An accelerometric measure of the gait pattern in horses after the administration of sublingual detomidine.

The research investigated how administering detomidine gel sublingually (under the tongue) to horses impacted their walking or gait patterns, using a method called accelerometry. Significant changes were observed in several gait parameters following the use of detomidine gel, apart from stride length.

Research Methodology

• The study employed a randomized two-way crossover design, involving a total of six horses. In this type of study, each animal receives both the experimental treatment (sublingual detomidine gel) and a placebo, randomly. This design is often used to mitigate any potential effects that may bias the results.
• The researchers used a triaxial accelerometric device to analyze the movement of the horses. This device measures acceleration on three axes (forward-backward, up-down, and side-to-side), allowing for a multi-dimensional assessment of the horses’ gait.
• Measurements were taken 15 minutes prior to the administration of either the detomidine gel or the placebo, serving as a baseline. Subsequent measurements were then taken every 10 minutes after each treatment was given, for a total period of 180 minutes.

Parameters and Results

• Eight specific gait parameters were assessed, these were speed, stride frequency, stride length, regularity of the gait, dorsoventral (up-down) forces during gait, propulsion, mediolateral (side-to-side) movements, and total power exerted during motion.
• Acceleration forces and three components of power during movement were also calculated.
• Results showed that there were significant differences in all parameters between the horses who received detomidine gel and those who received a placebo, with the exception of stride length.
• Most of the significant changes in gait occurred between 30 to 70 minutes after the administration of the detomidine, and these effects lasted up to 160 minutes post-drug administration.

Conclusion

• The researchers concluded that sublingual administration of detomidine gel is useful in scenarios where prolonged sedation in horses is required, particularly if maintaining stability is a major concern.
• By examining the changes in gait patterns through an accelerometric method, the study provides valuable insights into the impacts of detomidine on horse locomotion.