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目的通过观察脑力负荷前后肥胖青少年Stroop测验中各任务条件下耗时数的变化,初步探讨分析肥胖青少年的部分认知功能。方法采用方便取样,最终254名学生纳入分析,根据体质指数(BMI)进行肥胖程度划分。以韦氏智力量表测试60～70min作为脑力活动负荷,负荷前后分别进行Stroop测验。结果脑力活动负荷前,3组学生Stroop测验各指标的耗时数分别进行比较发现,肥胖组和超重组字色矛盾耗时数明显高于正常组(P<0.05)。脑力活动负荷后,肥胖组和超重组纯颜色和字色无关的耗时数均高于正常组(P<0.05),并且随着BMI Z分的增加,3个指标的耗时数均增加。结论青少年超重和肥胖可明显影响Stroop实验相关认知加工过程,且BMI Z分越高,这种认知加工受累越明显。
OBJECTIVE: To investigate the changes of time-consuming number of tasks in obese adolescents before and after mental stress, and to explore some of the cognitive functions of obese adolescents. METHODS: Convenient sampling was used. The final 254 students were included in the analysis, and the degree of obesity was divided according to body mass index (BMI). The Wechsler Intelligence Scale test 60 ~ 70min as a mental activity load, before and after the load Stroop test. Results Compared with the normal group, the time-consuming number of contradiction in obesity group and overweight group was significantly higher than that of the normal group (P <0.05). After mental activity load, the time-consuming number of pure color and character-independent obesity group and overweight group were all higher than that of normal group (P <0.05). And with the increase of BMI Z score, the time-consuming number of three indicators increased. Conclusion Overweight and obesity in adolescents can significantly affect the cognition process of Stroop experiment, and the higher the BMI Z score, the more obvious the involvement of cognitive processing.