Is there any evidence for this other than a YouTube video from some guy claiming it’s true?
Now I heel-toe as I'm a dancer, but running is another story
Note that until Muybridge did his first time-lapse photographs, pretty much every single painting of a horse in motion was grossly inaccurate.
Compare:
https://en.wikipedia.org/wiki/Sallie_Gardner_at_a_Gallop
to:
http://images.fineartamerica.com/images-medium-large/fox-hun...
That’s ridiculously interesting, but is it really comparable to a walking speed human? Sounds more like an issue with the human eye than older paintings in general