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Vestibular Stimulation for ADHD: randomized controlled trial of Comprehensive Motion Apparatus
David L Clark1, L Eugene Arnold, Lindsay Crowl
1Ohio State University, Ohio, USA.
Objective:
This research evaluates effects of vestibular stimulation by Comprehensive Motion Apparatus (CMA) in ADHD.
Method:
Children ages 6 to 12 (48 boys, 5 girls) with ADHD were randomized to thrice-weekly 30-min treatments for 12 weeks with CMA, stimulating otoliths and semicircular canals, or a single-blind control of equal duration and intensity, each treatment followed by a 20-min typing tutorial.
Results:
In intent-to-treat analysis (n = 50), primary outcome improved significantly in both groups (p = .0001, d = 1.09 to 1.30), but treatment difference not significant (p = .7). Control children regressed by follow-up (difference p = .034, d = 0.65), but overall difference was not significant (p = .13, d = .47). No measure showed significant treatment differences at treatment end, but one did at follow-up. Children with IQ-achievement discrepancy > or = 1 SD showed significantly more CMA advantage on three measures.
Conclusion:
This study illustrates the importance of a credible control condition of equal duration and intensity in trials of novel treatments. CMA treatment cannot be recommended for combined-type ADHD without learning disorder.
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