In this paper by Dr. Julian Rudisch from the Department of Neuromotor behaviour and exercise and colleagues from Paderborn, Bad Sassendorf, Frankfurt am Main, Hamburg, Stuttgart and Berlin, five clinical gait analysis systems used in practice were analysed for comparability of data.
Highlights of the paper:

• Overground measurement devices show higher agreement than wearable devices.
• Basic spatiotemporal parameters show higher agreement than relative phase parameters
• Wearable devices agree particularly poorly for relative phase parameters
• Correct detection of heel-strike and toe-off is crucial for reliable gait analysis.

The full paper can be found here. If you have any questions, feel free to contact Dr. Rudisch