| Background:The acquisition and long-term retention of motor skills play a fundamental role in our daily life.Existing studies have shown that motor learning has a strong positive effect on executive function,and motor learning can help improve cognitive performance of executive function,but the neural mechanism of the relationship between motor learning and executive function needs to be studied and interpreted urgently.From the perspective of white matter structure network,it has become a key problem to fully reveal the neural mechanism of motor learning affecting executive function.Objective:To investigate the effects of football juggling learning on executive function and white matter structural network of college students.Furthermore,the relationship between the improvement of executive function behavior and the change of topological properties white matter structural network by motor learning was further explored,to elucidate the brain mechanism of motor learning promoting executive function from the level of white matter structural networkMethods:In this study,89 college students were selected as subjects,and they were divided into control group（N=36）and experimental group（N=53）on a randomly basis.The experimental group underwent 70 times of football juggling learning,while the control group underwent routine daily life.Changes of the inhibition,updating and shifting functions of executive function were evaluated by Flanker,N-back and More-odd shifting tasks.Using magnetic resonance imaging,and combining deterministic fiber tracking and graph theory,the white matter structure network was constructed to evaluate its the changes of topological properties.Results:（1）Significant differences were found in the discordance condition of Flanker task[F（1,87）=5.021,P=0.028<0.05,Partial η2=0.055],the non-conversion condition of Shifting task[F（1,87）=6.155,P=0.015<0.05,Partial η2=0.066]and conversion condition of Shifting task[F（1,87）=5.171,P=0.025<0.05,partial η2=0.056]after 70 times football juggling learning.（2）Significant differences were found in the characteristic path length（k）[F（1,87）=5.092,P=0.027<0.05,Partial θ2=0.055]and global efficiency（Eg）[F（1,87）=10.272,P=0.002<0.05,partial η2=0.106].（3）Significant differences were found in nodal clustering coefficient of PreCG.L[F（1,87）=4.691,P=0.033<0.05,Partial η2=0.051],ORBsup.R[F（1,87）=5.913,P=0.017<0.05,Partial η2=0.064],ROL.R[F（1,87）=6.592,P=0.012<0.05,Partial η2=0.070],DCG.L[F（1,87）=5.950,P=0.017<0.05,Partial η2=0.064],PCG.R[F（1,87）=4.150,P=0.045<0.05,Partial η2=0.046],CAL.L[F（1,87）=9.039,P=0.003<0.05,Partial η2=0.094],IPL.R[F（1,87）=5.228,P=0.025<0.05,Partial η2=0.057],PUT.L[F（1,87）=9.750,P=0.002<0.05,partial η2=0.101],after 70 times football juggling learning.（4）Significant negative correlation were found between the change of discordance of Flanker task and nodal clustering coefficient of ORBsup.R（r=-0.276,P=0.046<0.05）,the change of discordance of Flanker task and nodal clustering coefficient of IPL.R（r=-0.295,P=0.032<0.05）,the change of discordance of Flanker task and nodal clustering coefficient of PUT.L（r=-0.276,P=0.045<0.05）,and the change of Non-conversion of Shifting task and nodal clustering coefficient of IPL.R（r=-0.272,P=0.049<0.05）.Conclusions:（1）Football juggling learning can effectively improve the inhibition and shifting of executive function in college students,but the subfunction of updating cannot be significantly improved;（2）Football juggling learning can change the white matter structure network topological properties in college students;（3）The improvement of executive function inhibition was significantly correlated with the clustering coefficient of ORBsup.R,IPL.R and PUT.L node,and the improvement of shifting function was significantly correlated with the clustering coefficient of IPL.R.These results suggest that the neural mechanism of executive function changes induced by motor learning may involve the remolding of white matter structure network of the frontal lobe-striatum circuit. |
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