'Concentration' or focus?

[Patrick Skerry]

http://www.judoinfo.com/images/video/media/concentration.movie

 

[bignick]

this link didn't work for me...are you sure it's right?

 

[TigerWoman]

So what is the topic? Can you elaborate the question? The link didn't work for me either but you can get on to a Judo site. TW