Sometimes things that we perceive as simple are way more complex than we think. That is the case with most of martial arts especially Judo. In this channel I try to dig deeper, decode and educate about interesting Judo topics. This channel is dedicated for those who like technique analysis, educational videos and short documentary type videos, basically for those who want to decode Judo (or other grappling martial arts).
Pulling in your arm would create more momentum (less force required), as you bring the 'gripping point' closer to your point of gravity and center of rotation. Also, the opponent would likely be more off balance. In the mean time, like stated in another comment, it would give you time too feel up the opponents grip and reaction. But perhaps most important, it would conceil your own action/intention more, so you can execute the Tai Otoshi as late as posiible, until the moment where there is no opposition possible. edit: forgot to mention, that the movement alone would also be assessed by the opponent as being something of a normal reaction, like you're protecting your weak or attacked spot by pulling in your arm.
The reason why tori needs to pull arm close to his chest is to minimize energy when he turns and makes the throw. if you dont do this imagine torii has an extended arm and tries to throw nage, too much energy is expended to make the throw making the throw less likely to happen. .
"When performed incorrectly, it can demolish your opponent's testicles". An old Japanese sensei once told me the "traditional" way to do uchimata was to hit the balls the first time, that way your opponent would let you throw him the second.
I'll be making some more analysis videos, but they will be on my main channel. Here is a breakdown I posted few weeks ago: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-liX05PjroiE.html
One major component of Uchi Mata that you mention but dont stress enough is Maruyama's flexibility. Its the same as Ono. They are incredible powerful and explosive allied to amazing hip dexterity and flexibility. Basically they can elevate the foot in a 100% vertical stance doing the splits, maintaining balance. Once you can do that, its indefensable. For me their flexibility is what sets their Uchi Mata appart
A crucial element is also how uke has his vision blocked from seeing that rear leg go back for getting that elastic to leap in. Because Maruyama can keep their head isolated and has insane mobility he uses his body like a pendulum going from his head underneath. They don't know they're thrown until it's too late.
Looks like he has a grip, but I see your point he used uke’s grip, reminds me of one of my judo Sensei telling me, don’t fight for grip throw uke with what he gives you, he was one of first Caucasian to make black belt at the KODOKAN, was an MP fitting Vietnamese war and had opportunity to learn there
Great video, still watching it years later. Can you do one about the uchimata without the tsurite, in which tori uses Ike’s strong grip on his arm to draw him towards uchimata? Nagase vs Valois-Fortier in Montreal is a great example!
Vraiment vous la faites un peu trop durer votre mayonnaise même pour ceux qui adorent le judo .... La même vous pouvez la faire deux fois moins longue ! on préfère regarder 2 fois une vidéo "pas escargot" qu'une seule vidéo limace ! ... Je me casse, j'ai tenu exactement 1mn48 !!
Awesome watched one video and instantly gauged he using their grip as a grip then with his other hand is guiding the rest of the throw. This should be included in all judo training. Maker of video explained it perfectly. Good job on the breakdown
Yoko tomange same side entry but attacking leg lifts and supports the trailing leg sweeps sideways throwing your opponent onto their side/ back variation
Absolutely amazing video. I was looking for someone to break down this no grip version. I saw videos of the throw but couldn't quite see what was happening. This was so very well done, explained and with so many examples. I can't say enough about how good this video is. It must have taken SO long to make and edit!!! Bravo
I know this is an old video, but Ono's Osoto Gari that you highlight here is a textbook copy of Koga Toshihiko's technique where he hooks the knee, extends upwards to pin the opponent in place, then takes another step to get into position for reaping. Someone recently started posting his old videos on RU-vid if you care to watch. Also, you are somewhat incorrect about the lack of arm control using the "Armpit" grip. The way the Japanese grip the armpit, they gather material from the sleeve *into* the armpit pocket and it gives you a ton of control over the arm and upper body. If done correctly even regripping inside is very difficult for the opponent. I use this grip often against stronger opponents and to negate a gripping advantage without having to switch stance when I get outgripped. Now, getting material gathered into the armpit is quite difficult once your opponent expects it, so you are correct that if you fail to collect sleeve material you lose arm control relative to a standard Tsurite grip. Great video!
