Relaxation training with and without Comprehensive Behavioral Intervention for Tics for Tourette's disorder: A multiple baseline across participants consecutive case series.
2022
Abstract Background and objectives Behavioral therapies such as the Comprehensive Behavioral Intervention for Tics (CBIT) are recommended as the first-line treatment for Tourette's Disorder. This treatment approach is comprised of three central components: habit reversal training, functional assessment/intervention, and relaxation training. Despite its combined efficacy, the contribution of each therapeutic component in CBIT for reducing tic severity remains undetermined. The study evaluated the efficacy of relaxation training alone or alongside other CBIT components for reducing tic severity. Methods In this multiple-baseline study, participants completed a baseline assessment (A), 4 weekly sessions of relaxation training followed by a posttreatment assessment (B), 8 weekly sessions of CBIT followed by a posttreatment assessment (C), and a 1 month posttreatment follow up assessment (D). Six participants (83% male) aged 10–18 with Tourette's Disorder completed study procedures. Primary outcomes of tic severity was the Yale Global Tic Severity Scale (YGTSS). Results A repeated measures ANOVA revealed a significance reduction in tic severity over time (p = .010). While post-hoc tests revealed a moderate non-significant reduction in tic severity after relaxation training (d =.23), large significant reductions in tic severity were observed after the combined treatment of relaxation training and CBIT (d = 1.17) that were maintained at a 1-month follow-up visit (d = 1.53). Limitations Findings are limited by the small sample size. Conclusions While relaxation training is effective when included in conjunction with CBIT, relaxation training alone is not effective in reducing tic severity in patients with Tourette's Disorder.
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