Regard to gait speed in advance analysis

[Wisavaporn Niamsang]

I would like to ask if OpenCap is possible to display walking gait speed on advance gait analysis because on the previous time I could see the results of gait speed, but now I can't see them. I'm not sure, I'm do something wrong or not.

Thank you very much, I really appreciate your hard work.

[Antoine Falisse]

You should see the gait speed on the overground analysis but not on the treadmill analysis (we assume you know the speed of the treadmill there and do not want to add confusion but displaying a potentially slightly different speed), best, antoine

[Wisavaporn Niamsang]

Actually, I would like to compare the gait speed that I recorded from treadmill and OpenCap. As you know, I know the actual speed from treadmill already but some time I would like to set the treadmill in self pace which is not fixed the speed. And from the previous time, I got the gait speed from OpenCap, and I saw that is pretty accurate with the real value. Therefore, I would like to bring gait speed data to report in my research project. So, if it possible to bring gait speed result in advance analysis on treadmill again.

Thank you very much

[Antoine Falisse]

Interesting use case, I will think about this. You can also run the analysis locally and get the gait speed: https://github.com/stanfordnmbl/opencap ... nalysis.py

[Wisavaporn Niamsang]

Thank you very much for helpful guidance. However, I have other question regarding the gait pattern, How can I know where is the initial contact in each gait cycle because I would like to get 100% of gait cycle since initial contact to terminal swing. That's why I would like to know the even during patient walk.

Thank you very much

[Antoine Falisse]

Hey, if you run the analysis locally you can call get _gait_events() https://github.com/stanfordnmbl/opencap ... #L134-L136

[Laura Gruss]

Hi,
I assume that the overground gait analysis shown in the analysis dashboard uses gait events like heelstrike and toe-off to calculate parameters like stride length and cadence. Is there a way for me to access and download the calculated times when these events occur so that I can combine them with the dashboard kinematics data? For example, I would like to know knee angle at each heelstrike, which I could get if I had a spreadsheet with gait events and times.

Thanks,
Laura Gruss

[Antoine Falisse]

Hi, if you run the analysis locally https://github.com/stanfordnmbl/opencap ... nalysis.py then you can use the class to access the gait events https://github.com/stanfordnmbl/opencap ... sis.py#L81. Best, Antoine