Article Text

Heart rate, blood biochemistry and performance of horses competing in a 100 km endurance ride
  1. MM Sloet van Oldruitenborgh-Oosterbaan,
  2. T Wensing,
  3. A Barneveld and
  4. HJ Breukink
  1. Department of Large Animal Medicine and Nutrition, Veterinary Faculty, Utrecht, The Netherlands.


To determine whether a clinical examination was adequate to assess the fitness of horses in an endurance ride, and to characterise the relationship between a clinical assessment of the horse's fitness and its blood biochemistry, 23 horses were monitored before, during and after an 87 to 100 km endurance ride. Blood samples were taken before the ride, at three checkpoints on the ride, immediately after the ride and one day later for the determination of packed cell volume, total protein, lactate, glucose, non-esterified fatty acids, creatine phosphokinase, aspartate aminotransferase and plasma electrolytes. Heart rate measurements appeared to be a reliable indicator of the metabolic status of endurance horses suggesting that veterinary examinations according to the official Federation Equestre Internationale rules are adequate to protect the health and welfare of horses competing in endurance races.

Statistics from

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.