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筛选130例孕妇,分从事重体力劳动和轻体力劳动者两组。所有孕妇身高相似,每日饮食摄入的蛋白质、热量约低千世界卫生组织推荐标准的70％,对孕期母体体重的增加、胎儿生长情况及出生体重进行了测定。从孕12周前测定孕妇体重,作为母体在妊娠开始时的营养指标。早孕期母体体重对出生儿体无重要意义。孕期母体体力劳动强度和营养对胎儿出生体重有明显影响。从事重体力劳动者,母体体重增加平均值是3.3±2.4kg,足月儿出生体重是3.068±355;从事经体力劳动者,母体体重增加平均值是5.9±3.3kg,足月儿出生体重是3.270±368g。由此显
Screening 130 pregnant women, divided into heavy manual labor and light manual workers in both groups. All pregnant women of similar height, the daily dietary intake of protein, calories, about 70% lower than the World Health Organization recommended standards for the increase of maternal body weight during pregnancy, fetal growth and birth weight were measured. Determination of pregnant women from 12 weeks pregnant weight, as the maternal nutrition indicators at the beginning of pregnancy. Maternal body weight in early pregnancy is of no significance to a born child. Pregnancy maternal physical labor intensity and nutrition have a significant impact on the birth weight of the fetus. Engaged in heavy manual labor, the average weight gain of the mother is 3.3 ± 2.4kg, full-term children birth weight is 3.068 ± 355; engaged in manual work, the average weight gain of the mother is 5.9 ± 3.3kg, full-term birth weight is 3.270 ± 368g. Thus significant