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Exercise during pregnancy and risk of maternal anaemia: a randomised controlled trial
  1. R Barakat1,
  2. J R Ruiz2,
  3. A Lucia3
  1. 1
    Facultad de Ciencias de la Actividad Física y del Deporte-INEF, Universidad Politécnica de Madrid, Madrid, Spain
  2. 2
    Department of Biosciences and Nutrition at NOVUM, Unit for Preventive Nutrition, Karolinska Institutet, Huddinge, Sweden
  3. 3
    Universidad Europea de Madrid, Villaviciosa de Odón, Spain
  1. Correspondence to Dr A Lucia, Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Spain; alejandro.lucia{at}uem.es

Abstract

The purpose of this randomised controlled trial was to examine the effect of regular exercise (three times/week) performed during the second and third trimester of pregnancy on the risk of prepartum maternal anaemia (haemoglobin <11 g/dl). 160 sedentary healthy women were randomly assigned either to a training or a control group (n  =  80 each). Haematological variables were recorded at baseline (first trimester) and the beginning of the second and third trimesters. The frequency of participants with maternal anaemia was similar in the two groups over gestation (and consistently <10%). The course of haematological adaptations was normal and similar in both groups, reflecting a steady fall in haemoglobin concentration over the second trimester due to haemodilution and a rise later in gestation due to haemoconcentration. In summary, regular exercise during the second half of pregnancy does not increase the risk of maternal anaemia nor does it alter haematological variables.

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Footnotes

  • Competing interests None.

  • Ethics approval The research protocol was reviewed and approved by the ethics committee of the Hospital Severo Ochoa, Medrid, Spain and followed the ethical guidelines of the Declaration of Helsinki.

  • Patient consent Obtained.