长期高策略性技能训练对运动员大脑白质结构的影响:一项DTI研究  

Effects associated with long-term training in sports requiring high levels of strategy on brain white matter structure in expert players:A DTI study

作　　者：祁亚鹏 王怡萱 朱桦 周成林[1] 王莹莹[1] QI Yapeng;WANG Yixuan;ZHU Hua;ZHOU Chenglin;WANG Yingying(Department of Psychology,Shanghai University of Sport,Shanghai,200438,China;School of Biological Science and Medical Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China)

机构地区：[1]上海体育学院心理学院,上海200438 [2]北京航空航天大学生物与医学工程学院,北京100191

出　　处：《心理学报》2021年第7期798-806,共9页Acta Psychologica Sinica

基　　金：国家自然科学基金项目(31900790)资助。

摘　　要：目前关于运动员经验优势的脑机制还存在争议,尤其对于涉及较多认知过程参与的高策略性技能项目运动员,其大脑白质结构可塑性变化还需进一步探究。研究横向对比了乒乓球运动员和非运动员大脑白质纤维束的弥散张量成像数据。结果发现,相比于非运动员,乒乓球运动员在连接背侧和腹侧通路脑区的双侧皮质脊髓束、左侧上纵束、左侧下纵束和双侧额枕下束的各向异性值(FA)更大,进一步分析发现,部分腹侧通路白质纤维束FA增加的原因是径向扩散系数(RD)下降。研究结果支持了动作双通路模型。提示经过长期高策略性技能训练,乒乓球运动员在背侧和腹侧通路上的白质纤维束结构完整性增强。Previous brain imaging studies have shown that the specialized experience achieved by expert sports players after years of training contributes to plasticity in both brain function and structure.However,changes in brain plasticity related to participating in various types of sports,specifically sports that involve higher-level strategies and cognitive function,remain unclear.Table tennis is a sport requiring high levels of strategy.Thus,the present study investigated the white matter structure of the brain in expert table tennis players who had undergone long-term training.Given the accumulating evidence that action processing in the brain occurs along two distinct pathways—dorsal and ventral—we hypothesized that,in addition to changes in the white matter of the dorsal sensorimotor system,the white matter in the ventral pathway linking brain regions related to higher-level cognitive function would differ between expert table tennis players and nonplayers.An investigational group of 31 expert table tennis players(20.06±1.69 years of age)and a control group of 28 college students(20.68±1.66 years of age)who had no professional training in table tennis were recruited for the study.The table tennis players were members of university teams,and each player had more than 7 years of table tennis training.Diffusion tensor imaging techniques were used to compare white matter microstructure properties of the brain between expert players and nonplayers.Statistical analyses were performed using independent t-tests.Further analysis was conducted for the expert player group to assess whether any correlation existed between fractional anisotropy(FA)values and training time.Consistent with our hypothesis,the white matter microstructure properties of both the dorsal and ventral pathways in expert table tennis players significantly differed from those in nonplayers.Specifically,FA values in the bilateral corticospinal tracts,which mainly connect brain regions in the dorsal sensorimotor system,were higher in experts than in no

关 键 词：脑结构可塑性 高策略性技能项目 乒乓球运动员 弥散张量成像 

分 类 号：B849[哲学宗教—应用心理学] G804.8[哲学宗教—心理学]