This study was based on the EEG findings and Bender-Gestalt test of 86 cases of professional and amateur boxers and 52 cases of controls.
The study was performed from January to August in 1981 and the age of both groups were 17 to 26 years.
The results were as follows.
1. The incidence of abnormal EEG of the controls was 5.8,%, whereas the boxers was 44.7%. The EEG profiles of both groups are significantly different(p<0.001).
2. As to the wave patterns of abnormal EEG of the boxers, paroxysmal slow waves were most frequently found.
3. As to the incidence of abnormal EEG according to total number of fights, 30.656were found under 30 bouts, 55.6% under 60 bouts and 65.2,´0 over 60 bouts.
There was a significant statistical relationship of total number of fights (p <0. 01) .
4. As to the incidence of abnormal EEG according to number of KO and downs, 17.6% were found in class of no experiences, 51.0% in class of 1 to 4 and 66.7% in class over 5. There was a signif icant statistical relationship of number of KO and downs (p<0.001) .
5. As to the incidence of disturbed drawing in Bender-Gestalt test, 5.8% were found in the controls, whereas 26.7% in the boxers of normal EEG and 43.9% in the boxers of abnormal EEG.
There was a significant relationship between controls and boxers (p<0.001) .
From all of these results, it was demonstrated that the incidence of abnormal EEG in boxers were greater than controls and most of the patterns of abnormal EEG were paroxysmal slow waves.
The greater the number of fights or the experiences of KO and down, the greater the incidence of abnormal EEG are found.
So in the case of a KO or a down, an electroencephalogram must be done, and a boxer must have an electroencephalogram regularly.
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