We saw in a previous article the punch in pursuit: Oi Zuki. To go further in the study of this technique of Karate, we will study in this article the behavior of the back and especially the spine during Oi Zuki.
The 3 Different uses of the spine in Oi Zuki:
This is actually the description that we have already learned in the previous article:
Indeed, as a rule, when we do Oi Zuki, the spine behaves like a trunk. That is to say that all movements of the hip reverberate as is to the shoulders because we keep a very strong back, which creates a union between the pelvis and the shoulders.
This procedure is the most common because it helps protect your back. That's how you have to learn Oi Zuki. Indeed, large forces are transmitted from the pelvis to the shoulders and the back must be able to transmit without hurting themselves. By strongly contracting the back from the beginning, it is protected from any parasitic movement and the energy of the Hara (belly) is transmitted directly to the arm without the back adding power. The belly energy will "bounce" on the back to go forward.
By joining the branches (the scapular girdle) with the roots (the pelvic girdle):
The back behaves like a very strong tree trunk
But once you master well Oi Zuki (and not before !!!), Why not free the spine of this tension and also use the power of the muscles of the trunk (abdominals, back ...) dynamically, not static, to add to our technique?
We will therefore study below two other ways to use the spine in Oizuki.
Important warning: I want to clarify that the work, described in 2 and 3, is not recommended for beginners. Indeed, it requires a relaxation of the spine but must remain relative. You must maintain a control of the amplitude and not leave your spine completely free because the forces generated by your displacement would cause movements beyond the normal amplitude of the spine that can lead to serious injuries. If you start and you still want to approach this part, especially go there gently because you could hurt your vertebrae if your movements are not well controlled and synchronized.
These movements are also discouraged for growing children who may develop scoliosis.
2 - The whip:
Our spine is maintained by many muscles that allow it more or less to bend in all directions (I summarize voluntarily ;-)).
So we will use the power and the flexibility of our spine to energize even more our technique Oi Zuki.
Imagine our back no longer like a trunk or a board that transmits exactly every movement from the hips to the shoulders, but like a spring blade.
Imagine now that we do Oi Zuki but holding the top of the spring by the middle and releasing it at the last moment. You see what I mean? The spring blade will have a whipped movement that we will use.
So you do Oi Zuki but with the trunk much more relaxed. At the time of displacement, during the first push in the ground, the lower body will have a slight time ahead on the top. Be careful, do not let the upper body back! The upper body is also driven forward in the movement but as the trunk (Abdos, back ...) is relaxed, it takes a slight delay (Caution, do not arch, it's very light!)
During the Tsuki itself, the explosive energy of the Hara will spread in the spine from the bottom up with a ripple as if one wanted to whip with the upper body. We finish at the Kime by a contraction at the level of the spine and abdominals (grand rights). The back becomes monolithic again.
At the push of the 2 legs and the rotation of the pelvis, we have just added, to our Oi Zuki, the whip motion of the spine.
3 - The twist:
Imagine now that we do Oi Zuki but by holding the spring at the shoulder that strikes and the same, we let go at the last moment. This time the spring blade will have a twisting motion that we will also use.
So you make Oi Zuki always with the trunk relatively relaxed. This time during the movement, the upper body does not fall behind the lower body, however as the rear hip passes (pivot), shoulder rotation takes a slight delay. Be careful, do not let the shoulders turn upside down. They rotate well in the same direction as the hips but with a slight delay resulting in a slight twist in the vertebrae dorsales (Attention, do not force on this twist by pulling the shoulder backwards, it is very light! !)
In the same way as for the whipped movement, during the final phase the energy of the Hara will spread from bottom to top with a spiral ripple which will gradually realign the shoulders on the hips. This "catching up" of the shoulders on the pelvis will make it possible to add the power of rotation of the trunk (Use of obliques) to our Oi Zuki.
It is also necessary to synchronize the kime with the realignment of the shoulders on the hips so that the strength of this spiral rotation adds to the thrust of the legs and the rotation of the pelvis.
That's it, we have finished our study on the work of the spine in Oi Zuki. For you to understand a little better, I had fun doing a video shirtless and I made freeze frames. We can still see the difference between the shoulders and hips when the front foot touches the ground. I resumed 2 images afterwards. There in the 3 cases, the shoulders have caught up to the hips infusing the fists with a speed more and more great. Here is the photo montage:
I go on in detail and visually the description in the video belowit will be more talk;).
Training in video:
Now that we have seen the 3 ways to use the spine in Oi Zukiwe are going to practice the actual training of these three different uses.
I have prepared you a video to train you, so the time to put your kimon, I find you on the video.
(Do not forget to warm up before, thanks to the advice I give you in the ABCs of warming up , my book to download for free ;-))
I still remember that these exercises are not recommended for children and are not recommended for beginners. If you do not master Oi Zuki, just work with your back as a trunk, so you protect your spine.
Erratum : In the video, when I show you the whipped motion, I'm talking about backward delay on the front, I mean from the top down. In my mind, I imagined my back to my belly and that's why I'm talking about back and forth, but we must understand the bottom and the top .
Here, I hope you enjoy this study and you will see Oi Zuki differently now.
Leave me a comment below, thank you!
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