小学高年级学生行为抑制功能及其与体质量指数的关系

发布时间：2019-03-08 17:39

【摘要】：目的探讨不同体重小学高年级学生的行为抑制功能及其与体质量指数的关系,为儿童超重肥胖发生机制研究提供基础资料。方法采用行为抑制的经典实验心理方法"停止信号任务(Stop Signal Task,SST)"范式及其变式,对体重超重小学四、五年级学生(超重组,23例)和正常体重儿童(对照组,40例)的行为抑制能力进行测定分析。结果在经典SST中,超重组中性图片任务的停止任务反应时(SSRT中性)(458.24 ms)及抑制失败率[P(r/s)中性](64.22%)均高于对照组的SSRT中性(382.07 ms)及P(r/s)中性(47.98%)(t值分别为2.799,3.714,P值均0.05)。在SST变式中,超重组在食物图片任务或物件图片任务中的SSRT(406.20 ms,352.36 ms)和食物图片任务的P(r/s)(65.57%)均高于对照组的SSRT(289.34 ms,286.86 ms)及食物图片任务P(r/s)(46.20%)。超重组在食物图片任务的SSRT和P(r/s)均高于其在物件图片任务的SSRT和P(r/s)(P0.05),对照组则差异无统计学意义(P0.05)。BMI与SSRT中性、SSRT物件、SSRT食物、P(r/s)中性、P(r/s)物件均呈正相关(r值分别为0.387,0.308,0.436,0.489,0.485,P值均0.05)。结论超重儿童的行为抑制功能较正常体重儿童差,超重儿童面对食物刺激时行为抑制功能水平更低。行为抑制功能水平与BMI存在负相关。
[Abstract]:Objective to investigate the behavior inhibition function and its relationship with body mass index (BMI) of primary school students with different body weight, and to provide basic data for the study of the mechanism of overweight and obesity in children. Methods the normal form of "stop signal Task (Stop Signal Task,SST" and its variant were used to study the overweight primary school students (overweight, 23 cases) and the normal weight children (control group), and the normal weight children (control group) were divided into two groups: control group (n = 23) and control group (n = 23). The behavior inhibition ability was measured and analyzed in 40 cases. As a result, in classic SST, The stop task response time (SSRT neutral) (458.24 ms) and inhibition failure rate [P (rs) neutral] (64.22%) of superrecombinant neutral picture task were higher than those of control group (SSRT neutral (382.07 ms) and P (r). / s) Neutral (47.98%) (t = 2.799, 3.714, respectively) P = 0.05). In the SST variant, the SSRT (406.20 ms,352.36 ms) and P (rs) (65.57%) of superrecombination in food image task or object image task were higher than that of SSRT (289.34 ms,) in control group. 286.86 ms and food picture task P (rs) (46.20%). The SSRT and P (rs) of superrecombination in food picture task were higher than those in object picture task (P0.05), but there was no significant difference in control group (P0.05). BMI and SSRT were neutral, SSRT object, SSRT food, and there was no significant difference between the control group and the control group (P0.05), but there was no significant difference between the control group and the control group (P0.05). P (r) neutral, P (were positively correlated (r = 0.387,0.308, 0.436, 0.489,0.485, respectively, P = 0.387,0.308, 0.436, 0.489, 0.485, respectively, P = 0. 05, P < 0. 05). Conclusion the behavior inhibition function of overweight children is worse than that of normal weight children, and the behavior inhibition function of overweight children is lower than that of normal weight children in the face of food stimulation. There was a negative correlation between the level of behavioral inhibition and BMI.
【作者单位】：中山大学公共卫生学院妇幼卫生系;
【分类号】：R179

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