Ogawa Ryu Science behind the scenes II - parte1


Uploaded by masugiyama on 17.08.2012

Transcript:
Historically it is accepted that Kote Mawashi
Comes from forms in which the Tori carries a Katana
And the Uke tried to grab his wrist to prevent him to draw the Katana
Or grab the Tsuka to pull his sword
But we must considerate some influence from Jujutsu
Since it’s considered older than Aikijujutsu
And there were already similar forms to Kote Mawashi in Jujutsu
Understanding this idea of the dislocation under a medical perspective
Gives us a tool to understand one thing the old masters used to say
That when Kote Mawashi is done all the way through
This bone tends to rupture through the other tissues in that direction
Although we say so much about the origins of Aikijujutsu in Kenjutsu
it’s not always understood completely, that’s why it is important to always study.
In Kote Mawashi, for example
in the forms in which the pressure is applied here
we may realize and understand the similarity between the form the pressure is applied through the hands
with the forms in kenjutsu that roll in and out like this to cut
And so whe can realize that Kote Mawashi exists in different techniques
and different subjects in which it can be work as a support
technical complement, a technical supplement, amongst others.
Then, as we’re going to discuss about Kote Mawashi
lets understand a bit of the meaning of the words
Ko stands for small
Te stands for hand
and Mawashi comes from Mawaru
which means to revolve or to turn.
Therefore it would mean to revolve or to turn the wrist.
So, Chi Tomeru:
Chi stands for blood and tomeru comes from the verb in Japanese that means to stop or to interrupt.
Chi Tomeru would be to stop or interrupt the blood or the blood flow.
In practice we notice that the forms with Chi Tomeru prevent the Uke from using force in the area affected.
We observe that in Kote Mawashi.
It could be explained concerning only the interruption of the blood flow.
But when we think of biology and biochemistry, it seems hard that only that explains it all.
Therefore it’s an important part of the application of Chi Tomeru and an important point to understand.
First let’s try to understand the interruption of the blood flow in Kote Mawashi.
In Kote Mawashi we have a forced flexion of the wrist
that makes the wrist structures and the soft tissue from the hand overlap the structures of the wrist and distal forearm
On this region (we have a sketch) there are the radial artery (closer to the thumb) and ulnar artery
In most people they are both responsible for the hand vascularization.
There are anatomical variations, in which only the radial artery or only the ulnar artery reach the hand.
When this flexion is executed pressing, both those arteries are compressed, they’re bended and compressed by those structures.
So the blood flow to the hole hand is impaired.
Well, thinking about the human body
we realize that in a rough way of saying it is a big thermal machine.
What does it mean?
The human body is a great user (consumer) and producer of energy.
Through respiration the human body can oxidate food
thus producing heat and also consuming the heat that has the property of maintaining the body temperature mainly and enabling life.
Physics has some interesting concepts of energy so we may talk about magnetic energy, sonic energy and of course thermal energy.
So as we were treating about thermal energy, the cell reactions, the reactions of consuming the energy from food produce mainly heat.
What’s heat?
Talking about thermodynamics, the first law of thermodynamics states that
the internal energy is equal to the variation of heat plus the variation of work in a given system.
Heat concerns a gradient of temperature, the variation of temperature in a body.
What does it mean?
It means movement.
Heat is one kind of energy in movement,
It has been defined that heat travels from a hotter body to a colder one.
So, in a typical day we constantly lose heat, therefore to keep our bodies warm we must produce heat.
Many think that temperature is a kind of energy, but temperature is an unit.
but it is a physical property and can be measured with the use of thermometers for example.
Inside our cells it is important to notice that what maintains energy is movement.
The movement of atoms, electrons…
the cells are in constant movement.
For example, an oxygen molecule, present in the air, is in constant movement.
And that molecule has its characteristic energy
its characteristic frequency and each one of us has our own frequency, both cerebral and cellular.
Therefore, if we change the temperature, if we increase the temperature
we change the frequency of the molecules.
How can that be seen in our body concerning Chi Tomeru?
Blood works in the human body as a great energy conductor, transporter
by the blood vessels, it brings energy to the limbs, to the organs, to the hands and the feet…
We’re in a position in which there is no blood flow
the transportation of energy tends to be interrupted
and it lowers the local temperature.
To exemplify and feel the interruption in the blood flow, there is a simple experiment.
(Please, Shidoin)
In the wrist we have the radial and ulnar arteries that are responsible for the hand vascularization as was said.
But those arteries are quite superficial to the anterior face of the forearm.
So when we compress the anterior face of the forearm along the radius and the ulna, we can interrupt the blood flow to the hand.
Of course it’s not interesting to do this for a long time, but a few seconds only won’t hurt.
We can see that in a short period of time the hand gets pale and starts to feel cold.
At the moment we remove the pressure the hand gets warm again, he can feel it quite fine, and the hand is no longer pale.
It means that we had interrupted the blood flow and now it has been reestablished.
This way it is clear and easy to understand how the blood flow interruption occurs in Kote Mawashi.
As we’ve seen, blood transports nutrients and oxygen as much as heat.
And it’s done basically gaining heat in the central inner part of the body and losing it in the extremities
the whole skin and specialy the feet, hands, nose and ears as was said.
So, interruption in the blood flow stops the incoming of those nutrients and of heat to the parts that lose heat.
It would cause the muscles to lose their capability of contraction
but it takes time to happen once the human muscle is able to produce contraction in anaerobic situation
(meaning when there’s not enough oxygen transported by the blood)
and has a chemical energy storage specially in the form of glycogen.
Because of that the muscle, even in the absence of blood flow
for a short period of time, can produce vigorous and efficient contraction.