对青少年体重日变化规律的分析

以大连市7～17岁的569名（男291名，女278名）学生为研究对象，在不同时段进行测量。结果表明，上午与下午的体重差值，男生在-0．05～0．46kg之间，其均值为0．17kg；女生在0．10～1．14kg之间，其均值为0．21kg。男、女青少年体重用餐后体重有所增加，但体重的日均值时段没有集中出现，分布相对分散。因此，为了提高测试效率，保证下午测量体重的准确性，建议制定体重测量误差的修正系数。

Analysis on Changing Regulation of Teenager''''s Weight at Daytime

Taking the 569 students aged at 7~17 (male students 291,female students 278) from Dalian city as research subjects,this paper makes measurement on weight during the different period of daytime.The result shows that the difference value of weight in the morning and afternoon is 0.05~0.46kg for male students.The average value is 0.17kg.For female students,the difference value of weight is 0.10~1.14,the average value is 0.21kg.The weight has little increase for male and female students after meal,but daily average value of weight has not concentrated emergence with relative dispersed distribution.Therefore,it suggests that the amendment of measurement coefficient should be set up in order to improve the effective and ensure the accuracy of measurement in the afternoon.