Effects of blood donation on exercise performance in competitive cyclists

Am Heart J. 1995 Oct;130(4):838-40. doi: 10.1016/0002-8703(95)90085-3.


This study evaluated 10 male cyclists before and after phlebotomy to determine the effect of donation of 1 U of blood on exercise performance. Each subject underwent maximal exercise testing with oxygen consumption measurement at baseline, 2 hours after phlebotomy, 2 days after phlebotomy, and 7 days after phlebotomy. Maximal performance was decreased for at least 1 week. Submaximal performance was unaffected by blood donation.

MeSH terms

  • Bicycling / physiology*
  • Blood Donors*
  • Exercise / physiology*
  • Heart Rate
  • Humans
  • Male
  • Oxygen Consumption*
  • Phlebotomy