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Post by fujicolt on Sept 2, 2010 23:03:47 GMT
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Post by genkaimade on Sept 3, 2010 7:37:04 GMT
All strikes to the head right?
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Post by liamwatt on Sept 3, 2010 12:29:03 GMT
This has been fustrating me, was thinking it was either hits to the temple or something, but then saw knockouts by striking the jaw so I think you will have to spill the beans steve to put me out of my misery .
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Post by jimlukelkc on Sept 3, 2010 13:27:21 GMT
there is a "sweet point" on the side of the jaw which gives the maximum amount of leverage against the jaw to cause the whiplash effect necessary to cause the shearing forces required to make the brain move inside the skull Phew! Anyhow this is what causes the knock-out not the striking of the jaw per se. this is dangerous in as much as it causes an instant switch off and further cranial damage can ensue as the victims head hits the floor. However striking the temple is a different matter as the skull is structurally weak here and referal shock to the frontal lobe can ensue. Not all knockouts involve striking the head however, I have personally witnessed strikes to the thigh and armpit have the same effect and have knocked out someone myself by a relatively light blow to an acupressure point on the side of the neck, although I have never taught this and will not demonstrate it due to its lethal implications.
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Post by liamwatt on Sept 3, 2010 14:26:18 GMT
Would that be the carotid artery in the neck Jim, not sure as it delivers the brain oxygen and blood, so if that is cut off even for a second its lights out I would think, heard about it a few times could be wrong though.
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Post by shinzan on Sept 3, 2010 17:01:46 GMT
I'm probably way off the mark but I would say that most of the guys who are knocked out in this clip never actually seen the knockout blow coming
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Post by Dod Watt on Sept 3, 2010 18:00:11 GMT
I would agree with Jim here, because of the head being exposed a sudden strike to it causing a sharp movement of the head would make the brain move about inside the skull, therefore unconsciousness could happen.
If you look closely the punches were making contact with the head at different points, for example the chin, temple even the top of the head, in one of the clips the punch even just glance the side, but there was enough force in it to make the head recoil or as Jim said whiplash.
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Post by jimlukelkc on Sept 4, 2010 13:49:19 GMT
It is a point very close to the carotid sinus, due to this being prone to bleeding I never, ever advocate its use. However there are several mechanisms in the neck which can cause anything from fainting to death. there are baroreceptors in the large veins and arteries in the neck sensitive to drops or increases in pressure, they respond by fooling the brain into fainting in order to bring the pressure back to normal. Then there is vagal cardiac inhibition which is the other end of the scale in when stimulation of the vagus nerve causes autonomic reflexes to shut down ( breathing and heart). It is so easy to misjudge this that I personally feel it irresponsible to demonstrate this either in class or on the internet.
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Post by fujicolt on Sept 6, 2010 23:39:52 GMT
David gets the prize (two stale scons and moldy jam!) watch carefully the vast majority of knockout come from impact that the receiver has not spotted coming in and had no time to brace against in any way! Remember how Houdini Died?
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Post by shinzan on Sept 7, 2010 7:00:19 GMT
;D ;D so the moral of the story is? ?
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Post by fujicolt on Sept 8, 2010 12:22:30 GMT
timing is a crucial element of successful KO
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