The longitudinal changes on human milk volume of 27 Korean lactating women(primiparae=10, multiparae=17) from 0.5 to 6 months after parturition have been studied by test -weighing method in Cheongju and Anseong area.
The human milk volume per day increased to 2 months postpartum, and then decreased during lactation. The mean volume(g/day) at 0.5, 1, 2, 3, 4, 5 and 6 months were 634, 810, 847, 840, 844, 810 and 732g respectively The average volume were
791(±149) and
786(±131)g for primiparae and multiparae, respectively. the overall mean volume was 788±135g/day. The distribution of the individual mean volume during the first 6 months of lactation were found 450~549g(3.7%), 550~649(11.1%), 650~749g(22.2%),
750~849g(37.1%), 850~949g(18.6%). 950~1049g(3.7%), and 1050~1149(3.7%). The mean volume between primiparae and multiparae during lactation was not significantly different. However, the volume at 0.5months postapartum was significantly lower than
other
periods. The peak milk volume during the lactation was observed at 3 months postpartum for primiparae(40%), 2months postpartum for multiparae (35.3%), and 2 months postpartum for total lactating women(29.6%).
The volume of human milk had a significant positive correlation with peak volume and infant mild intake, but no correlation with maternal age, weight before delivery, weight before delivery, height, and birth weight.
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