The Effect Of Acute Stress On Executive Function Of Obesity Adolescents

Adolescent obesity has become an increasingly serious health problem.Numerous studies have shown that obesity can impair the executive function of adolescents.Executive function is mainly responsible for the regulation of various cognitive processes,and plays an important role in successfully resisting temptation and avoiding impulsive behaviors(such as emotional eating and overeating).Acute stress can cause a series of physical and psychological reactions of individuals.Acute stress sources are ubiquitous in adolescents’ lives.Studies have shown that acute stress can affect adolescents’ executive function,but the mechanism of acute stress on obese adolescents’ executive function impact is unclear.In view of this,this study explored the impact of the executive function of obese adolescents under acute psychological stress on the effects of food-specific stimulation from behavioral results and ERP results.Study 1 mainly explores the effectiveness of using Trier’s Social Stress Paradigm(TSST)to stimulate subjects’ acute stress state under laboratory conditions.Study 1 recruited 20 adolescents,10 of whom were normal and 10 were obese.The TSST paradigm was used in the laboratory to induce the stress state of the adolescents.The results are as follows:(1)The scores of all subjects on the State Anxiety Scale increased significantly after the TSST task was completed,indicating that the successful use of TSST in the laboratory induced the stress state of adolescents;(2)Obese adolescents’ stress after the TSST task The State Anxiety Scale score was significantly higher than that of normal-weight adolescents,indicating that after acute stress is induced,obese adolescents have more intense stress than normal-weight adolescents.Study 2 mainly explores the effect of acute stress on executive function of obese adolescents under food stimulation conditions.Thirty-six adolescents were divided into obese groups and normal body reorganizations according to BMI index.According to the TSST task in Study 1,the stress state of adolescents was induced,and the executive function of adolescents was evaluated according to the double-choice Oddball task completed by adolescents of different weight levels before and after stress.The main analysis contents of the affected situation are subject’s behavioral response time,N2 wave amplitude,and P3 wave amplitude.The results are as follows:(1)As same as study 1,the scores of all adolescent subjects on the State Anxiety Scale after the completion of the TSST task were significantly greater than those before the task,indicating that the TSST task effectively induced the acute stress state of the adolescent subjects;(2)In dual choice Oddball task,the response time of all subjects to the deviation stimulus was longer than that of the standard stimulus,indicating that the dual-choice Oddball task caused the subject’s inhibitory control effect;(3)After the acute stress state was induced,the dual-choice Oddball task was induced by the food-specific stimulus Among them,compared with normal adolescents,obese adolescents have a larger RT difference(the difference in response time between deviation stimulus and standard stimulus)when they complete inhibition control.In terms of EEG components,the N2 wave amplitude of obese adolescents reflecting conflict monitoring ability is smaller,and the P3 wave amplitude reflecting the direct index of inhibition and control processing is larger.In summary,this article draws the following conclusions: in the food-specific stimulus inhibition control task,obese adolescents after stress-induced inhibition control processing efficiency are lower than that of normal-weight adolescents.That is executive function of obese adolescents are more severely impaired.It is easier to control food stimulus inhibition failure.