Alternative therapies for climbing

I'm always keeping an eye out for ideas from other countries/climbers so intrigued to see the finger rehabilitation setup in the video below  at 2:50. Anyone know anything about it?


Additionally, from the same series of videos at the 1:00 minute mark. I've come across one or two other very well known climbers who swear by these devices. Gimmick?

Getting over the Fear of Falling

Tierra Boulder Battle 2014