Sun J P
Institute of Child and Adolescent Health, Beijing Medical University.
Zhonghua Yu Fang Yi Xue Za Zhi. 1991 Jan;25(1):15-8.
This study was performed during April through July, 1987 in Beijing. Classified by international reference of weight for height, a sample of 292 children, 9-yrs of age from five primary schools in BJ. The main conclusions were: compared with control groups, the value of PWC 170 of MPEM groups was significantly lower, so were the anthropometric indicators. The values of mid-arm circumference showed no significant difference between the sexual groups, but there was very significant difference between the MPEM and control groups. The value of PWC170 of boys was significantly higher than that of girls. Hemoglobin mean values were within the normal range and no significant differences were found in all groups. This meant that the differences of PWC170 of groups were not due to anemia. Transferrin mean value was significantly lower in MPEM than in control groups in girls. The heart rates, during testing, were significantly higher in MPEM than in control groups. This difference was taken to be evidence that work performance was poorer in MPEM than in controls.
本研究于1987年4月至7月在北京进行。按照国际身高体重参考标准，从北京五所小学抽取了292名9岁儿童作为样本。主要结论如下：与对照组相比，MPEM组的PWC 170值显著更低，人体测量指标也是如此。上臂中部周长值在不同性别组之间无显著差异，但在MPEM组和对照组之间有非常显著的差异。男孩的PWC170值显著高于女孩。血红蛋白平均值在正常范围内，所有组之间未发现显著差异。这意味着各群组PWC170的差异并非由贫血所致。女孩中，MPEM组的转铁蛋白平均值显著低于对照组。测试期间，MPEM组的心率显著高于对照组。这种差异被视为MPEM组工作表现比对照组差的证据。
