In equine sports medicine, VO2 has been measured exclusively with stationary systems, in laboratories equipped with a treadmill. Measurement during exercise in field conditions has not previously been reported because of the lack of portable equipment designed for horses.
Equine Sports Medicine Centre and tSurgical Pathology, Equine Clinics, Faculty of Veterinary Medicine, University of Liege, Bdt.B42, Sart-Tilman, B-4000 Liege, Belgium.