Stride characteristics of horses competing in Grand Prix jumping.

This research paper studies the stride characteristics of horses during a Grand Prix competition. It examines how horses approach and jump over obstacles, comparing their stride timings and distances, and examining the differences in how the leading and non-leading limbs are used during the jump.

Study Setup

In this study:

• 17 horses participated in a Grand Prix competition where their strides were examined while jumping over two obstacles: a picket fence and rail 1.3 meters high, and a coop and rail 1.52 meters high.
• The stride characteristics were captured using high-speed cameras and analyzed with the help of computer-aided technology.

Measurement Extraction and Analysis

The research incorporated:

• 22 timing measurements and 13 distance measurements from each horse’s performance.
• These measurements were further used to compare how each horse approached and cleared the obstacles, focusing on the leading and non-leading legs and their respective thoracic and pelvic limbs.
• Statistical methods, including paired t-tests and stepwise regression analysis, were employed to compare means and observe patterns in the data.

Results and Observations

The study found that:

• There were no significant differences in stride timing and distance measurements between the two fences.
• Horses tended to use a moderately fast canter as they approached the fences, placing their non-leading thoracic limb earlier and farther from the fence than their leading limb.
• The stance phase of the non-leading leg lasted longer than that of the leading leg.
• The lead and non-lead pelvic limbs acted more synchronously than the thoracic limbs, with no significant differences found in their time of placement, stance phase duration or position from the fence.
• There was a greater overlap in the stance phases of the pelvic limbs as compared to the thoracic limbs.