Randomized Controlled Trial of Therapeutic Horseback Riding in Children and Adolescents With Autism Spectrum Disorder

• Published in: Journal of the American Academy of Child and Adolescent Psychiatry Vol. 54; no. 7; pp. 541 - 549
• Main Authors: Gabriels, Robin L., Pan, Zhaoxing, Dechant, Briar, Agnew, John A., Brim, Natalie, Mesibov, Gary
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.07.2015; Elsevier BV
• Subjects: Adolescent; Animals; Autism; autism spectrum disorder; Autism Spectrum Disorder - therapy; Autism Spectrum Disorders; Child; Child psychology; Clinical outcomes; Control Groups; Effectiveness studies; equine-assisted activities and therapies; Equine-Assisted Therapy - methods; Female; Horseback riding; Horses; human-animal interaction; Humans; Hyperactivity; Intelligence Quotient; Male; Pediatrics; Psychiatric Status Rating Scales; Psychiatry; Psychotherapy; Randomized Controlled Trials; Self control; Single-Blind Method; Social Behavior; Social Cognition; social-communication functioning; therapeutic horseback riding; Treatment Outcome; United States; social-communication functioning; autism spectrum disorder; therapeutic horseback riding; human-animal interaction; equine-assisted activities and therapies
• ISSN: 0890-8567; 1527-5418; 1527-5418
• DOI: 10.1016/j.jaac.2015.04.007

This study expands previous equine-assisted intervention research by evaluating the effectiveness of therapeutic horseback riding (THR) on self-regulation, socialization, communication, adaptive, and motor behaviors in children with autism spectrum disorder (ASD). Participants with ASD (aged 6–16 years; N = 127) were stratified by nonverbal IQ standard scores (≤85 or >85) and randomized to 1 of 2 groups for 10 weeks: THR intervention or a barn activity (BA) control group without horses that used similar methods. The fidelity of the THR intervention was monitored. Participants were evaluated within 1 month pre- and postintervention by raters blinded to intervention conditions and unblinded caregiver questionnaires. During the intervention, caregivers rated participants’ behaviors weekly. Intent-to-treat analysis conducted on the 116 participants who completed a baseline assessment (THR n = 58; BA control n = 58) revealed significant improvements in the THR group compared to the control on measures of irritability (primary outcome) (p = .02; effect size [ES] = 0.50) and hyperactivity (p = .01; ES = 0.53), beginning by week 5 of the intervention. Significant improvements in the THR group were also observed on a measure of social cognition (p = .05; ES = 0.41) and social communication (p = .003; ES = 0.63), along with the total number of words (p = .01; ES = 0.54) and new words (p = .01; ES = 0.54) spoken during a standardized language sample. Sensitivity analyses adjusting for age, IQ, and per protocol analyses produced consistent results. This is the first large-scale, randomized, controlled trial demonstrating efficacy of THR for the ASD population, and findings are consistent with previous equine-assisted intervention studies. Trial of Therapeutic Horseback Riding in Children and Adolescents With Autism Spectrum Disorder; http://clinicaltrials.gov; NCT02301195.