OBJECTIVE: This study is aimed at testing the immediate and retained treatment efficacies of digital mirror therapy (DMT) and digital action observation therapy (DAOT) on clinical outcomes in chronic stroke patients, in comparison with dose-matched, active control rehabilitation (CR). METHODS: Nineteen patients were randomly assigned to the DMT, DAOT, or CR for 3 weeks. Outcome measures, including the Fugl-Meyer Assessment of the Upper Extremity (FMA-UE), Chedoke Arm and Hand Activity Inventory (CAHAI), Revised Nottingham Sensory Assessment, Motor Activity Log (MAL), and visual analogue scale of the EQ-5D-5L, were conducted at preintervention (T0), postintervention (T1), and 1-month follow-up (T2). RESULTS: There were no significant differences among the three groups on the outcomes at different time points. However, in the DMT group, scores were significantly higher on the FMA-UE and the CAHAI at T2 than at T0; in the DAOT group, those on the FMA-UE and the quality of movement subscale of the MAL were significantly higher at T2 than at T0. In the CR group, scores on the FMA-UE and the CAHAI were significantly higher at T1 than at T0. CONCLUSIONS: Both DMT and DAOT had retained treatment effects on motor function. DMT and DAOT might be feasible as alternative intervention strategies for chronic stroke patients. TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT04441190

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