The impact of time of waking and concurrent subjective stress on the cortisol response to awakening

Williams, Emily; Magid, Kesson; Steptoe, Andrew

doi:10.1016/j.psyneuen.2004.06.006

Cited by 81 publications

(63 citation statements)

References 33 publications

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“…As expected (33)(34)(35)(36), individuals with earlier wakeup time showed a higher CAR, possibly because lower F0 concentrations early in the morning allowed for a greater hormone rise. Furthermore, a ceiling effect may exist when F0 values are elevated during the late-morning hours.…”

Section: Discussionsupporting

confidence: 72%

Salivary cortisol in a middle-aged community sample: results from 990 men and women of the KORA-F3 Augsburg study

Lederbogen

Kühner

Kirschbaum

et al. 2010

European Journal of Endocrinology

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Objective: Analysis of salivary cortisol concentrations and derived indices is increasingly used in clinical and scientific medicine. However, comprehensive data on these parameters in the general population are scarce. The aim of this study was to evaluate the concentrations of salivary cortisol in a large middle-aged community sample and to identify major factors associated with altered hormone levels. Design: We conducted a cross-sectional study within the Cooperative Health Research in the Region of Augsburg (KORA)-F3 study. A total of 1484 participants aged 50-69 years (52% women) had agreed to provide four saliva samples during a regular weekday. Methods: We measured salivary cortisol concentrations at wake-up (F0), 1

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Section: Discussionsupporting

confidence: 72%

Salivary cortisol in a middle-aged community sample: results from 990 men and women of the KORA-F3 Augsburg study

Lederbogen

Kühner

Kirschbaum

et al. 2010

European Journal of Endocrinology

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“…These results are in accordance with previous studies showing a positive association between sleep duration and higher cortisol levels at awakening (21)(22)(23). However, since there were no differences in cortisol levels after awakening between the workers on day shifts and the workers on night shifts in the period with "normal" light conditions, it seems that the external light conditions are more important than time of awakening and sleep duration.…”

Section: Discussionsupporting

confidence: 92%

Saliva cortisol levels in construction workers in the Arctic (78°N)

Harris¹,

Waage²,

Ursin³

et al. 2011

International Journal of Circumpolar Health

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Objectives. The aim was to investigate how working in an extreme and isolated environment in the Arctic affected the diurnal rhythm of saliva cortisol. Study design. Field study. Methods. Twenty-five male tunnel workers were screened during 3 different working cycles with different light conditions during a 9-month construction period; April/May (24 hours [h] light), September/October (approximately 12 h light and 12 h darkness) and November/December (24 h darkness). The work schedule was 10 h on/14 h off, 21 days at work/21 days off work. The workers alternated between the day shift in 1 work period and the night shift in the next. Four saliva samples were collected on day 14 in all 3 periods; immediately after awakening, and then 30 minutes, 6 hours and 12 hours after awakening. Results. Regardless of shift schedule, the workers' cortisol levels were significantly lower in the period with 24 hours of light per day compared to the period with "normal" light conditions. There were no differences in the cortisol levels of the workers on night shifts in the period with 24 hours of darkness compared to those in the period with "normal" light conditions, but the workers who were on day shifts in the period with 24 of hours darkness had a disturbed cortisol rhythm (lower peak after awakening and lack of the normal decrease during the day). Conclusions. External light conditions and shift schedule were important factors in regulating the workers' cortisol rhythm. It seems to be easier to adapt to a night rhythm than an early morning rhythm in an isolated and extreme environment.

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“…Room temperature, clothes, and bed clothes influence body temperature. Plasma concentration of melatonin is changed by oral administration of melatonin and that of cortisol varies with stress and anxiety (2,13,47). Thus these circadian rhythm markers occasionally did not reflect circadian rhythm per se.…”

Section: Discussionmentioning

confidence: 99%

Daily expression of clock genes in whole blood cells in healthy subjects and a patient with circadian rhythm sleep disorder

Takimoto¹,

Hamada²,

Tomoda³

et al. 2005

American Journal of Physiology-Regulatory, Integrative and Comp

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The impact of time of waking and concurrent subjective stress on the cortisol response to awakening

Cited by 81 publications

References 33 publications

Salivary cortisol in a middle-aged community sample: results from 990 men and women of the KORA-F3 Augsburg study

Salivary cortisol in a middle-aged community sample: results from 990 men and women of the KORA-F3 Augsburg study

Saliva cortisol levels in construction workers in the Arctic (78°N)

Daily expression of clock genes in whole blood cells in healthy subjects and a patient with circadian rhythm sleep disorder

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