[Abstract] Cognitive motor interference on upper extremity motor performance in a robot-assisted planar reaching task among patients with stroke

Abstract

Objective

To explore motor performance on two different cognitive tasks during robotic rehabilitation in which motor performance was longitudinally assessed.

Design

Prospective study

Setting

Rehabilitation hospital

Participants

Patients with chronic stroke and upper extremity impairment (N=22)

Intervention

A total of 640 repetitions of robot-assisted planar reaching, five times a week for 4 weeks

Main Outcome Measures

Longitudinal robotic evaluations regarding motor performance included smoothness, mean velocity, path error, and reach error by the type of cognitive task. Dual-task effects (DTE) of motor performance were computed in order to analyze the effect of the cognitive task on dual-task interference.

Results

Cognitive task type influenced smoothness (p = 0.006), the DTE of smoothness (p = 0.002), and the DTE of reach error (p = 0.052). Robotic rehabilitation improved smoothness (p = 0.007) and reach error (p = 0.078), while stroke severity affected smoothness (p = 0.01), reach error (p < 0.001), and path error (p = 0.01). Robotic rehabilitation or severity did not affect the DTE of motor performance.

Conclusions

The present results provide evidence for the effect of cognitive-motor interference on upper extremity performance among participants with stroke using a robotic-guided rehabilitation system.

Source: Cognitive motor interference on upper extremity motor performance in a robot-assisted planar reaching task among patients with stroke – Archives of Physical Medicine and Rehabilitation

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