Mirror Therapy Preceding Augmented Reality in Stroke Rehabilitation

The mirror therapy (MT) will be done with participants seated at a table. The affected upper-extremity (UE) will be placed behind the mirror and the unaffected UE in front of the mirror. Participants will be asked to do the same movements using both the unaffected and affected UE as possible. Each participant will practice two different MT protocols: unilateral mirror therapy (UMT) and bilateral mirror therapy (BMT). During UMT, the affected hand is static, while during BMT, the affected hand moves in an attempt to duplicate the unaffected hand as best as possible. The MT activities include gross motor movements, fine motor movements, and object manipulation.

The training program provides goal-directed exercises designed to be adjustable in order to match the patient's ability to minimize compensatory movements. To ensure safety, the investigators will place a handrail in front of the participant for support. The goal-directed exercise includes balance training (i.e., weight shifting, standing on one leg), activities of daily living training (i.e., reaching), and cognitive enhancement (i.e., memory training). By using the AR system, participants can observe the real performance of motions and interaction between the body and the virtual environment.

The control intervention will include practice of upper limb activities, balance activities, activities of daily living, and cognitive enhancement tasks. The protocols of the conventional therapy will be formulated by using occupational therapy techniques, such as neurodevelopmental techniques and functional task training. The therapy will be adapted to the participants' levels of motor deficits and their prioritized goals. The protocol will include affected arm exercise or gross motor training, muscle strengthening of the affected arm, fine motor or dexterity training, and functional tasks of daily life or compensatory techniques to alleviate functional deficits. The therapist will work with the participant to select functionally relevant tasks, such as picking up items from a box, lifting soft drink bottles, hanging clothes, and so on.