补充复合微量营养素对学龄儿童记忆能力的影响

Effect of multi-micronutrients supplementation on memory ability of schoolchildren

目的研究复合微量营养素对学龄儿童记忆能力的影响。方法采用随机双盲对照实验,选择四川省城乡各一所小学9～11岁儿童为观察对象,将275名儿童以班为单位,随机分为试验组和对照组。试验组儿童服用复合微量营养素咀嚼片,对照组儿童服用安慰剂咀嚼片,干预时间4个月。在干预前、后分别进行记忆能力、智力水平、反应时等指标测定。结果试验组儿童记忆商及累积计数、视觉再生、触摸测验项目量表分显著高于对照组(P<0.05)。农村试验组儿童的记忆商增加值大于农村对照组(P<0.05)。试验组和对照组智力水平在补充复合微量营养素前后差异无显著性。结论复合微量营养素在一定程度上改善了儿童记忆能力。

Objective To study the effect of multi-micronutrients on memory ability of school children. Methods In this double-blind and placebo-controlled test, the children aged 9 to 11 years, in the forth grade from two primary school in Siehuan Province, were recruited after health examination. A total of 275 children were randomly designed by the whole class as the test group taken muhi-micronutrient supplement and the control group given with placebo for 4 months. Memory quotient, intelligence, average reaction time of children in two clusters were assessed before and after supplementation. Results The mean scores of the memory quotients and the Wechsler Memory Scale scores （Digit summation ／ Visual Reproduction ／ touch memory ）of multi-micronutrients group were significantly higher（ P 〈 0.05）than those of control group. The mean incremental scores of the memory quotients of the rural test group were significantly higher（ P 〈 0.05 ） than those of the rural control group. There was no significant difference between the test group and control group in intelligence. Conclusion It was seemed that multi-micronutrients supplement could improve memory ability of schoolchildren.