Wat zijn enkele van de grootste fouten bij het doen van Sei Oi Nage (schouderworp). Op zoek naar meer oefeningen voor mijn studenten
Wat zijn enkele van de grootste fouten bij het doen van Sei Oi Nage (schouderworp). Op zoek naar meer oefeningen voor mijn studenten
18/07/2018
5 Comments
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bokertovelijah
1. The *Seoi* part of seoi nage is the uke’s shoulder, not yours. When you put his arm over your shoulder, you’re relying brute force to hoist him over your body rather than the torque created by twisting. His armpit should be locked into your bicep.
2. Pulling him up and not down by lifting your bicep up to his armpit is also working against you. You need to pull him down to your bicep.
3. Lower belts often use their hip to perform this throw. Using your hip as a fulcrum defeats the purpose.
4. Not looking over your opposite shoulder. Never look back at uke, and try not to look forward, rather look backwards over your opposite shoulder.
Geschichtenerzaehler
Just like u/bokertovelijah wrote: Uke’s arm does not belong onto tori’s shoulder, but onto his biceps.
More common mistakes entail:
– Lifting from the knees. There is no lifting in Judo. Who thinks there is lifting like weight lifters do in Judo, has fundamentally misunderstood how techniques are supposed to work.
– Wrong entry: Stepping too close and turning into uke and thus blocking one’s own movement
– Wrong entry 2: Turning in such a way one can easily be pulled backwards by uke, i.e. a 180° turn without any further preparation
– Strenous, telegraphing pull: Trying to pull uke’s arm up with a lot of force with the intention to unbalance him to the front will naturally trigger resistance and have the opposite effect
Here some **bad examples** from my collection:
https://www.youtube.com/watch?v=4m8Qf3X-eW4 (lifting from the knees, unrealistic situation, overall sloppyness)
https://www.youtube.com/watch?v=q5GhyPF6BIE (unrealistic Kuzushi, come on, which uke allows himself to be put on his toes like that?)
https://www.youtube.com/watch?v=yZBKCL5JSOI (lifting from the legs, also attacking against the leading foot side is hard)
https://www.youtube.com/watch?v=ZWkqmG4QY4Q (uke would just need to take a step back and tori would fall towards him)
https://www.youtube.com/watch?v=iLV8x4pYuO4 (questionable arm lifting action, stepping too close, lifting from the knees)
https://www.youtube.com/watch?v=5Csbw6tJztc (stepping too close again)
Now some **good examples**:
Tokio Hirano shows various methods to apply ISN here, each of them would be worthy of an elaborate break down, but take away one key element here: At a first glance it looks as if he was lifting from the knees, but in truth he drops his center of mass by lowering himself and creates sort of a gap, an empty space which uke falls into. Only after uke has fallen onto tori’s back Hirano straightens his knees to add rotation and impulse to the throw, this has nothing to do with lifting:
https://youtu.be/fc8tvWIJwpk
more ISN with Tokio Hirano:
https://youtu.be/wLlMtIMUW1E
Jean-Luc Barre shows a really nice lapel grip variation of ISN here, his elbow pushes uke’s elbow inside and provkes a an outward rising reaction. He also spins away from uke not towards him:
https://youtu.be/ziDp5JK-fFY
Jane Bridge shows another action-reaction based way to do ISN:
She pushes uke back until he provides enough resistance to be thrown forward with ease. This is physically sound, I must point out though that this is hard against more experienced opponents. Still it is something one should know and be able to utilize:
https://youtu.be/PfDpZFfKx-c
99% of what these Russians show is very good technique. In this short clip they do what’s called “T-ing up”, which means drawing out uke on his off side. As I mentioned above ISN works much better, when uke’s foot stands back on that side. T-ing up also serves another purpose: It shortens the turn by half! There’s other fantastic material by the Kodokan, Koike, Hirano and Mifune in this clip, but
for depictive purposes I’ll link directly to the Russians:
https://youtu.be/GyHA17-59yk?t=31s
It is of course possible to teach ISN in a progression. Nowadays I don’t think that is the best way anymore, but prefer practicing application forms only, but if you insist on progression, it should look like this:
https://vimeo.com/48143737 (skill development video, very interesting)
One of the greatest treasures I uncovered on Youtube regarding ISN and other stuff is this video of Nobutaka Mizuguchi. Please understand that this sensei is of old age and that his technique may not look very dynamic as a consequence of his physical limits, but the details he covers in this old school demo, are gold!
– He adresses driving back uke’s foot on the throw side and shows
methods to do that.
– Pay utmost attention to how he grabs uke’s arm and how he utilizes his hands (starts around 41:35)! He hooks under with his tsurite and draws in uke’s shoulder, but pushes away uke’s elbow! The complete opposite of the method taught nowadays. As a result uke is unable to escape towards the side. It is also much more strength efficient than pulling uke’s arm upwards. With this grip he can swing uke behind himself like a backpack if necessary.
– The grip also serves choke prevention.
– Uke’s stance in relation to tori allows tori to step in for a half turn to throw again.
– Tori pushes his hips sideways into uke and bows down, driving his shoulder towards the mat to tilt uke over. Uke lands at the side of tori. This looks a bit like tori unloads a sack of potates. Done with force this throw is way harder than it looks.
https://youtu.be/zo8nuB3snkI?t=39m30s
Kiyoshi Murakami teaches a very similar approach to ISN:
https://youtu.be/T8HJ38sDWXk
If you are looking for another application forms of ISN, you may want to look at this: Yasuhiko Moriwaki shows some interesting entry variants (24:48-28:25):
https://youtu.be/19YSXee6siw?t=24m48s
bokertovelijah
For morote i tend to get lower and catapult uke more using the spring I’ve loaded in my legs, or whip uke almost like tai otoshi. Not a drop, but my entry is much lower and faster. Also, for both i make sure not to step in to close.
ArrrGaming
You may address me from now on as, “Captain steps-too-close”. 🙁
moorg745
To point out more as to why the arm belongs on the bicep. Just think about the rotational part of the throw. Keeping the arm on your shoulder brings it much closer to your center line and minimizes and rotational acceleration you can produce in the kake. The bicep, while also being stronger and more secure, places uke’s shoulder outside of your center line, meaning that your body’s rotation will have a greater effect within the mechanics of the throw. You’ll engage not just your core, but your hips and obliques, allowing for an overall stronger kake.