Changes in hoof surface strain distribution in response to moderate exercise in Standardbreds.

This research investigated how moderate exercise impacts hoof wall strain distribution in Standardbred horses. The study found that both the exercised and non-exercised horse groups showed changes in hoof strain distribution over the course of the study.

Objective and methodology of the research

• This study aimed to quantify how the distribution of strain on a horse’s hoof wall changes in response to moderate exercise over time.
• The research involved 18 young adult Standardbred horses, nine of which were exercised four days per week for 30 to 45 minutes at a medium trot for four months, with the other nine serving as a non-exercised control group.
• Surface strain on the right forefoot’s hoof wall was measured using rosette strain gauges. This was done at the beginning and end of the experiment to identify any changes.

Key findings

• Both the exercise and control groups exhibited alterations in hoof strain distribution over the period of study.
• While exercise didn’t significantly change maximal midstance (msϵ1) strain, both groups exhibited changes over time relating to this measure.
• Comparisons of mean strains showed that at the start of the study, the exercised group had significantly higher values than the control group in the medial and lateral hoof quarters, but not at the toe.
• Contrarily, by the experiment’s end, the control group showed significantly higher strain values at the toe, although no statistically significant changes were found at the medial and lateral hoof quarters.

Implications and conclusions

• This research suggests that the hoof wall surface strain adjustments observed might indicate the hoof capsule’s ability to adapt to exercise. The shifts in strain may demonstrate how the horse’s hooves respond and adjust to the force exerted during regular exercise.
• The findings improve understanding of hoof adaptation to applied forces, potentially guiding the use of appropriate trimming and shoeing techniques to further enhance adaptation to exercise loads in horses.