Things are quiet round here, so I decided to visit this topic. I know it has been touched on before, but I wanted to bring it up again in a more specific manner. In the past most Aikido/MMA conversations have come up in "Would Aikido work in real life" type threads.
Please note this is a technical thread concerning using the movements/principles of Aikido in an MMA setting. The philisophical aspect of whether Aikido should be used in such a setting is another topic. So if you want to bring it up feel free to do so. Just not here thank you very much!
Upon completing my second BJJ class recently, I noticed that from the mount position (me being on top) I had to pin my opponents arms by pushing my arms in to his armpit. While doing this, I found that using the technique for the so called "Unbendable Arm" in Aikido worked nicely. My opponent was unable to grab me with his arms because I was pushing against his arm pits. BTW in my experience "The unbendable arm" comes about from strong body mechanics and being able to really relax.
Another useful move against fellow BJJ noobs (but no one else) were wrist locks. Though I wasn't able to get any sort of submission with them, I was able to distract with them. On one occasion I did a make shift Kote Hineri (top example on this website: http://www.ttac.0catch.com/tekubi.htm)
on a purple belt. It didn't bother him really, but he moved to grab the hand I was using for Kote Hineri and his shift in momentum allowed me to escape from a tricky position.
I am thinking that possibly Hiji Waza (elbow control techniques) could help me with controlling a guys arms.
On other move I was thinking about was a variation of Gedan-ate. It is a free style Tomiki version I saw before. You basically meet an opponent by dipping side on beneath his centre of gravity as a form of takedown. Even it the takedown didn't come off, you could still end up in an decent position to attack the legs of a standing opponent.
Here is a really good example of freestyle Gedan-Ate from a Tomiki Aikido Competition (it occurs are around 00:25 of the clip):http://www.youtube.com/watch?v=MTt8YwPaPCY
Now I am not saying that BJJ = MMA, but it is a widely used part of MMA usually.
Any thoughts/ideas of your own re Aikido movements being used in MMA?