The Ceriter Stride One (CSO) is a "smart sole" with pressure sensors. The sole allows data on the displacement of the body's centre of gravity (COG), as well as spatiotemporal parameters, to be obtained via pressure recordings. Logarithms, released on the data captured by the sole, make it possible to recognise propulsion (forward movement of the CG), accompanied by a reduction in step length (festination) or feet remaining standing (freezing of gait). When the system registers incipient propulsion, an audio signal ("stop") is generated via an audio device and app on the mobile phone. The CSO aims to make the pwP stop before balance disturbance can occur, preventing further propulsion and falls. The aim of the study is to explore the short-term effects of the CSO in terms of reducing (preventing) freezing of gait and fall risk in a pilot group of pwP whose functionality is limited (Hoehn and Yahr 4). Short-term impact on gait (episodes of freezing of gait, mean step length, mean gait speed) will be evaluated and user satisfaction surveyed.
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The number of captured episodes with freezing of gait (FOG)
Timeframe: 2 times 3 minutes
The number of captured steps
Timeframe: 2 times 3 minutes
The difference between the pressure of steps with left versus right foot; as a measure of gait asymmetry.
Timeframe: 2 times 3 minutes
mean step length
Timeframe: 2 times 3 minutes