiologi. - : Studentlitteratur, Lund. - 9789144046266 ; , s. 279-306
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Bokkapitel (populärvet., debatt m.m.)
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| 8. |
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| 9. |
- Åkerstedt, Torbjörn, 1946-, et al.
(författare)
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Night Shiftwork
- 2007. - 2
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Ingår i: The Encyclopedia of Stress. - : Academic Press. - 0120885034 ; , s. 917-920
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Bokkapitel (refereegranskat)
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| 10. |
- Åkerstedt, Torbjörn
(författare)
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Occupational Impact
- 2013
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Ingår i: Encyclopedia of Sleep. - : Academic Press. - 9780123786104 - 9780123786111 ; , s. 308-310
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Bokkapitel (refereegranskat)abstract
- Occupational impact on sleep is mostly associated with psychosocial factors. In particular, high work demands (stress) lead to increased activation, which causes difficulties initiating or maintaining sleep. At severe levels, characterized by preoccupation with the work situation, sleep is strongly affected and may in the long run lead to burnout, with very poor sleep (far beyond that of the insomniac) and extreme exhaustion. Physical work factors seem to have only marginal effects on sleep.
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