Physical fitness in pregnancy: its effect on pregnancy outcome.

@article{Pomerance1974PhysicalFI,
  title={Physical fitness in pregnancy: its effect on pregnancy outcome.},
  author={Jeffrey J Pomerance and Louis Gluck and V A Lynch},
  journal={American journal of obstetrics and gynecology},
  year={1974},
  volume={119 7},
  pages={867-76}
}