摘要
将108名(男48,女60)7~8岁儿童随机等分为性别组成一致的三组,以随机双盲法进行三种为期70天的补锌治疗试验:锌20mg(7)、锌20mg+微量营养素(ZM)、微量营养素(M)。结果表明,补锌能显著提高受试儿童智商(IQ)和学习成绩,同时补充微量营养素促进作用更明显。提示:参试部分儿童中存在着不同程度的锌缺乏,并因此使智能发育受到损伤。
children (48 boys and 60 girls) from a city primary school in Qingdao, ages 7 to 8 years, were studied. The subjects were randomly assigned in same numbers by sex to three 70 days treatments: zinc 20mg/d plus micronutrients(ZM), micronutrients without zinc(M),or zinc 20mg/d without micronutrients(Z), and treated double-blind. Intelligence quotient(IQ) of the subjects were measured before and after the treatments. And marks of term-end examinations were also collected and compared with preceding ones. The trial showed IQ of the children from ZM and Z groups increased significantly,but less in M group. All the three groups had lower marks in the examination than in last one because of increased question difficulties,but the largest dropping occurred in M group. The subjects given ZM lost least. The findings show that some of children are zinc deficient and their intelligence development are impaired by zinc depletion.
出处
《中国行为医学科学》
CSCD
1995年第3期148-150,122,共4页
Chinese Journal of Behavioral Medical Science
关键词
锌
智商
学习成绩
学龄儿童
Zinc Intelligence quotient School children Class test mark