How can constraint-induced movement therapy for stroke patients be incorporated into the design of a tangible interface? The case study of the 'Biggest Hit'

Stroke causes significant damage to the brain and often results in severe weakness on one side of the body. Survivors are likely to compensate for the loss of function through an increased use of the less affected arm and the nonuse of the affected arm. In some cases, this can be overcome through constraint-induced movement therapy (CIMT) by restraining the less affected arm to require the use of the affected arm when performing tasks. We report on the research and design of an interactive radio that facilitates CIMT at home. The usability of the design was assessed by stroke therapists. Feedback indicates that the radio is successful in restraining the movement while encouraging repetitive movement of the affected arm, but does not deliver CIMT fully. We highlight the opportunity to focus on the 'part-task learning' and 'initiation' components of CIMT for the design of a tangible interface for stroke rehabilitation.