Relationship of body condition score to completion rate during 160 km endurance races.

The research discusses the impact of body condition scores on the completion rates of horses in endurance races. The study reveals that the physical condition of the horse is more critical to performance than the weight or weight ratio of the rider.

Research Methodology

• The study involved 360 horses, aged between 5-22 years, with body condition scores ranging from 1.5 to 5.5, as per a scale described by Henneke in 1985.
• The horses participated in a 160 km endurance race in either August 1995 or July 1996, over the same course.
• Characteristics such as the horse’s condition score, cannon bone circumference, combined rider and tack weight, heart girth, and body length were measured 11-18 hours prior to the start of the race.
• The body weight of the horses was estimated accordingly using a formula by Carroll and Huntington (1988).
• A ratio was also developed between the rider’s weight and horse’s body weight.

Findings and Conclusions

• The weight of the rider and the rider-horse weight ratio showed no significant effect on the overall completion rates of the horses (P > 0.05).
• For horses that successfully completed the race, the rider weight and the rider weight ratio did not impact the finish time nor the placing (P > 0.05).
• For horses that were removed from the race, the rider weight and weight ratio demonstrated no effect on the number of miles covered before failure (P > 0.05).
• Body condition scores significantly affected the completion rate (P < 0.001). For each increment of 1 in the condition score, the distance successfully completed increased by 31.81 km (or around 19.88 miles).
• Among unsuccessful horses, there was a substantial difference in condition score between those failed due to metabolic issues and non-metabolic issues (P < 0.001).
• The study concludes that the physical condition of the horse is a more important factor in endurance performance than previously believed, more so than the weight of the rider or the weight ratio between rider and horse.