Document Detail


Nutritional influences on maternal autonomic function during pregnancy.
MedLine Citation:
PMID:  19370040     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Laura E Caulfield; Nelly Zavaleta; Ping Chen; Mario Merialdi; Janet A Dipietro
Publication Detail:
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:
Title:  Applied physiology, nutrition, and metabolism = Physiologie appliquée, nutrition et métabolisme     Volume:  34     ISSN:  1715-5312     ISO Abbreviation:  -     Publication Date:  2009 Apr 
Date Detail:
Created Date:  2009-04-16     Completed Date:  2009-06-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101264333     Medline TA:  Appl Physiol Nutr Metab     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  107-14     Citation Subset:  IM    
Affiliation:
Center for Human Nutrition, Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, MD 21205, USA. lcaulfie@jhsph.edu
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MeSH Terms
Descriptor/Qualifier:
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:
0/Hemoglobins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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