AN INVESTIGATION ON THE NORMAL VALUE OF THE BODY WEIGHTS FOR ADULTS WITH DIFFERENT HEIGHTS IN NORTH CHINA / 营养学报

ABSTRACT

Body weight and height of 10,672 adults (male 6534, female 4318) aged from 18 to over 46 including various kinds of job were investigated in north district of China. The body weight and height were measured by conventional method. All the subjects were divided into three aged groups (18-25, 26-45, over 46) in both sexes respectivly. The correlation regression between height and weight was calculated and significance test of regression coefficient was made.The results showed that the positive correlation was seen between the height and weight in each aged group. There were significant differences between all of aged groups in regression coefficient significance tests, except between 18-25 and 26-45 aged group in female. According to theory of normal distribution, the five types of body were defined in term of mean of height (X) and standard deviation (Sx), namely tallest, taller, middle, lower, lowest. The average of body weight corresponding to height was calculated by regression equation in each group. Meanwhile, standard error (Sy) and 95% distribution range of individual value was calculated in regression line. As mentioned above body weight was divided into five classes (overweight, upper middle, middle, lower middle, underweight). The normal value established in the survey can be used for estimation of nutritional status of adult in north China.