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Journal of Abnormal Child Psychology

, Volume 47, Issue 4, pp 571–587 | Cite as

Age-Adapted Stress Task in Preschoolers Does not Lead to Uniform Stress Responses

  • Kerstin Stülb
  • Nadine Messerli-Bürgy
  • Tanja H. Kakebeeke
  • Amar Arhab
  • Annina E. Zysset
  • Claudia S. Leeger-Aschmann
  • Einat A. Schmutz
  • Andrea H. Meyer
  • David Garcia-Burgos
  • Ulrike Ehlert
  • Susi Kriemler
  • Oskar G. Jenni
  • Jardena J. Puder
  • Simone MunschEmail author
Article

Abstract

Acute stress response measures serve as an indicator of physiological functioning, but have previously led to contradictory results in young children due to age-related cortisol hypo-responsivity and methodological inconsistencies in assessment. The aim of this study was to investigate stress responses during a validated age-adapted socio-evaluative stress task in children aged 2-6 years in a child care environment and to detect socio-demographic, task- and child-related characteristics of stress responses. Stress responses were assessed in 323 children for salivary cortisol and salivary alpha amylase (sAA), and in 328 children for changes in heart rate variability (HRV). These data were then associated with socio-demographic (e.g. SES), task-related (e.g. task length) and child-related characteristics (e.g. self-regulation) of stress responses using multilevel models. Analyses revealed elevated sympathetic reactivity (sAA: Coeff=0.053, p=0.004) and reduced HRV (Coeff=-0.465, p<0.001), but no hypothalamic-pituitary-adrenal (HPA) response (Coeff=0.017, p=0.08) during the stress task. Child's age (Coeff=-5.82, p<0.001) and movement during the task (Coeff=-0.17, p=0.015) were associated with acute cortisol release, while diurnal sAA was associated with acute sAA release (Coeff=0.24, p<0.001). Age (Coeff=-0.15, p=0.006) and duration of the task (Coeff=0.13, p=0.015) were further associated with change of HRV under acute stress condition. Children showed inconsistent stress responses which contradicts the assumption of a parallel activation of both stress systems in a valid stress task for young children and might be explained by a pre-arousal to the task of young children in a child care setting. Further results confirm that child- and task-related conditions need to be considered when assessing stress responses in these young children.

Keywords

Children SPLASHY Stress response Cortisol Alpha amylase Heart rate variability 

Notes

Acknowledgements

We would like to thank all children, families and child care centers that contributed data to SPLASHY. We also thank all students and the research team for their valuable contribution.

Authors’ contributions

The overall study was designed and performed by SK, OJ, JP and SM. SM designed the overall aim and JP the lab values/timing of the substudy. All authors conducted this research project and contributed to the data collection. AM assisted in statistical analyses. KS drafted and NM and SM revised the first version of the manuscript. All co-authors elaborated and commented on the manuscript. All authors approved the final version of the manuscript. The last 4 authors have a shared last authorship.

Funding

The study was funded by a Sinergia grant from the SNF (Grant Number: CRSII3_147673) (http://p3.snf.ch/project-147673) and by the Jacobs Foundation.

Compliance with ethical standards

Competing interests

The authors declare that they have no competing interests.

Ethical approval

The study was approved by the ethical committee of the canton of Vaud figuring as the leading committee representing all Swiss cantons, where children and their families were involved in recruitment and study participation (No 338/13 for main ethical committee of the canton of Vaud, Switzerland).

Informed consent

Parents of the recruited children provided written informed consent.

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Authors and Affiliations

  1. 1.Department of Clinical Psychology and PsychotherapyUniversity of FribourgFribourgSwitzerland
  2. 2.Department of Psychology - Clinical Child Psychology and Biological PsychologyUniversity of FribourgFribourgSwitzerland
  3. 3.Endocrinology, Diabetes & Metabolism ServiceCentre Hospitalier Universitaire Vaudois (CHUV)LausanneSwitzerland
  4. 4.Child Development CenterUniversity Children’s Hospital ZurichZurichSwitzerland
  5. 5.Children’s Research CenterUniversity Children’s Hospital ZurichZurichSwitzerland
  6. 6.Epidemiology, Biostatistics and Prevention InstituteUniversity of ZurichZurichSwitzerland
  7. 7.Department for PsychologyUniversity of BaselBaselSwitzerland
  8. 8.Department of Psychology - Clinical Psychology and PsychotherapyUniversity of ZurichZurichSwitzerland
  9. 9.Division of Pediatric Endocrinology, Diabetology and ObesityCentre Hospitalier Universitaire Vaudois (CHUV), Hôtel des PatientsLausanneSwitzerland

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