The work is then repeated, again followed by the work relief interval. These intervals are repeated until the horse reaches fatigue which is signified by a heart rate that remains elevated above 100 beats per minute for more than two minutes into the work relief interval. Some horsemen may be able to sense that fatigue endpoint, but a heart rate monitor is extremely beneficial under most circumstances. In conclusion, horses trained with an understanding of exercise physiology will not likely shatter world records. Secretariat's dominating performance in the Belmont Stakes is probably not in jeopardy.
Training is only one part to the performance puzzle.
Genetics, nutrition and environment from birth all play a key role in the final outcome of any horse. It is however a reasonable expectation that more horses can have a productive sound performance career that brings joy to the owner and spectator alike if some basic principles are adhered to. Don R. Topliff, Ph.D. PAS, Dipl. ACAN, is an Assistant Professor at Oklahoma State University. He conducts research and instructs classes on equine nutrition and physiology.