The Relationship between Cardiopulmonary Fitness and Inhibitory Control in Elementary School Children:An fNIRS Study
Objective:To explore the association between cardiorespiratory fitness and inhibitory control in elementary school children,and compare the difference in brain activation patterns between children with high and low cardiovascular fitness groups,so as to provide empirical evidence for revealing the neural mechanisms underlying the inhibitory control of cardiorespiratory function in children.Methods:A total of 140 children aged 7-12 were recruited.They were divided into high and low cardiovascular fitness groups based on the 20-meter shuttle run test.The Flanker task was used to assess the inhibition control of the participants.The 8-channel functional near-infrared spectroscopy was used to monitor the Hemoglobin oxygenation(oxy-Hb)concentration of prefrontal cortex(PFC).Results:Compared to low cardiorespiratory fitness group,children in high cardiorespi-ratory fitness had better task performance,as evidenced by faster reaction time.And high cardiorespiratory fitness group exhibited higher concentrations of oxy-Hb and higher activation in the right dorsolateral prefrontal cortex(R-DLPFC)and in the left dorsolateral prefrontal cortex(L-DLPFC)during the Flanker task.Relevant regression analysis showed that the activation of the R-DLPFC plays a fully mediating role between cardiorespiratory fitness and inhibitory control.Conclusion:The activation of the R-DLPFC is influenced by the cardiovascular fitness,which in turn improves inhibitory control function.