Constraint-induced movement therapy (CIMT),12 which includes intensive training with various exercises and can be used with chronic patients with stroke, involves intensive training of the impaired upper extremity and restricting movements of the unaffected limb for 6 hours per day, 5 days a week, for 2 weeks.12,13 The principles of this method are derived from theories in behavioural psychology, motor learning, and skills acquisition.9 CIMT increases motor skill and use of the affected arm and hand in daily activities after stroke, and the increased daily use persists for at least 2 years.12–15 However, the studies referred to here were performed in a laboratory setting and did not investigate the effect of CIMT on spasticity.