Erm... I may be wrong but... when I read the course manual for Yoshinkan Aikido, one of our basic movements, the six kihon dozas, is called elbow power.
In Japanese it is written exactly as in the original japanese: hiriki no yosei. Now, from a video of Inoue-sensei I've watch a while back, I remember him saying that the forms of hiriki was different in hvs. Daito-ryu, in that Daito-ryu actually used more
raw arm power than Aikido's version, which requires less effort to perform. Each has it's own advantage and disadvantages, so one isn't really better than the other, but they ultimately do the same thing: build timing, coordinated movements, and centreline power (chushin ryoku).
here's the video. Hopefully you more qualified folks can find out more from this.
That's too bad, as it is never going to get you where you could go. This is what I mean by
"potentials" with aiki and how Kata based budo in general ruins it. It is so limited that you end up taking truly profound teachings and watch them get reduced to near useless, stylized movement. It's why the Japanese never did well on their own turf and only proceeded to lose ground when they started freestyle MMA fighting in Japan. They couldn't adapt. It's the same with IP/aiki. The really profound stuff only comes about by resistence. Unfortunately the arts that have it are all kata based.
Now you have supposedly "Expert" teachers running around and demonstrating inadequately developed body skills, while teaching in broken English with seminar attendees thinking this is deep stuff! At any point in time they could be stopped, and also could be shown a far...far.. better way to accomplish what they are shooting for. In this case I'd bet you anything he would never, on any day, go back to what he is doing in that video once he was taught the body skill behind elbow power. Oh well!
For my part I watch video after video and wonder whether they themselves ever got it, or whether they are just hiding it as it is startling obvious that...that
..ain't it. In some cases you see their body disconnect and fail, but in others they are
connected and move well, but their connection is not fully developed to where it could be. In either case it sure isn't helping the students is it? Thankfully, we are now helping ourselves; with better information and better teaching models.