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[Sports during pregnancy].

F K Lotgering1

  • 1Erasmus Universiteit Rotterdam, Instituut voor Obstetrie en Gynaecologie.

Tijdschrift Voor Kindergeneeskunde
|August 1, 1990
PubMed
Summary

Physical exercise during pregnancy does not harm the fetus, though maximal exercise capacity decreases due to increased body weight. Uterine blood flow is reduced during exercise but oxygen supply to the fetus is maintained.

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Area of Science:

  • Physiology
  • Sports Medicine
  • Obstetrics

Context:

  • Pregnancy significantly alters maternal physiology.
  • Understanding the impact of physical activity during gestation is crucial for maternal and fetal well-being.
  • Existing research provides insights into exercise adaptations during pregnancy.

Purpose:

  • To investigate the reciprocal effects of physical exercise and pregnancy.
  • To analyze physiological changes in pregnant individuals during exercise.
  • To assess the safety and impact of exercise on fetal well-being.

Summary:

  • Pregnancy increases resting metabolism but does not significantly alter maximal oxygen uptake for exercise.
  • While exercise capacity (in Watts) remains unchanged, increased body weight reduces maximal running speed and distance.
  • Exercise leads to a ~25% reduction in uterine blood flow, compensated by hemoconcentration, blood flow redistribution, and increased oxygen extraction to maintain fetal oxygenation.
  • No evidence suggests exercise causes abortion, hypoxia, or growth retardation in fetuses during normal pregnancy.

Impact:

  • Physical exercise is generally safe during normal pregnancy.
  • Caution is advised for pregnant individuals with complications like pregnancy-induced hypertension or premature contractions.
  • This research informs guidelines for exercise prescription in pregnant populations.

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