TeamTermin wrote: In your discussions, one of the variables we measured that I didn’t see mentioned was the stride frequency while going down the runway.
I think stride frequency is important ... very important ... but it's just not the focus of this thread. There's a few other threads going on that talk about that ... albeit not in relation to video metrics or Dartfish.
One of the focuses of this thread is to fill the void created by Linthorne when he ASSUMES a flat 1.00m pushoff for ALL elite vaulters. These are Phase 2 and Phase 3 issues, where we're breaking new ground.
In Phase 1, all we need to do for now is repeat what's already quite common ... to catch the speed of the vaulter near the end of his run ... say the last 5 meters ... but especially between Frame -1 and Frame 0.
Then, when we ANALYZE the vids, comparing one vaulter to another, etc, we might see that one vaulter's run speed is faster than another's. So then, we might want to dig deeper (as you suggest) to analyze stride frequency and stride length. Just search with keywords "stride frequency".
It's also interesting to know that we can analyze stride frequency with Dartfish. I would be VERY interested in hearing about the other PV metrics that you captured, and how you compared or analyzed them.
DJ has given me some vid that compares 2 elite vaulters side-by-side on Dartfish. I'll post that soon.
Thanks for your input, TeamTermin!