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#116690 - 05/29/02 02:02 PM Is choking safe?
n8080820 Offline

Registered: 05/29/02
Posts: 2
Loc: newcastle
I am a first dan in newcastle in the uk. I am also a doctor. To combine the 2 i am doing a study on how safe judo chokes are. has anyone here come accross any info or medical research surrounding this?
please help me. i am too lazy to do this properly.

#116691 - 06/06/02 06:31 PM Re: Is choking safe?
gus Offline

Registered: 06/06/02
Posts: 67
Loc: dixon calif.usa
in and old back issue of "black belt mag."dr.kowaii don't think i spelled the name right.choking or shime waza was explored by the kodokan.i gathered for the length of time applied to the point of pass sweat.just holding the choke beyond that point could produce damage.i've been choked out many times.but then i have a fast tapout.

#116692 - 09/13/02 07:17 PM Re: Is choking safe?
CWP Offline

Registered: 09/13/02
Posts: 16
Loc: middleburg, florida
I do cardiovascular ultrasound. I haven't seen any official literature on the matter, but I have done a little experimentation on my own. Most people think the mechanism of the choke is due to compression of the carotid arteries limiting bloodflow to the brain; but I've found that the carotids don't compress even with painful pressure. The jugular veins, however, flatten easily. Add this knowledge to the appearance of someone being choked-bright red face. So chokes apparently work by limiting outflow, not inflow-thereby letting the victim "down" gently.
The only danger I can think of would be if the one being choked had plaque or calcification inside of the carotid arteries that could be dislodged (stroke time!), or trauma to the vessles or cervical spine from an overly-vigorus technique.

#116693 - 06/15/03 08:05 AM Re: Is choking safe?
kempo_jujitsu Offline

Registered: 06/15/03
Posts: 1914
Loc: illinois, usa
i dont think there is anything "safe" about choking someone no matter which way you slice it, you are depriving them of oxygen. but i think as long as you let go when they tap out its all good [IMG][/IMG] as with any martial arts or martial sports...youre sort of playing with fire, to me...these techniques were never really meant to be safe and there isnt much a person can do to make a choke safe other than let go when uke taps out and not purposely crushing uke's throat. chokes are dangerous by definition. HOW DANGEROUS it is in a given situation however is a competition your opponent is not trying to kill you so if you get choked its not a big deal, and as long as you release the choke when uke taps out when you are applying the choke there are no worries.

#116694 - 06/15/03 08:09 AM Re: Is choking safe?
kempo_jujitsu Offline

Registered: 06/15/03
Posts: 1914
Loc: illinois, usa
and i think if you have a good choke applied....nothing will go in..or out. but i dont do judo, i do jujutsu...maybe things are different.

#116695 - 06/21/03 01:27 PM Re: Is choking safe?
Ed Glasheen Offline

Registered: 06/21/03
Posts: 1379
Loc: Newburgh,NY,USA
What kind of doctor are you? What specific choke are you refering to? Some are safe, some are very dangerous. Usually chokes that involve the carotid artery are safe. They produce hypoxia,causing the person to loose conscisness. If you apply the choke too long especially with a weapon such as a garrote, the spinal system starts to shut down. The brain starts to die. With trachea type chokes you run the risk of crushing the trachea. Especially dangerous when using clubs as a method of choking. There are as you know different degrees of unconsciness. In the deepest the uke will lose bladder control. Anyone who teaches choking as part of thier system should also know CPR just in case. They are always those variables where someone has a pre-condition that you do not know about. Ed

#116696 - 06/25/03 01:23 PM Re: Is choking safe?
Cato Offline

Registered: 10/13/02
Posts: 1636
Wha.. Did I inadvertantly tune into an episode of ER? [IMG][/IMG] You lost me, Ed.

From a laymans' point of view, plain ole common sense tells me that depriving someone of oxygen, in any way, can not be a "safe" thing to do. But then a few years at med. school might well persuade me otherwise...can't really see how though.


#116697 - 06/25/03 11:44 PM Re: Is choking safe?
Ed Glasheen Offline

Registered: 06/21/03
Posts: 1379
Loc: Newburgh,NY,USA
In my opinion to be good at martial arts you have to know alot more than kata. Knowing how a human being works both physical and physological are invaluable. Hypoxia is lack of oxygen to the brain. The brain does not have permament damage as long as the choke hold is not applied too long. How long,well the brain starts to die after aprox 4 min without oxygen. It takes about 4-10 seconds to chock someone out. So there is a safety factor there.
When you knock someone out with a punch that is neurogenic shock. The brain is over loaded with pain stimuli and shuts down. That is more dagerous because of the way the brain bounces off the interior skull. Edema or brain swelling is the cause of most fatalities in boxing. OK, well I have to get back to the ER. Ed

#116698 - 09/14/03 05:52 PM Re: Is choking safe?

It depends on which choke you use of course.

#116699 - 09/15/03 12:29 AM Re: Is choking safe?
kiwi Offline

Registered: 07/26/03
Posts: 789
Loc: Wellington New Zealand
The main problem i find with chokes is that sometimes when you are free fighting (going as hard as you can trying to submit your opponent), in order for you to be able to get a choke you have to put it on super fast. Hence the choke almost has a striking effect on the wind pipe. This feels extremely uncomfortable, and i'm sure if it was done hard enough could collpase the wind pipe.

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