| Purpose:To explore the effect of different sports intensity on college students' mismatched negative,which is the automatic processing ability of information in the brain.Methods:Subjects to adopt the method of pseudo random selection of Capital Universityof Physical Education and Sports college students40 people(men:25,women:15,mean age,21.63±2.07years),the subjects were right-handed and without neurological disease,The experiment was divided into four experiments: no exercise intervention,low intensity,moderate intensity and high intensity power cycling,every 20 minutes.After each exercise,the brain waves were collected and modified oddball paradigm test,and then compared with their own contrast analysis of ANOVA,The subjects recorded their heart rate and RPE values before,during and after exercise to determine their motion status.Results:1.Compared with the non-exercise intervention,the movement resulted in the improvement of the accuracy(F(1,159)=4.252,P=0.006)and the shortening of the reaction time(F(1,159)=5.353,P=0.002).Compared with the non-exercise intervention,after lower intensity exercise,the accuracy decreased(P=0.675)and the response time was extended(P= 0.146),but there was no significant difference;after moderate intensity exercise,the accuracy was improved(P=0.016)and the response time was shortened(P= 0.014),with significant difference;after higher intensity exercise,the accuracy was improved(P=0.033),with significant difference,the response time was extended(P=0.868),but there was no significant difference;.compared with the low intensity exercise,after the moderate intensity exercise,the accuracy was improved(P=0.005)and the reaction time was shortened(P=0.000)with significant difference;after higher intensity exercise,the accuracy was improved(P=0.011),with significant difference,the response time was shortened(P=0.105),but there was no significant difference;compared with the moderate intensity exercise,after higher intensity exercise,the accuracy was reduced,but there was no significant difference(P=0.787),and the response time was prolonged,with significant difference(P=0.021).2.There was a significant difference between the amplitude of MMN(F(1,38)=11.972,P=0.000),and no significant difference in the latency(F(1,38)=0.947,P=0.427).Compared with non-exercise intervention,the amplitude of low and moderate intensity exercise was increased(P=0.03,P=0.022),the amplitude of high intensity exercise was decreased(P = 0.047),with significant difference;compared with the of the low-intensity movement,the amplitude of the high-intensity movement decreased(P=0.000),with significant difference;and the amplitude of moderate intensity movement was decreased(P=0.427),no significant difference;compared with the amplitude ofmoderate intensity motion,the amplitude of the higher intensity movement was decreased(P=0.000),with significant difference.3.Under the motion intervention,the amplitude of MMN in FP1,FP2 and FPZ was obvious,and FP1 was the maximum amplitude under moderate intensity exercise intervention.Conclusion:1.After moderate and high intensity exercise,the accuracy and amplitude with significant difference,because of the cognitive and exercise intensity,stimulate the encoding of a different order,increase in the number of cognitive resources allocation in the process of cognition.2.The amplitude of MMN was significantly increased after low and moderate intensity exercise,indicating that low and moderate intensity exercise had an effect on MMN.3.The brain regions that induce MMN mainly occur in the frontal and central regions,which can be actively activated after low-intensity and moderate intensity exercise.4.The accuracy of moderate intensity exercise and MMN amplitude was significantly,indicating that moderate intensity exercise has positive influence on the automatic processing ability of information in the brain. |
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