Here is a video of Lu Xiaojun doing some Barbell Side Bends in the 2011 World Weightlifting Championships training hall.
Depending on how heavy you go these can be a great core strength exercise as well as a nice warm-up / mobility drill.
Other name suggestions so far: Oblique Curls a.k.a. Hungarian ankle-Quixote a.k.a. The Stir-Fry 🙂
Check out more Lu Xiaojun training hall videos.
Update: Here is Mohamed Ehab doing them too.
Post by Mohamed Ehab.
memet says
November 9, 2014 at 08:34both performing different. look at their feet. Lou’s are closed and looks like its warm up for the knee joints too.
dflan says
November 19, 2014 at 08:59the knees were stiff. they wouldn’t be affected by that movement. the only difference is the stance – most likely b/c mohamed was going heavier.