From the 2015 Junior Worlds training hall …
Hayato Chinen (56kg, Japan, @c.hayato) doing Standing Barbell Rollouts with some extra resistance provided by his teammate Eishiro Murakami.
Not the only time I have seen Japanese athletes perform this in training halls.
Update: Here he is doing it with 20kg on his back!
Argh my spine
Konstantin Konstantinov does this with 75 kg on his back.
but on his knees, not standing
big difference!