| Research objective: : The fierce competition of modern archery competition will produce continuous high-intensity stimulation to the central nervous system of athletes.Archery is a kind of mental and technical events.It can regulate brain function,prevent central fatigue,improve sensory function,ensure the quality of technical movements,and regulate the psychological state of archers.To strengthen the recognition of archer's brain function is the basis for us to establish new training guiding ideology,improve training methods and means,and improve training quality.Therefore,this study analyzes the characteristics of brain EEG changes of archers in Shanxi Province under the condition of quiet and closed eyes and sports image before the second youth games,in order to provide data support and theoretical reference for archers' functional state monitoring and training effect evaluation.Research methods: According to the actual situation of Shanxi archery team preparing for the second youth league and the characteristics of EEG technology,this paper explores and deepens the recognition of the EEG characteristics of archers in the training practice by using the methods of literature,questionnaire,experiment,interview and mathematical statistics,and adopts the Contec Kangtai KT88-3200 digital EEG topograph to prepare for the second youth league In the pre competition training stage,EEG data were collected and recorded for five minutes in two states of quiet closed eyes and motion image.Then,the original EEG without false trace was intercepted for 30 seconds by using the PC software egg32 digital EEG topographer.The power values of the 16 lead ? wave and ? wave related to the archery were statistically analyzed by using the digital topographic map and EEG topographic map to know and understand the EEG characteristics of archers in Shanxi Province.Research results:(1)There was no significant difference in ?1 power value between male and female athletes under the condition of quiet and closed eyes;there was a gender difference in ?2 power value,among which,the ?1 power value in the left and right center of male athletes was significantly higher than that of female athletes(P < 0.05),while the ?2 power value in the right top area and right posterior temporal area was significantly lower than that of female athletes(P < 0.01);among the sports levels,athletes of level 1 and above were in the right middle The power values of central and right posterior temporal ?2 were significantly higher than those of secondary and lower archers(P < 0.01),while the power values of left central ?1 and?2 were significantly lower than those of secondary and lower archers(P < 0.01,P< 0.05);during training years,the power values of left parietal area ?1,left central ?1 and left central ?2were significantly higher than those of six years and lower archers(P< 0.01,P < 0.05);The power values of right posterior ?1 and ?2 were significantly higher than those of six years and lower archers(P < 0.05)The power value of temporal ?2 was lower than that of athletes of six years or less(P < 0.01).(2)The power values of ?1 and ?2 in right occipital area and right middle temporal area of male athletes were significantly higher than that of female athletes(P < 0.01),while the power values of ?1 and ?2 in left central area and left anterior temporal area of male athletes were significantly lower than that of female athletes(P< 0.05),and the power values of ?1 and?2 in left central area and left central area,right posterior temporal area and left occipital area of first and above athletes were significantly higher than those of female athletes in the state of quiet and closed eyes The power values of ?1 in left central and left middle temporal,?2 in left central and left anterior temporal were significantly higher than those of athletes of six years or less(P < 0.05),while the power values of ?1 and ?2 in right occipital area,right parietal area and right middle temporal of archers of six years or less were significantly higher than those of athletes of six years or more(P < 0.01).(3)The power values of ?1 in right parietal area and right posterior temporal area of male athletes were significantly lower than those of female athletes(P < 0.05),while the power values of ?2 in left parietal area and right central area of male athletes were significantly higher than those of female athletes(P< 0.05,P < 0.01),and the power values of ?1 in right posterior temporal area and ?2 in right central and right posterior temporal area of male athletes were significantly higher than those of female athletes at or above the first level The power value of left central ?2 was significantly lower than that of the second level and below athletes(P < 0.05);during the training years,the power value of right posterior temporal ?1 of the athletes over six years was significantly lower than that of the athletes under six years(P < 0.01),while the power value of left parietal,left central and left posterior temporal ?2was significantly higher than that of the athletes under six years(P < 0.05,P < 0.01).(4)The ?1 power values of left parietal area,left central area and right occipital area and ?2power values of left parietal area,left and right central area,right occipital area,left and right anterior temporal area and right middle temporal area of male athletes were significantly higher than those of female athletes(P < 0.05,P< 0.01);there was no significant difference in?1 power values of brain areas between sports levels.The power values of ?2 in left anterior temporal and right posterior temporal of athletes above the first level were significantly lower than those of athletes below the second level(P < 0.01);during the training years,the power values of ?1 in right central and ?2 in left anterior temporal of athletes above six years were significantly higher than those of athletes below six years(P < 0.05),while the power values of ?2 in right posterior temporal were significantly lower than those of athletes below six years(P < 0.05).Research conclusion:(1)Under the state of quiet and closed eyes,archers in the pre competition training stage are compared according to different genders,sports grades and training years,and there are significant differences in ? power values,among which male athletes are in a relatively relaxed state before the competition;athletes with low grades have a better concentration of consciousness;athletes with longer training years have a higher level of brain awakening and a good self-condition.(2)Under the condition of sports image,archers in the pre competition training stage were compared according to different genders,sports grades and training years.There were significant differences in the ? power values between different genders.The activation level of brain neurons of female athletes was high under the stimulation of sports.(3)Under the condition of quiet and closed eyes,archers in the pre competition training stage are compared according to different genders,sports grades and training years,and there are significant differences in ? power value,among which the female athletes in the pre competition stage have relatively high tension;the athletes in the low level have strong stress response and are in the appropriate tension state;the athletes with long training years have awakening level in the main functional brain areas of archery Good,suitable for excitation.(4)Under the condition of sports image,there are significant differences in ? power value between athletes in pre competition training stage according to different gender,sports grade and training years.Among them,male athletes have strong ability of information processing and action coordination under the stimulation of sports,resulting in good changes of body adaptation compared with the competition;athletes with low level can better adapt to the tense atmosphere of competition and accumulate The adjustment of polar self emotion and state;although the longer the training period,the longer the athletes can maintain their own special characteristics,there are some tensions. |
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