Effects of Different Acute Exercises on Food Suppression Function in Overweight Individuals—Evidence from Behaviors and ERPs
Objective:To explore the effects of acute high-intensity interval exercise(HIIE)and continuous moderate-intensity aerobic exercise(CMIAE)on the food inhibition function of overweight individuals.Methods:A within-subjects design was adopted to study overweight in-dividuals(n=28),To investigate the effects of acute HIIE and CMIAE on food Go/NoGo re-sponse time and correctness as well as brain neural activity N2 and P3 wave amplitudes in over-weight individuals.Results:1)Subjects completed the food Go/NoGo task with significantly shorter Go response times under both exercise conditions(P＜0.001),whereas there was no sig-nificant difference in Go correct and NoGo correct rates;2)overweight individuals showed a picture type main effect in the food Go/NoGo task,i.e.,food-like picture stimuli evoked signifi-cantly higher N2 amplitude than neutral pictures;3)on Cz electrodes,overweight individuals were found to have significantly higher P3 amplitude on NoGo trials than on Go trials(P＜0.05)for high-calorie food pictures,in the quiet control condition only,whereas this difference did not exist in the two exercise conditions(P＞0.05).Conclusions:1)There is an early atten-tional bias towards food-like stimuli in overweight individuals;2)acute HIIE and CMIAE re-duce the allocation of attentional resources to high-calorie foods in overweight individuals;3)acute HIIE exercise is a time-saving and effective exercise regimen for enhancing food inhibi-tion in overweight individuals.
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