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Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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20.11.2012 |
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Growth hormone deficiency in boxers
About one in five older boxers and kick boxers no longer produce enough growth hormone in their brains, report endocrinologists at Erciyes University in Turkey soon in Clinical Endocrinology. The cause? Brain damage from the blows they've received.
People who practise martial arts are more likely to incur head trauma, which is why the researchers wanted to know whether there is a relationship between brain damage and a too low growth hormone synthesis among older boxers and kick boxers.
The Turks got together a group of 41 people who practised or had practised martial arts, and discovered that 9 of them did indeed have too little growth hormone in their blood. They no longer reacted well to GHRH or GHRP-6 when administered, and their IGF-1 level was low. A high level of IGF-1 is often associated with a high level of growth hormone.
The Turks measured the amount of brain damage their subjects had using electrodes and sound. Healthy people's brains react after about 300 msec by emitting an electrical pulse, known as the P300. If the pulse is delayed or abnormally weak it indicates that there is brain damage.
In 2007 Canadian researchers reported that football players that had incurred concussion on the playing field had a weakened P300. [Brain Inj. 2007 Jun;21(6):631-44.]
Among the subjects with a too low growth hormone level the Turkish researchers recorded a weakened P300 more often. Which provides a little more evidence of the relationship between brain damage caused by martial arts and hormonal disturbances.
American animal studies have shown that fish oil supplements help protect the brains of experimental animals against blows to the head. You can read more about this here.
The people who performed these studies believe that they can extrapolate their results to humans. If they are correct, then those who practise martial arts may be able to protect their growth hormone production by taking fish oil supplements.
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