Aerobic Exercise During Pregnancy Influences Fetal Cardiac Autonomic Control of Heart Rate and Heart Rate Variability
Document Type
Article
Publication Title
Early Human Development
Abstract
Background: Previous studies using ultrasound technology showed that fetal heart rate (HR) may be responsive to maternal aerobic exercise. Although it is recognized that cardiac autonomic control may be influenced by the intrauterine environment, little is known about how maternal exercise affects fetal heart development.
Aims: This study tested the hypothesis that regular maternal exercise throughout gestation influences fetal cardiac autonomic control of HR and heart rate variability (HRV) when compared to fetuses of non-exercising women.
Study design: Magnetocardiograms (MCGs) were recorded using a dedicated fetal biomagnetometer at 28, 32 and 36 weeks gestational age (GA) from 26 regularly exercising (>30 min of aerobic exercise, 3x per week) and 35 healthy, non-exercising pregnant women. Fetal MCG was isolated and normal R-peaks were marked to derive fetal HR and HRV in the time and frequency domains. We applied a mixed-effects model to investigate the effects of exercise, GA and fetal activity state.
Results: At 36 weeks GA, during the active fetal state, fetal HR was significantly lower in the exercise group (p=
Conclusion: These results indicate that regular maternal exercise throughout gestation results in significantly lower fetal HR and increased HRV.
DOI
10.1016/j.earlhumdev.2010.03.002
Publication Date
4-2010
ISSN
1872-6232
Recommended Citation
May LE, Glaros A, Yeh H, Clapp JF, Gustafson KM. Aerobic Exercise During Pregnancy Influences Fetal Cardiac Autonomic Control of Heart Rate and Heart Rate Variability. Early Human Development. 2010; 86(4). doi: 10.1016/j.earlhumdev.2010.03.002.
