Document Detail

Thermal response to submaximal exercise before, during and after pregnancy: a longitudinal study.
MedLine Citation:
PMID:  12820836     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Heat stress in early pregnancy is known to have a teratogenic effect. Exercise produces excess heat and during pregnancy might therefore present a theoretical risk of malformations. Our aim was to assess the thermal response to exercise of healthy pregnant women in a longitudinal study. METHODS: Fourteen women were examined before pregnancy, and followed five times during, and twice after pregnancy, using a submaximal bicycle test with a target heart rate of 85% of the predicted age-adjusted maximum. The main aim was to present reference values. RESULTS: The temperature at submaximal work load declined continuously from preconception to postpartum levels (37.8 degrees C vs. 36.9 degrees C, p = 0.04). The difference between peak and basal core temperature fell from 0.6 degrees C to 0.05 degrees C at 29 and 36 weeks of gestation, reaching preconception levels at 24 weeks after delivery (0.8 degrees C lower). CONCLUSION: During submaximal exercise the temperature response seemed to provide thermal protection for the embryo and the fetus.
P G Lindqvist; K Marsal; J Merlo; J P Pirhonen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians     Volume:  13     ISSN:  1476-7058     ISO Abbreviation:  J. Matern. Fetal. Neonatal. Med.     Publication Date:  2003 Mar 
Date Detail:
Created Date:  2003-06-24     Completed Date:  2003-07-23     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  101136916     Medline TA:  J Matern Fetal Neonatal Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  152-6     Citation Subset:  IM    
Department of Obstetrics and Gynecology, Lund University, University Hospital, Malmö, Sweden.
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MeSH Terms
Body Temperature
Body Temperature Regulation / physiology*
Exercise / physiology*
Exercise Test
Gestational Age
Hot Temperature
Longitudinal Studies
Postpartum Period
Pregnancy / physiology*
Reference Values

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