Step analysis is a feature of the 1080 web app where the linear run is broken down into individual steps which can be then be analyzed to get further insights into the movement of the runner. It can provide information such as average step length, stride length, step frequency or force discrepancies between the two sides.
The function can be accessed from the run list by clicking the L/R analysis button:
Guidelines for use
- The algorithm was developed for standard horizontal sprinting.
- Use a medium to high load for best results since this will reduce the line sway.
- A higher load will improve the accuracy of the force differences calculation
How it works
The tool first applies a low pass filter on the stored measurements to filter out noise such as line sway and motor oscillations. This improves the accuracy of the tool but it does make the graphs look different than what is shown when looking at the raw sample data in other places of the application or from CSV exports.
The algorithm is not perfect and will sometimes fail to correctly identify all steps. Always sanity check the results.
This tool assumes for each movement that the bottom (valley) of each connected curve is foot contact and greatest peak (mountain top) is toe off. Movement for each step terminates at the bottom of each valley. This is considered a movement length or step.