Document Detail

The effects of maternal exercise on fetal heart rate and movement patterns.
MedLine Citation:
PMID:  9154415     Owner:  NLM     Status:  MEDLINE    
The aim of this study was to investigate the effects of maternal exercise on fetal movement and heart rate patterns. Twelve healthy women at 29-32 weeks of pregnancy performed a (sub)maximal bicycle exercise test, reaching 53-99% (median 82%) of their maximal increase in heart rate (MIHR). Fetal heart rate (FHR) and its variation and fetal body and breathing movements were recorded for 1 h before and after the exercise and also on a control day. After exercise, FHR was higher for 30 min and FHR variation reduced for 20 min as compared with pre-exercise levels (P < 0.01). Fetal body movements were reduced for the first 5 min following exercise (P < 0.05). In two cases, fetal bradycardia was observed (at 89 and 99% MIHR) followed by a considerable reduction in FHR variation and absence of body and breathing movements for 20 min. In the other 10 fetuses fetal breathing activity was increased for the first 5 min after exercise (P < 0.05). FHR (and to a lesser extent breathing movements) increased with increasing level of maternal exercise, but decreased when the % MIHR exceeded approximately 90%. Body movements were negatively correlated with the % MIHR (P < 0.05). In conclusion, moderate to heavy maternal exercise clearly affects the human fetus with signs of transient fetal impairment after heavy exercise.
M A Manders; G J Sonder; E J Mulder; G H Visser
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Early human development     Volume:  48     ISSN:  0378-3782     ISO Abbreviation:  Early Hum. Dev.     Publication Date:  1997 May 
Date Detail:
Created Date:  1997-07-17     Completed Date:  1997-07-17     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7708381     Medline TA:  Early Hum Dev     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  237-47     Citation Subset:  IM    
Department of Obstetrics and Gynaecology, University Hospital, Utrecht, The Netherlands.
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MeSH Terms
Exercise / physiology*
Exercise Test
Fetal Monitoring
Fetal Movement / physiology*
Fetus / physiology*
Heart Rate, Fetal / physiology*
Pregnancy / physiology*
Pregnancy Trimester, Third
Respiration / physiology
Time Factors
Ultrasonography, Doppler
Ultrasonography, Prenatal
Videotape Recording

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

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