摘要
为运动影响大脑功能、结构可塑性的神经机制研究提供客观的影像学证据。基于静息态功能磁共振成像和结构磁共振成像,采用动态低频振幅及基于体素的形态学测量方法,分析中等强度有氧训练后大脑功能活动及灰质体积的变化,纳入20名健康成年被试者参与6个月有氧运动训练。采集所有被试者运动训练前后rs-fMRI和结构磁共振数据并进行dALFF及VBM分析,提取差异脑区。结果显示:6个月中等强度有氧运动训练后,右侧颞中回、海马旁回、中央后回、楔前叶等脑区的dALFF较训练前增高;左侧额下回、额中回以及右侧的缘上回、角回等脑区的dALFF较训练前降低。研究认为,中等强度有氧运动训练可以引起大脑执行控制网络及额顶网络相关脑区功能可塑性改变。
The purpose of this study is to provide objective imaging evidence for the study of the neural mechanism of the effect of exercise on brain functional(structural)plasticity.Based on resting state functional magnetic resonance imaging(rs-fMRI)and structural magnetic resonance imaging,dynamic amplitude of low-frequency fluctuation(dALFF)and voxel-based morphological(VBM)measurements were used to analyze the changes of brain functional activity and gray matter volume after moderate-intensity aerobic exercise.Both rs-fMRI and structural MRI data were collected for 20 healthy adult volunteers before and after 6 months of aerobic exercise.The data were separately used for dALFF and VBM analyses to identify regions showing aerobic exercise training related changes.Results show that compared with pre-exercise,6-month aerobic exercise training induced significantly increased dALFF in the right middle temporal gyrus,right parahippocampal gyrus,right postcentral gyrus and right precuneus,and decreased dALFF in the left inferior frontal gyrus,left middle frontal gyrus,right supramarginal gyrus and right angular gyrus.The conclusion reveals moderate-intensity aerobic exercise can cause changes in the brain functional plasticity in some regions of executive control network and frontoparietal network.
作者
赵海军
李贞
詹文峰
ZHAO Hai-jun;LI Zhen;ZHAN Wen-feng(School of Physical Education,South China Normal University,Guangzhou 510006,China;Institute for Brain Research and Rehabilitation,South China Normal University,Guangzhou 510631,China;Radiology of Guangdong Second Provincial General Hospital,Guangzhou,510310,China)
出处
《体育学刊》
CAS
CSSCI
北大核心
2021年第6期139-144,共6页
Journal of Physical Education
基金
广东省科技计划重点专项(2017A020215077)。
关键词
运动生理学
有氧运动
动态低频振幅
大脑可塑性
静息态功能磁共振成像
灰质体积
sports physiology
aerobic exercise
dynamic amplitude of low-frequency fluctuation
brain plasticity
resting-state functional magnetic resonance imaging
gray matter volume
