QUOTE(liorrh @ Sep 15 2007, 03:14 AM) [snapback]423101[/snapback]
any proof? I cite Dr. Daniel Amen's book "making a good brain great".
he has a whole chapter on blows to the head.
Blows to the head = brain trauma, obviously.
That being said, the difference between a KO and a regular blow IS ALSO brain trauma--an excessive amount. The brain bounces off the back and front of the skull with enough force to shut down certain parts of the CNS temp (this is the most widely-held explanation).
As a result a subdural hematoma forms, which is what is actually believed to cause the damage. A buildup of these over the years is what causes the conditon known as being 'punch drunk'
Since KOs and blows that 'rock' a fighter are the most traumatic by def. it stands to reason that they cause most of the injury. A KO, for example is a minor concussion, which is obviously going to cause a small subdural hematoma to form etc. Any sparring done should never, ever involve a KO or even a rocking blow. There is no reason for this.
Now, the average onset of 'punch-drunk' symptoms is 16
years into a boxing
career (http://www.about-dementia.com/articles/about-dementia/dementia-causes/dementia-brain-trauma.php)
In fact, the incidence of brain damage is amateur and professional boxers has been shown to be low:
(http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=17503873&ordinalpos=9&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum)
(http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&TermToSearch=8000819&ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVAbstractPlus
In fact all of the studies I have seen that show that boxing causes brain damage are done of professional boxers. The volume and intensity of head strikes from just training a few days a week to boxing professionally is fucking enormous.
Is it good for the brain to just train boxing? Probably not. Is it something to be worried about? Nothing I have seen indicates this. You might as well stop head-banging as not box a few days a week.