Key result
Nonexhaustive maternal exercise does not alter uterine artery blood flow ratios in healthy pregnancies.
Why the study?
Does continuous graded exercise alter uterine artery blood flow in healthy pregnant women?
Observational (n=11)
Does continuous graded exercise alter uterine artery blood flow in healthy pregnant women?
Nonexhaustive maternal exercise does not appear to compromise uterine artery blood flow in healthy, low-risk pregnant subjects.
Nonexhaustive cycling may not compromise uterine flow in healthy pregnancy; leaves open effects in higher-risk groups or at exhaustive intensities.
Eleven healthy women with singleton pregnancies between 16 and 28 weeks gestation were continuously exercised, in a graded fashion, by stationary bicycle to a predetermined target heart rate. Before and within 3 minutes after exercise, uterine artery waveforms were identified from a semirecumbent position using a 3.5 MHz continuous-wave Doppler transducer coupled to an Angioscan spectrum analyzer. The ratio of peak systolic to end-diastolic frequency (A/B ratio) was utilized to assess qualitative differences in flow before and after exercise. No statistically significant changes in A/B ratios were noted. This study suggests that nonexhaustive maternal exercise does not compromise uterine artery blood flow in healthy, low-risk pregnant subjects.
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Moore et al. (1988) conducted an observational in Healthy singleton pregnancies (n=11). Graded exercise by stationary bicycle vs. Before exercise (baseline) was evaluated on Ratio of peak systolic to end-diastolic frequency (A/B ratio) of uterine artery waveforms. Nonexhaustive maternal exercise by stationary bicycle did not result in statistically significant changes in uterine artery blood flow A/B ratios in healthy pregnant subjects.
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