| In this study,35 national shooting athletes participate the 3-time(4 times for individual athletes) experiments of relax regulation by using SPCS,covering games of tug-of-war,bodhi tree,star and archery as the four kinds of biofeedback from the screen.And finally select 30 athletes' data as the effective data and one individual case separately for analysis via the method of HRV frequency-domain,trying to find the effects of biofeedback relaxation regulation on shooting athletes' heart rate variability, and psychological adjustment after the athlete's subjective feelings are analyzed in light of their subjective evaluation test-conditioning effectiveness.After the findings of statistical and comparative analysis and discussion,major conclusions are as follows:â‘ The shooting athletes relatively have stable heart rate variability,not with the regulation of the increase in the number of successive increases.The regulation of 3 times,2 times the maximum value of TP,and the 1st and 3rd change was not obvious. This change in trend among the four forms of games feedback is the same.â‘¡The shooting athletes' heart rate variability vary from the external environment.In high-stress environment,the athletes' heart rate variability is relatively small,mainly reflected in the regulation of the 2nd and 3rd.At the 3rd high-stress environment, athletes' HRV data showed lower values for the TP.â‘¢The shooting athletes' sympathetic activity get decreased with the time for successive regulations.Performance for athletes of VLF and LFnorm decline in value.â‘£The shooting athletes' autonomic nervous balance indicates an inconsistent trend among the four forms of feedback from the screen in the 3 times of relaxation regulations. This is mainly reflected in the LF / HF on the value.LF / HF in tug of war is at the trend of successive reduction,LF / HF in the bodhi tree is the highest in the 2nd time,LF / HF in star and archery increases successively.
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