01/07/2021
Always a useful reminder.
COOLING HOT HORSES - THE STATE OF THE ART
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Since Atlanta 1996 we have known that using continuous application of cold water without scraping is the most effective way to cool down horses that are moderately to severely hyperthermic (re**al temperature in excess of ~40°C/104°F), especially in hot or hot/humid conditions.
The sources for this evidence are:
PEER-REVIEWED PUBLISHED PAPERS
1) Williamson, L.S., White, S., Maykuth, P., Andrews, F., Sommerdahl, C. and Green, E. Comparison between two post exercise cooling methods. Equine Vet J., 27(S18), 337-340.
https://beva.onlinelibrary.wiley.com/doi/abs/10.1111/j.2042-3306.1995.tb04948.x
2) Marlin, D. J., Scott, C. M., Roberts, C. A., Casas, I., Holah, G., & Schroter, R. C. (1998). Post exercise changes in compartmental body temperature accompanying intermittent cold water cooling in the hyperthermic horse. Equine veterinary journal, 30(1), 28–34.
https://pubmed.ncbi.nlm.nih.gov/9458396/
3) Kohn, C.W., Hinchcliff, K.W. and McKeever, K.H. (1999) Evaluation of washing with cold water to facilitate heat dissipation in horses exercised in hot, humid conditions. American Journal of Veterinary Research, 01 Mar 1999, 60(3):299-305. https://pubmed.ncbi.nlm.nih.gov/10188810/
4) Takahashi, Y., Ohmura, H., Mukai, K., Shiose, T., & Takahashi, T. (2020). A Comparison of Five Cooling Methods in Hot and Humid Environments in Thoroughbred Horses. Journal of equine veterinary science, 91, 103130.
https://pubmed.ncbi.nlm.nih.gov/32684268/
5) Kang, H., Zsoldos, R.R., Skinner, J.E., Gaughan, J.B. and Guitart, A.S. (2021) Comparison of post-exercise cooling methods in horses. Journal of Equine Veterinary Science 100 (2021) 103485
https://doi.org/10.1016/j.jevs.2021.103485
DATA COLLECTED & ANALYSED AT
a) Atlanta 1995 Olympic Test Event
b) Atlanta 1996 Olympics
c) Athens 2003 Olympic Test Event
d) Athens 2004 Olympics
e) Beijing 2007 Olympic Test Event
f) Beijing 2008 Olympics
g) Tryon 2018 World Equestrian Games
h) Tokyo 2019 Olympic Test Event
Cooling hot horses with cold water DOES NOT
1) cause muscle damage
2) cause laminitis
3) induce shock
4) give horses heart attacks
5) prevent them from cooling by constriction of skin blood flow
Water left on horses DOES NOT
1) insulate and prevent heat loss
2) cause them to overheat
It is NOT MORE EFFECTIVE TO
1) start at the feet and work up
2) scrape water off whilst cooling (it causes them to warm up)
3) focus on large blood vessels
4) cover the horse with wet towels
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