Med Biol Eng Comput - Bilateral assessment of functional tasks for robot-assisted therapy applications.

Tópicos

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Resumo

This article presents a novel evaluation system along with methods to evaluate bilateral coordination of arm function on activities of daily living tasks before and after robot-assisted therapy. An affordable bilateral assessment system (BiAS) consisting of two mini-passive measuring units modeled as three degree of freedom robots is described. The process for evaluating functional tasks using the BiAS is presented and we demonstrate its ability to measure wrist kinematic trajectories. Three metrics, phase difference, movement overlap, and task completion time, are used to evaluate the BiAS system on a bilateral symmetric (bi-drink) and a bilateral asymmetric (bi-pour) functional task. Wrist position and velocity trajectories are evaluated using these metrics to provide insight into temporal and spatial bilateral deficits after stroke. The BiAS system quantified movements of the wrists during functional tasks and detected differences in impaired and unimpaired arm movements. Case studies showed that stroke patients compared to healthy subjects move slower and are less likely to use their arm simultaneously even when the functional task requires simultaneous movement. After robot-assisted therapy, interlimb coordination spatial deficits moved toward normal coordination on functional tasks.

Resumo Limpo

articl present novel evalu system along method evalu bilater coordin arm function activ daili live task robotassist therapi afford bilater assess system bias consist two minipass measur unit model three degre freedom robot describ process evalu function task use bias present demonstr abil measur wrist kinemat trajectori three metric phase differ movement overlap task complet time use evalu bias system bilater symmetr bidrink bilater asymmetr bipour function task wrist posit veloc trajectori evalu use metric provid insight tempor spatial bilater deficit stroke bias system quantifi movement wrist function task detect differ impair unimpair arm movement case studi show stroke patient compar healthi subject move slower less like use arm simultan even function task requir simultan movement robotassist therapi interlimb coordin spatial deficit move toward normal coordin function task

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