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Single and aggregate salivary cortisol measures during two schooldays in midadolescent girls and boys
Stockholms universitet, Samhällsvetenskapliga fakulteten, Psykologiska institutionen. Stockholms universitet, Samhällsvetenskapliga fakulteten, Centrum för forskning om ojämlikhet i hälsa (CHESS).
Stockholms universitet, Samhällsvetenskapliga fakulteten, Psykologiska institutionen.
Stockholms universitet, Samhällsvetenskapliga fakulteten, Centrum för forskning om ojämlikhet i hälsa (CHESS).
Stockholms universitet, Samhällsvetenskapliga fakulteten, Psykologiska institutionen.
2014 (Engelska)Ingår i: PsyCh Journal, ISSN 2046-0252, E-ISSN 2046-0260, Vol. 3, nr 2, s. 121-131Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Abstract: The hypothalamic-pituitary-adrenal (HPA) axis, including its regulation of cortisol, is central to bodily functioning and salivary cortisol is a commonly used biomarker that reflects the functioning of the HPA axis. However, knowledge of diurnal cortisol rhythms in healthy adolescents is limited and few studies have examined patterns in midadolescent girls and boys across single and aggregate cortisol measures. To fill this gap, the present study investigated single and aggregate cortisol measures reflecting diurnal rhythms in 14 to 16-year-old girls and boys. Self-administered salivary samples from 79 girls and 42 boys were collected during two schooldays at four timepoints: (a) immediately at awakening, (b) 30 min after waking up, (c) 60 min after waking up, and (d) at 8:00 p.m. Additionally, diary data including time of awakening, sampling times, and other potential confounders were analyzed. As for single measures, both girls and boys exhibited a typical diurnal cortisol profile with high levels in the morning that decreased throughout the day. However, girls had higher morning cortisol than did boys with significant differences at time of awakening, and at 30 and 60 min postawakening. For the aggregate measures, girls had a larger total level of cortisol in terms of cortisol awakening response (CARG), area under the curve (AUCG), and rise over run (slopeawake to last), while no differences emerged for reactivity measures. Taken together, these findings suggest differences in single and aggregate cortisol measures between midadolescent girls and boys. Such differences in diurnal cortisol between pubertal girls and boys may play a role for the differential health trajectories typically found among adult women and men.

Ort, förlag, år, upplaga, sidor
2014. Vol. 3, nr 2, s. 121-131
Nyckelord [en]
adolescence; covariates; gender; salivary cortisol measures
Nationell ämneskategori
Psykologi (exklusive tillämpad psykologi)
Identifikatorer
URN: urn:nbn:se:su:diva-107164DOI: 10.1002/pchj.48OAI: oai:DiVA.org:su-107164DiVA, id: diva2:743658
Forskningsfinansiär
Forte, Forskningsrådet för hälsa, arbetsliv och välfärd, 2006-1637Tillgänglig från: 2014-09-04 Skapad: 2014-09-04 Senast uppdaterad: 2017-12-05Bibliografiskt granskad
Ingår i avhandling
1. Psychobiological functioning in mid-adolescent girls and boys: Linkages to self reported stress, self-esteem and recurrent pain
Öppna denna publikation i ny flik eller fönster >>Psychobiological functioning in mid-adolescent girls and boys: Linkages to self reported stress, self-esteem and recurrent pain
2014 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Among adolescents, the day-to-day functioning of the hypothalamo-pituitary-adrenal-axis (HPA-axis) and of the autonomic nervous system (ANS) and their relationships with stress, subjective health complaints and psychological factors such as self-esteem, studied in naturalistic settings, have been largely unexplored. This thesis aimed to investigate the diurnal activity of the HPA-axis (Studies I & II) in terms of salivary cortisol and the ANS/SNS system (Study III) in terms of salivary alpha-amylase (sAA) in mid-adolescent girls and boys. Additionally, linkages between self-reported stress, self-esteem, recurrent pain and biomarkers were investigated. A further aim was to describe potential differences between girls and boys respectively. Study I showed that both girls and boys exhibited the typical diurnal cortisol profile with high levels in the morning that decreased throughout the day. Girls had higher total cortisol levels, while no differences emerged for measures of the cortisol increase. Study II showed no significant linkages between self-ratings of stress and cortisol. However, stress was associated with recurrent pain in girls. Study III showed that, for girls, both self-esteem and self-reported stress were related to morning levels of both cortisol and sAA, to the diurnal sAA output and to a conjoint measure of amylase over cortisol, AOC. To conclude, the findings suggest that both stress and self-esteem may be linked to different measures of ANS and HPA-axis activity, but also to measures of ANS and HPA-axis dysregulation, particularly among mid-adolescent girls.

Ort, förlag, år, upplaga, sidor
Stockholm: Department of Psychology, Stockholm University, 2014. s. 103
Nyckelord
Adolescents, Cortisol, Alpha-amylase, Stress, Self-esteem, Recurrent pain
Nationell ämneskategori
Psykologi (exklusive tillämpad psykologi)
Forskningsämne
psykologi
Identifikatorer
urn:nbn:se:su:diva-107167 (URN)978-91-7447-980-5 (ISBN)
Disputation
2014-10-10, David Magnussonsalen (U31), Frescati Hagväg 8, Stockholm, 10:00 (Svenska)
Opponent
Handledare
Anmärkning

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Manuscript. Paper 3: Manuscript.

Tillgänglig från: 2014-09-18 Skapad: 2014-09-04 Senast uppdaterad: 2017-05-03Bibliografiskt granskad

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Folkesson, LisaÖstberg, VivecaLindfors, Petra
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Psykologiska institutionenCentrum för forskning om ojämlikhet i hälsa (CHESS)
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PsyCh Journal
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