[chocoheadfred]

I've used a computrainer before to capture this data, weak spots in pedaling. Not sure how this technology works though.

Yes, Strava phone app. I don't have the fancy smancy garmins/power meters/etc. Does it show though on a Garmin when you enter a segment if you are running Strava?

[davidjohnstone]

It looks like Computrainers capture more data[1]. I'd love it if power meters on bikes also captured this data.

Nah, us Garmin users don't even have an app on our devices, we just upload our data to their website when we get home (just like it works with my site).

1. http://www.racermateinc.com/spinscan.asp