论文部分内容阅读
目的:观察不同水平男子短距离场地自行车运动员脑电变化,为探讨自行车运动员技术动作发挥的中枢机制提供依据。方法:研究对象为8名二级和7名健将级男子自行车运动员,应用脑电图(EEG)仪测试受试者在安静闭目和表象1公里场地计时赛时的脑电变化。结果:(1)安静时,二级运动员和健将级运动员EEG的功率谱成对称性分布,且两组运动员的EEG对应各区总功率无显著性差异(P>0.05)。(2)表象时,二级运动员EEG发生去同步化,但健将级运动员EEG的功率谱成对称性分布。(3)二级运动员左、右侧顶区与枕区α指数比值表象与安静状态下相比均无显著性差异(P>0.05),健将级运动员左、右侧有显著性差异(P<0.05)。(4)安静时,健将级运动员顶区和枕区脑电活力比值(β/α,%)与二级运动员比较无显著性差异(P>0.05);表象时,两组运动员脑电活力比值有显著性差异(P<0.05)。结论:健将级男子短距离场地自行车运动员中枢神经系统对外界信息的整合及技术动作协调能力优于二级运动员。
Objective: To observe the changes of electroencephalogram (EEG) of cyclists in different levels of men’s short-distance cyclists, and provide basis for discussing the central mechanism of cyclists’ technical movements. Methods: Eighteen second-class and seventh-class men’s cycling athletes were enrolled in this study. EEG was used to test the EEG changes of the participants during the time-trial of quiet eyesight and appearance of 1km. Results: (1) In the quiet time, the power spectrum of EEG of secondary athletes and healthy athletes was symmetrical distribution, and there was no significant difference between the two groups (P> 0.05). (2) When EEG of secondary athlete is de-synchronized, the power spectrum of athlete EEG is symmetrical. (3) There was no significant difference between the left and right top area and the occipital α index (P> 0.05), while there was a significant difference between the athletes’ right and left athletes (P < 0.05). (4) When quiet, the ratio of electroencephalogram (β / α,%) between top athlete and occipital athlete of athletes at no athlete level had no significant difference compared with that of second athlete (P> 0.05) There was significant difference (P <0.05). Conclusion: The integration of the central nervous system of the athletes of the athletes in short distance on the position and the skill coordination of technical movements is superior to that of the second-class athletes.