Abstract
Objectives
Individuals with autism spectrum disorder (ASD) report experiencing stress, which increases with age. Few studies have included the biological stress response for measuring stress. While aerobic exercise can lower stress and repetitive behaviors, motivating adults with disabilities to exercise can be challenging. This study examined whether virtual reality (VR) exercise would improve behavior and stress physiology.
Methods
Seven males with ASD participated. This study employed a single subject withdrawal design, using a baseline phase, followed by alternating intervention (i.e., VR biking) and withdrawal (i.e., no exercise) conditions. Frequency and/or duration of repetitive behaviors were assessed. Pre-post intervention hair cortisol and salivary cortisol for each phase were collected.
Results
Overall, repetitive behaviors were lower in the final phase (M = 24.28, SD = 2.42) compared to baseline (M = 36.68, SD = 5.33). There was no significant difference in basal T1 cortisol levels across phases (χ2(6) = 2.571, p < .276); however, four participants showed cortisol levels that decreased markedly following the first intervention and remained low for the duration of the study. There was a significant difference in the cortisol levels of participants by pre and post intervention status (first intervention phase, B) as measured by AUCg (χ2(1) = 7.00, p < .008).
Conclusions
This study demonstrates that exercise can have acute and cumulative effects on basal cortisol levels and repetitive behaviors for adults with ASD, particularly those with higher cortisol levels and rates of behaviors.
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Data Availability
Data is available upon request.
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Acknowledgements
This research was partially funded by a Morris Grant from Saint Joseph’s University, which was awarded to Cheryl George. We would like to thank Gabrielle Droste, Ashley Russell, Erin Fahey, and Mary Katherine Sheplock for their assistance in data collection and analysis. We would also like to thank the staff at the adult educational day program, as well as the participants and their families.
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Cheryl L. George: conceptualization, methodology, investigation, resources, writing—original draft, writing—review and editing, supervision, project administration, funding acquisition. Amber Valentino: formal analysis, writing—original draft, investigation. Kimberly D’Anna-Hernandez: formal analysis, resources, writing—review and editing, visualization. Elizabeth A. Becker: conceptualization, methodology, validation, formal analysis, investigation, resources, data curation, writing-original draft, writing—review and editing, visualization, supervision.
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George, C.L., Valentino, A., D’Anna-Hernandez, K. et al. Virtual Reality Biking Reduces Cortisol Levels and Repetitive Behaviors in Adults with Autism Spectrum Disorder. Adv Neurodev Disord 7, 616–628 (2023). https://doi.org/10.1007/s41252-023-00326-5
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DOI: https://doi.org/10.1007/s41252-023-00326-5