The Effects Of Long-term Cognitive Task On Changes Of Neurotransmitters In College Athletes

Purposes: Based on Encephal of Fluctuogram Technology(ET),this paper explored the effects of one-hour connection test(TMT-B)task on athletes' central neurotransmitters and their entropy value through experimental study,and further explored the neurotransmitter mechanism of central fatigue caused by long-term cognitive processing task.Methods: 30 college students from Ningbo University College of Physical Education(second class athletes)were selected as subjects,and the qualified subjects randomly selected were assigned to the experimental group and the control group,with 15 participants in each group.The subjects in the experimental group performed the task of TMT-B connection for 60 minutes,and recorded the behavioral data(correctness,completion time)during the task of TMT-B connection for 60 minutes in real time.The RPE scale and the S-pedigree and entropy of ET were measured before and after the task of 60 minutes connection;The subjects in the control group did not perform any complex cognitive tasks.They rested quietly for 60 minutes in the laboratory.Before and after 60 minutes,the S-spectrum and entropy values of ET were collected,and the RPE scale was tested before and after.By comparing the difference between the experimental group and the control group before and after the test,we tested whether the long-term cognitive task could induce central fatigue and S-lineage changes.Results: the results of one-way anova on behavioral data showed that the correct rate of TMT-B completion in 4 different time periods showed an upward and downward trend,and the second and third time periods were significantly higher than the first and fourth time periods,with significant differences(p<0.01).The average completion time of the four different time periods showed a downward trend with significant difference(p<0.01);The results of repeated measurement variance analysis of RPE questionnaire data in experimental group and control group showed that the RPE questionnaire data in experimental group T2 was significantly higher than that in T1(p < 0.01),while there was no significant difference in control group(p > 0.05);Anova results of repeated measurement of inhibitory neurotransmitters in the experimental group and the control group showed that S4 series,namely 5-hydroxytryptamine(5-HT),increased significantly(p<0.01),and gamma-aminobutyric acid(GABA)showed no significant difference(p>0.05).The results of anova of repeated measurements of excitatory neurotransmitters in the experimental group and the control group showed that the S5 series representing acetylcholine decreased significantly(p<0.05),and there was no significant difference between glutamate(Glu),norepinephrine(NE)and dopamine(DA)(p>0.05);The repeated measurement of entropy in the experimental group and the control group showed that the entropy of T2 in the experimental group was significantly higher than that of T1(p<0.01),while there was no significant difference in the control group(p>0.05).Conclusion: Long-term cognitive tasks induce cognitive central fatigue,accompanied by changes in behavioral indicators;Long-term cognitive tasks lead to increased activity intensity of S4 in subjects with central fatigue;Prolonged cognitive tasks did not induce changes in other excitatory neurotransmitters;Prolonged cognitive processing tasks may lead to reduced brain ordering.