摘要目的 运用任务态功能磁共振影像(task-fMRI)探究运动成瘾人群的磁共振脑功能影像特点.方法 2018年1至6月通过对江苏当地健身长跑协会成员进行问卷,采用运动成瘾量表(EAI)筛选出29名运动成瘾者[成瘾组,平均(46±4)岁]和26名性别、年龄、平均受教育水平及运动依赖程度相匹配的非运动成瘾者[对照组,平均(46±6)岁],对被试观看运动图片或非运动图片时进行task-fMRI扫描,对两种刺激任务条件下成瘾组与对照组的大脑激活反应进行比较分析.结果 与对照组相比,观看运动图片时,成瘾组的大脑右侧梭回(MNI:x=30,y=-87,z=0)、左侧中央后回(MNI:x=-51,y=-21,z=54)、左额叶内侧上回(MNI:x=-9,y=54,z=30)与右侧枕中回(MNI:x=42,y=-72,z=36)明显被抑制(均P＜0.05).观看非运动图片时,成瘾组左额上回(MNI:x=-12,y=54,z=30)、左额中回(MNI:x=-30,y=18,z=45)、右额下回(MNI:x=42,y=33,z=-12)、右枕中回(MNI:x=42,y=-72,z=36)等脑区被明显抑制(均P＜0.05).结论 运动成瘾组的脑功能成像跟对照组相比存在异常,在观看运动或非运动图片时均存在脑区的活动抑制现象,尤其非运动图片刺激时负激活更明显.

abstractsObjective To investigate the brain activities of exercise addiction (EA) group people with the task-functional magnetic resonance image (task-fMRI).Methods A total of 29 exercise addicts (addiction group,average age 46 ±4 years) and 26 non-exercise addicts (control group,average age 46 ±6 years) matched by sex,age,average education level and sports dependence degree were selected by using exercise addiction index (EAI) through questionnaires to members of Jiangsu Local Fitness and Long-distance Running Association between January 2018 and June 2018.The participants were scanned with fMRI while watching sports pictures or non-sports pictures.The brain responses of the two groups under two stimulation tasks were analyzed and compared.Results Compared with the control group,while watching sports pictures,the right fusiform gyrus (MNI:x=30,y=-87,z=0),left posterior central gyrus (MNI:x=-51,y=-21,z=54),left medial superior frontal gyrus (MNI:x=-9,y=54,z=30),and right middle occipital gyrus (MNI:x=42,y=-72,z=36) were significantly inhibited in the addiction group (t-test,all P＜0.05).When watching non-sports pictures,the addictive group showed the left superior frontal gyrus (MNI:x=-12,y=54,z=30),left middle frontal gyrus (MNI:x=-30,y=18,z=45),right inferior frontal gyrus (MNI:x=42,y=33,z=-12),right occipital gyrus (MNI:x=42,y=-72,z=36),and they were more significantly inhibited than the control group (t-test,all P＜0.05).Conclusion Compared to the control group,the EA group shows significant brain inhibition with visual stimulation,particularly with non-sports pictures.