Stepping Up" Activity Poststroke: Ankle-Positioned Accelerometer Can Accurately Record Steps During Slow Walking (original) (raw)

Physical therapy, 2015

Abstract

As physical activity in individuals post-stroke is low, devices that monitor and provide feedback of walking activity provide motivation to engage in exercise and may assist rehabilitation professionals in auditing walking activity. However, most feedback devices are not accurate at slow walking speeds. This study assessed the accuracy of one accelerometer, the Fitbit One, to measure walking steps of community-dwelling individuals post-stroke. Cross-sectional study METHODS: Two accelerometers were positioned on the non-paretic waist and ankle of participants (n=43) and walking steps from these devices were recorded from seven speeds (0.3-0.9m/s) and compared to video recordings (gold standard). When positioned at the waist, the accelerometer had more than 10% error at all speeds, except 0.8 and 0.9m/s, and numerous participants recorded zero steps at 0.3-0.5m/s. The device had 10% or less error when positioned at the ankle for all speeds between 0.4-0.9m/s. Some participants were un...

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