Document Detail

Maternal diet and exercise: effects on long-chain polyunsaturated fatty acid concentrations in breast milk.
MedLine Citation:
PMID:  15983527     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Long-chain polyunsaturated fatty acids (LC-PUFA) are essential for infant growth and development. The amount of long-chain PUFA in breast milk depends on maternal diet and body stores. Because exercise increases mobilization and utilization of fatty acids, maternal activity may also influence the amount of LC-PUFA in breast milk. OBJECTIVE: To investigate the effects of exercise on alpha-linolenic acid (LNA), linoleic acid (LA), docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA), and arachidonic acid (AA) concentrations in maternal plasma and breast milk and to determine if lactating women consume adequate amounts of LC-PUFA to compensate for those used for energy during exercise. DESIGN: LC-PUFA in plasma and breast milk were measured at 12 weeks postpartum in exercising and sedentary women. Dietary intake was recorded for 3 days. A subsample of women participated in exercise and rest sessions to examine the acute effects of exercise on breast milk LC-PUFA. RESULTS: There were no differences in dietary intake between the two groups. Mean intake (+/-standard error of the mean) of LA was 11.05+/-1.39 and 9.34+/-0.97 and LNA was 0.96+/-0.12 and 0.82+/-0.09 g/day by the sedentary and exercise groups, respectively. These amounts are close to the Adequate Intakes of LA and LNA for lactation (13 and 1.3 g/day, respectively). No differences were found in LC-PUFA in plasma and breast milk between groups. After 30 minutes of exercise, there was a trend for an increase in LA and LNA concentrations in breast milk, with no change in DHA, EPA, and AA concentrations. CONCLUSIONS: These results suggest that women consuming adequate amounts of LC-PUFA can exercise moderately without decreasing the LC-PUFA in their breast milk.
Melanie Bopp; Cheryl Lovelady; Christie Hunter; Theresa Kinsella
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the American Dietetic Association     Volume:  105     ISSN:  0002-8223     ISO Abbreviation:  J Am Diet Assoc     Publication Date:  2005 Jul 
Date Detail:
Created Date:  2005-06-28     Completed Date:  2005-09-13     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7503061     Medline TA:  J Am Diet Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1098-103     Citation Subset:  AIM; IM    
Department of Nutrition, University of North Carolina, Greensboro 27402-6170, USA.
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MeSH Terms
Case-Control Studies
Cross-Sectional Studies
Exercise / physiology*
Fatty Acids, Unsaturated / analysis*,  blood
Lactation / physiology*
Maternal Nutritional Physiological Phenomena / physiology*
Milk, Human / chemistry*
Postpartum Period
Reg. No./Substance:
0/Fatty Acids, Unsaturated
Comment In:
J Am Diet Assoc. 2005 Jul;105(7):1103-4   [PMID:  15983528 ]

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