Effects Of The Equal Exercise Of Different Prescription Combination Elements On Cognitive Potential P300

Aim: Event related potentials reflect the changes of neural electrophysiological inthe brain cognitive process, the P300is the main indice of cognitive function atpresent. Previous studies have been conducted on the relationship between exerciseand cognitive function, but the conclusion is not consistent. Exerciseprescription elements mainly refer to type of exercise、 intensity、 duration、frequency.The elements of the exercise prescription may affect the effect ofexercise and cognitive benefits.In the study of acute exercise, parameters are usuallyfocused on exercise intensity and duration of exercise.Although there were somereaserches to study the effects of different exercise time and different intensity ofexercise on cognitive function, the parameter control is not strict, so it is difficult toexplain which parameters can change the result,both exercise intensity and theenergy consumption are affecters.In the case of equal energy consumption, Theauthor cannot find the relative report on different effect of exercise intensity oncognition,especially in event-related potentials(ERP). In this paper,we used the CRPof treadmill to evaluate the different effect of exercise intensity(high-intensity,moderate intensity,low-intensity) on P300.Subjects and methods: Through publicity, handing out demographic characteristics,and PARQ&YOU questionnaire18male from Shandong Normal University were selected with informed consent. The Methods adopted include literaturesurvey, mathematical statistics and experiments. Experimental tests are all conductedinside the human movement science lab in Changqing Campus of Shandong NormalUniversity.There are three tests in the experiment.The experiment uses the NDI-200(Poseidon) neural electricity meter to measure the indicators of visual event relatedpotential P300, involves the latency, amplitude and reaction time. we record theduration of exercise, met, VO2max, heart rate, calories and average speed in the model of the CRP on treadmill at different intensity(high-intensity, moderate-intensity,low-intensity). Meantime, we need to measure indicators of visual eventrelated potential P300before the experiment and after the exercise respectively,suggesting the effect on P300at different intensity.Statistic analysis is conducted withSPSS15.0for windows application. Inter-group significant difference is tested with independent-samples t test. Intra-group significant difference is tested with variance analysis of repeated measurement, and all results are presented with mean value and standard deviation.Results: In the case of equality energy consumption at different exerciseintensity,compared with pre-exercise, the latency of P300was significantlyprolonged at Fz after high intensity exercise and after low intensity exercise (P <0.05);Compared with pre-exercise, the amplitude of P300decreased significantly at Fz andPz after high intensity exercise (P <0.05); control with pre-exercise, the reaction timeof P300was significantly prolonged (P<0.01) at Pz after low intensity exercise andthe reaction time of P300was decreased (P<0.01) at Pz after high intensity exercise.There were no effect significantly at moderate intensity exercise.Conclusion: In the case of equality energy consumption, high intensity exercise andlow intensity exercise have negative effect,on cognitive potential P300, showed thelatency and reaction time prolonged, amplitude decreased. There were no effectsignificantly at moderate intensity exercise, suggesting that aerobic exercise haspositive effect on cognition at moderate intensity exercise, some results areinconsistent with the previous studies, the trend of the inverted U type is reflected notonly in the change of P300amplitude, but also reflected in the change of P300latencyand reaction time.