Validity and reliability of a commercial wearable sensor system for measuring spatiotemporal gait parameters in a post-stroke population: the effects of walking speed and asymmetry.

This study supports the use of Opal wearable sensors to obtain quantitative measures of post-stroke gait impairment, while recommending cautious interpretation of these measures for individuals with moderate-severe asymmetry or walking speeds slower than 0.80 m/s.