TY - JOUR
T1 - Reduced neural responses to food cues might contribute to the anorexigenic effect of acute exercise observed in obese but not lean adolescents
AU - Fearnbach, S. N.
AU - Silvert, L.
AU - Pereira, B.
AU - Boirie, Y.
AU - Duclos, M.
AU - Keller, K. L.
AU - Thivel, D.
N1 - Funding Information:
The authors want to thank the Nestlé Foundation for its support through its 2013 Research Grant funding our energy balance and pediatric obesity projects. We want to particularly thank Dr. SEROG Patrick for his great help and support and all of the adolescents who took part in the study. The authors have no conflicts of interest to disclose. The authors have no financial relationships relevant to this article to disclose.
Publisher Copyright:
© 2017 Elsevier Inc.
PY - 2017/8
Y1 - 2017/8
N2 - Acute exercise has been found to reduce subsequent energy intake in obese adolescents. Although it has been suggested that some neural pathways are involved in this post-exercise energy intake regulation, it remains unknown whether the post-exercise attentional response to food cues differs as a function of weight status. We hypothesize that there will be a reduction in the neural response to food cues as a result of exercise in obese adolescents, but not in their lean counterparts. Fourteen obese and 14 lean adolescent boys (12-15 years) were randomized (within-subjects design) to remain seated (CON) or to exercise 45 minutes at 65% of their maximal capacities (EX). After the exercise or sitting period, the adolescents' cognitive engagement in the processing of food vs. non-food cues was assessed during an attentional computer-based task with electroencephalography (EEG) recording. An ad libitum lunch meal was offered and appetite feelings were assessed (visual analog scales). There was no main effect of condition on energy intake in lean subjects, but obese adolescents ate significantly less following EX compared with CON (P <.05). There was no effect of condition or stimulus type (food vs. non-food) on the EEG-recorded amplitude of the P3b component in lean adolescents. However, the response to food cues was significantly reduced compared with non-food stimuli after exercise in obese participants (P <.01). Following EX, but not CON, total body weight, body mass index, and fat mass were inversely correlated with the EEG response to food–non-food stimuli (all P <.05). However, this response was not associated with ad libitum EI (both P >.1). Acute exercise favors decreased neural response to food cues compared with non-food cues in obese but not lean adolescents, suggesting differential effects of exercise on the neural processing of food cues based on weight status.
AB - Acute exercise has been found to reduce subsequent energy intake in obese adolescents. Although it has been suggested that some neural pathways are involved in this post-exercise energy intake regulation, it remains unknown whether the post-exercise attentional response to food cues differs as a function of weight status. We hypothesize that there will be a reduction in the neural response to food cues as a result of exercise in obese adolescents, but not in their lean counterparts. Fourteen obese and 14 lean adolescent boys (12-15 years) were randomized (within-subjects design) to remain seated (CON) or to exercise 45 minutes at 65% of their maximal capacities (EX). After the exercise or sitting period, the adolescents' cognitive engagement in the processing of food vs. non-food cues was assessed during an attentional computer-based task with electroencephalography (EEG) recording. An ad libitum lunch meal was offered and appetite feelings were assessed (visual analog scales). There was no main effect of condition on energy intake in lean subjects, but obese adolescents ate significantly less following EX compared with CON (P <.05). There was no effect of condition or stimulus type (food vs. non-food) on the EEG-recorded amplitude of the P3b component in lean adolescents. However, the response to food cues was significantly reduced compared with non-food stimuli after exercise in obese participants (P <.01). Following EX, but not CON, total body weight, body mass index, and fat mass were inversely correlated with the EEG response to food–non-food stimuli (all P <.05). However, this response was not associated with ad libitum EI (both P >.1). Acute exercise favors decreased neural response to food cues compared with non-food cues in obese but not lean adolescents, suggesting differential effects of exercise on the neural processing of food cues based on weight status.
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U2 - 10.1016/j.nutres.2017.06.006
DO - 10.1016/j.nutres.2017.06.006
M3 - Article
C2 - 28821320
AN - SCOPUS:85027889368
SN - 0271-5317
VL - 44
SP - 76
EP - 84
JO - Nutrition Research
JF - Nutrition Research
ER -