1 From the Department of Pediatrics, The Mount Sinai Medical Center and Rainbow Babies and Childrens Hospital, Case Western Reserve University, Cleveland
To investigate the effects of frequency and duration of breast-feeding on infants' milk intake and weight gain, two groups of mother-infant pairs were studied during the first month after delivery. Mothers in the control group (n = 24) nursed their infants on a 3- to 4-hour schedule. Those in the experimental group (n = 20) were encouraged to nurse frequently. During the first 14 postpartum days, all mothers recorded the length and time of each breast-feeding. On the 15th and on the 35th postpartum day, milk intake per feeding for 24 hours and infant weight gain from birth were measured. During the first 2 weeks after delivery, mothers in the experimental group nursed more frequently (9.9 v 7.3 feedings per 24 hours; P <.0001). On day 15, their infants took more milk (725 v 502 mL/24 h; P <.0002), and had gained more weight from birth (561 v 347 g; P < .02). On day 35, although mothers in the experimental group were still nursing more frequently (9.8 v 6.8 feedings per 24 hours; P <.01), milk intake and weight gain from birth were not significantly different.
Key Words: breast-feeding breast milk feeding frequency milk intake
Submitted on October 18, 1982
Accepted on December 14, 1982
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