【摘要】 目的探讨体质量指数(BMI)与小学生执行功能的关系,为非正常范围BMI小学生执行功能的早期干预提供参考依据。方法采用BMI测试与执行功能的Flanker,1-back,More-odd shifting任务对从湖北省荆州市和江苏省常州市分层抽取的1 086名小学生的身高、体重以及执行功能各子功能进行测量。结果在控制性别与年级后,在抑制功能均值上,超重肥胖与正常体重小学生之间差异有统计学意义(P<0.05),超重肥胖(6.16 ms)>正常体重(-1.46 ms);在刷新功能均值上,超重肥胖与低体重、正常体重小学生之间差异具有统计学意义(P<0.01),超重肥胖(1 071.31 ms)>低体重(942.12 ms)与正常体重(935.62 ms);在转换功能均值上,超重肥胖与正常体重、低体重小学生之间差异具有统计学意义(P<0.05),超重肥胖(401.07 ms)>正常体重(362.11 ms)与低体重(341.97 ms);在抑制、刷新与转换功能均值上,低体重与正常体重小学生之间差异均无统计学意义(P值均>0.05)。结论超重肥胖小学生抑制功能差于正常体重小学生,超重肥胖小学生的刷新与转换功能差于正常体重与低体重小学生;低体重与正常体重小学生执行功能差异不明显。更多还原

【Abstract】 Objective To examine the effect of body mass index( BMI) on executive function among elementary school students. Methods Participants’ body weight and height were measured. Executive functions were assessed by computerized cognitive tests: Flanker,1-back,and More-odd shifting tasks. Results After controlling for gender and grade,a statistical significance was found in inhibition function between overweight / obesity( 6. 16 ms) and normal body weight(- 1. 46 ms) students( P <0.05). There was also significant difference in the mean values of updating function between overweight / obesity( 1 071.31 ms) and normal weight( 935.62 ms) students and between overweight / obesity and low weight( 942.12 ms) students( P< 0.01). Significant differences in switching function were found between overweight / obesity( 401.07 ms) and normal weight( 362.11 ms) and between overweight / obesity and low weight( 341.97 ms)( P<0.05). Students with low weight or normal weight showed no differences in inhibition,updating,and switching. Conclusion Overweight / obesity students show significantly worse inhibition,updating and switching functions than those with normal weight. The findings provide a rationale for early interventions to improve executive functions among overweight or obese students.更多还原