Hello, my name is Summer Schwan and I'm a nursing student from the University of North Dakota. In my child bearing nursing class we were asked to discuss a topic of our choice on a discussion board. Myself being a nursing student and also an aerobics instructor, I was curious about the effects that diet and exercise had on lactation.
According to a study done by Wright et al., (2002), there is no difference between infant acceptance of breast milk one hour after moderate and intense levels of exercise. In this study they also measured levels of lactic acid in the breast milk, and even with the increase after exercise, breast milk acceptance was the same as it was one hour before exercise.
In another study that I read done by McCrory (2001), it concluded that weight loss in lactating women 4-14 weeks postpartum did not impair infant growth. One thing to keep in mind with this study is that the women they used as subjects were already overweight postpartum with a BMI of 25 or more.
The last article that I read done by Ringdahl (2002), summarizes a lot of the same concepts that I previously touched base on from the first two articles. This article emphasizes the importance of exercise in postpartum mothers, and states that it is ok to do both diet and exercise and still breastfeed with in reason. The article suggests that a mother breastfeeding can lose up to 0.5 kg per week and not restrict infant growth.
The questions that I have for you are;
1) Is there a point at which exercise can be too much on the breastfeeding mother resulting in nutritional deficit for the infant?
2) If so, are there any other measures that can be taken to counteract nutrition deficit with out decreasing exercise?
References:
Wright, Kc S., Quinn, J. Timothy, & Carey, Gale B. (2002). Infant Acceptance of Breast Milk After Maternal Exercise. Pediatrics, 109(4), 585-590.
McMrory, Megan A. (2001). Does Dieting During Lactation Put Infant Growth at Risk? Nutrition Reviews, 59(1), 18-22.
Ringdahl, Erika N. (2002). Promoting Postpartum Exercise: An Opportune Time for Change. The Physician and Sportsmedicine, 30(2), 31.
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