Cited by 42Sleep and related disordersAutism Spectrum Disorder ResearchSleep and Wakefulness Research

Assessing a hyperarousal hypothesis of insomnia in adults with autism spectrum disorder

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Baker, Emma K., Richdale, Amanda L., Hazi, Agnes, Prendergast, Luke A.·2019·Autism Research

Abstract

This study aimed to investigate the relationship between sleep, psychopathology (anxiety, depression and presleep arousal) symptoms, and cortisol in adults with autism spectrum disorder (ASD). The sample composed of 29 adults with ASD (51.7% males) and 29 control adults (51.7% males) aged 21–44 years. Thirteen adults with ASD were medicated for a comorbid diagnosis of anxiety and/or depression (ASD‐Med), while the remaining 16 adults with ASD were not medicated for such diagnoses (ASD‐Only). Participants completed a questionnaire battery, 14‐day sleep/wake diary and 14‐day actigraphy assessment. On one day during the data collection period, participants collected five saliva samples, hourly, prior to sleep and two morning samples; immediately upon waking and 30 min thereafter for the analysis of cortisol. Cortisol 1 hr prior to habitual sleep onset time was associated with poorer sleep efficiency in both ASD groups and increased wake after sleep onset duration (ASD‐Only). Higher subjective somatic arousal was also associated with increased sleep onset latency, regardless of group, and poorer sleep efficiency in the ASD‐Only group. ASD‐Only participants had significantly greater reductions in evening cortisol concentrations compared to both ASD‐Med and control participants. No significant group differences were found for the cortisol awakening response. Findings suggest a hyperarousal hypothesis of insomnia in adults with ASD. Moreover, the low cortisol levels observed in ASD‐Only adults suggest dysregulation of the hypothalamic–pituitary–adrenal (HPA) axis. Longitudinal studies exploring the interplay between insomnia, anxiety and HPA axis regulation across the lifespan in those with ASD are warranted. Autism Res 2019, 12: 897–910. © 2019 International Society for Autism Research, Wiley Periodicals, Inc. Lay Summary: Both objective (cortisol) and subjective (somatic) physiological arousal were associated with poor sleep quality in adults on the autism spectrum. Adults with autism spectrum disorder (ASD) who were not medicated for a comorbid diagnosis of anxiety and/or depression also had dampened cortisol secretion, suggesting a dysregulation of the hypothalamic pituitary axis. Longitudinal studies investigating the relationship between sleep, psychopathology symptoms and physiological arousal in autistic individuals are warranted. Autism Res 2019. © 2019 International Society for Autism Research, Wiley Periodicals, Inc.

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  1. [1]1. American Psychiatric Association. (2000). Diagnostic and statistical manual of mental disorders text revision (4th ed.). Washington, D.C.: American Psychiatric Association.
  2. [26]26. Fahrmeir, L., Kneib, T., Lang, S., & Marx, B. (2013). Regression: Models, Methods and Applications. Berlin, Germany: Springer-Verlag Berlin Heidelberg.
  3. [72]72. Baker, E. K., Richdale, A. L., Hazi, A. & Prendergast, L. A. (2019). Assessing a hyperarousal hypothesis of insomnia in adults with autism spectrum disorder. AUTISM RESEARCH, 12 (6), pp.897-910. https://doi.org/10.1002/aur.2094. Persistent Link: http://hdl.handle.net/11343/285632

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Authors
Baker, E. K., Richdale, A. L., Hazi, A., & Prendergast, L. A.
Affiliations
  • The University of Melbourne (AU)
  • La Trobe University (AU)
Corresponding author
Baker, Emma K.
Venue
Autism Research
Publisher
Wiley
Published
2019-03-21
Volume
12
Issue
6
Pages
897-910
ISSN
  • 1939-3792 (ISSN-L)
  • 1939-3806
OpenAlex
W2922944062
Cited by
42
References
66
Citations by year
2026: 6 · 2025: 3 · 2024: 5 · 2023: 4 · 2022: 8 · 2021: 5 · 2020: 8 · 2019: 3
FWCI
7.08
Type
journal article
Language
en
Open access
Locations
  • Autism Research (publishedVersion)
  • PubMed (publishedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
Keywords
autism spectrum disorder, insomnia, cortisol, HPA axis dysregulation, sleep efficiency, wake after sleep onset, sleep latency, somatic arousal, anxiety, depression, autistic adults, cortisol awakening response
MeSH terms
Autism Spectrum Disorder, Adult, Anxiety Disorders, Arousal, Depressive Disorder, Female, Humans, Hydrocortisone, Hypothalamo-Hypophyseal System, Sleep Initiation and Maintenance Disorders, Longitudinal Studies, Male, Pituitary-Adrenal System, Surveys and Questionnaires, Saliva, Comorbidity, Young Adult

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