| Fetal wellbeing may be compromised during strenuous exercise among pregnant elite athletes. | |
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MedLine Citation:
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PMID: 21393257 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Objectives To study fetal wellbeing and uteroplacental blood flow during strenuous treadmill running in the second trimester. Methods Six pregnant Olympic-level athletes in endurance events aged 28-37 years and training 15-22 h per week before the pregnancy were tested once at 23-29 weeks of pregnancy. The women ran three to five submaximal workloads on a treadmill with approximately 60-90% of maximal oxygen consumption. The maternal-fetal circulation was assessed with Doppler ultrasound of the uterine and umbilical arteries before, during and after exercise. Results Mean uterine artery volume blood flow was reduced to 60-80% after warming up and stayed at 40-75% of the initial value during exercise. Fetal heart rate (FHR) was within the normal range (110-160 bpm) as long as the woman exercised below 90% of maximal maternal heart rate (MHR). Fetal bradycardia and high umbilical artery pulsatility index (PI) occurred when the woman exercised more than 90% of maximal MHR and the mean uterine artery volume blood flow was less than 50% of the initial value. FHR and umbilical artery PI normalised quickly after stopping the exercise. Conclusions Exercise at intensity above 90% of maximal MHR in pregnant elite athletes may compromise fetal wellbeing. |
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Authors:
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Kjell Å Salvesen; Erlend Hem; Jorunn Sundgot-Borgen |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-10 |
Journal Detail:
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Title: British journal of sports medicine Volume: - ISSN: 1473-0480 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-3-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0432520 Medline TA: Br J Sports Med Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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National Center for Fetal Medicine, Trondheim University Hospital (St Olav's Hospital), Trondheim, Norway. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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