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Nutrients 2018, 10(9), 1144; https://doi.org/10.3390/nu10091144

Hourly Breast Expression to Estimate the Rate of Synthesis of Milk and Fat

1
School of Molecular Sciences, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
2
School of Population and Global Health, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
3
Centre of Applied Statistics, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
*
Author to whom correspondence should be addressed.
Received: 25 July 2018 / Revised: 9 August 2018 / Accepted: 15 August 2018 / Published: 22 August 2018
(This article belongs to the Special Issue Breastfeeding and Human Lactation)
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Abstract

Objective measurement of the rate of synthesis of breast milk and fat in breastfeeding mothers requires test-weighing of each breastfeed and the measurement of each expression from each breast over 24 h, with the collection of milk samples before and after each breastfeed and expression. We sought an abbreviated technique for measuring these rates of synthesis. Participants completed a 24-h breastfeeding milk profile, and expressed their breasts on arrival at the research room and each hour thereafter for 3 h (4 expressions). The hourly rate of milk synthesis, as measured by the yield of milk from the fourth expression, was closely related to the hourly rate of milk synthesis calculated from the 24-h milk profile. The hourly rate of fat synthesis, calculated from the fat content of small samples of the first and last milk expressed during the fourth expression, was different from the rate of fat synthesis calculated from the fat content and volumes of all the breastfeeds and expressions during the 24-h milk profile. The study confirms the use of an abbreviated technique to measure the rate of breast milk synthesis, but is not reliable as a measure of the rate of fat synthesis for an individual. View Full-Text
Keywords: human lactation; expressing; milk synthesis; fat synthesis human lactation; expressing; milk synthesis; fat synthesis
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Kent, J.C.; Gardner, H.; Lai, C.-T.; Hartmann, P.E.; Murray, K.; Rea, A.; Geddes, D.T. Hourly Breast Expression to Estimate the Rate of Synthesis of Milk and Fat. Nutrients 2018, 10, 1144.

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