| Nutritional influences on maternal autonomic function during pregnancy. | |
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MedLine Citation:
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PMID: 19370040 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The objective of this study was to identify influences on longitudinal changes in autonomic function during pregnancy. We studied 195 low-income Peruvian women who were subjects in a randomized controlled trial of zinc supplementation and fetal neurobehavioral development. Maternal cardiorespiratory status and electrodermal activity were assessed at 20, 24, 28, 32, 36, and 38 weeks' gestation over a 50-min session. At baseline (10-16 weeks), and at 28 and 36 weeks' gestation, mass and height, arm and calf circumferences, and skinfold thicknesses were assessed, and blood was taken to measure hemoglobin, hematocrit, and plasma zinc concentration. Measures of heart period (HP), respiratory period (RP), respiratory sinus arrhythmia (RSA), skin conductance level (SCL), and mean arterial pressure (MAP) were analyzed using longitudinal models. Having a hemoglobin concentration <10.5 g.dL-1 at 28 weeks was associated with shorter HP and RP and lower RSA, and change in hemoglobin from baseline to 36 weeks was associated with decreased SCL. Further, 3 measures were associated with variation in fat or fat-free mass in the calf; RSA was negatively associated with changes in calf muscle area over pregnancy, while changes in calf fat area were positively associated with MAP and SCL. Variability in autonomic function during the second half of pregnancy is associated with hematologic status and changes in lower limb body composition across pregnancy. |
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Authors:
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Laura E Caulfield; Nelly Zavaleta; Ping Chen; Mario Merialdi; Janet A Dipietro |
Publication Detail:
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Type: Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Applied physiology, nutrition, and metabolism = Physiologie appliquée, nutrition et métabolisme Volume: 34 ISSN: 1715-5312 ISO Abbreviation: - Publication Date: 2009 Apr |
Date Detail:
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Created Date: 2009-04-16 Completed Date: 2009-06-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101264333 Medline TA: Appl Physiol Nutr Metab Country: Canada |
Other Details:
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Languages: eng Pagination: 107-14 Citation Subset: IM |
Affiliation:
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Center for Human Nutrition, Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, MD 21205, USA. lcaulfie@jhsph.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological Adult Autonomic Nervous System / physiology* Blood Pressure Body Composition Cardiovascular System / innervation* Double-Blind Method Female Galvanic Skin Response Gestational Age Heart Rate Hemoglobins / metabolism Humans Leg Maternal Nutritional Physiological Phenomena* Peru Pregnancy Respiratory Mechanics Young Adult |
| Chemical | |
Reg. No./Substance:
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0/Hemoglobins |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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