Reproducibility of a locomotor test for trotter horses.
Authors: Leleu C, Bariller F, Cotrel C, Barrey E
Journal: Veterinary journal (London, England : 1997)
Summary
# Editorial Summary: Reproducibility of a Locomotor Test for Trotter Horses Gait analysis using accelerometry offers standardised assessment of performance in harness racing, yet its reliability under field conditions requires rigorous validation. Leleu and colleagues tested eight trotters three times within a single week at controlled velocities (8.3–11.7 m/s plus maximal speed) over 20-second intervals, then assessed whether track surface influenced the measurements across five different racing surfaces. Twenty-three of twenty-five kinematic variables demonstrated excellent short-term reproducibility with no significant variation between repeated measurements, whilst the two less reproducible variables were attributable to operator technique rather than equipment limitation. Importantly, the stride variables remained consistent regardless of track surface, confirming that accelerometric testing can reliably quantify locomotor characteristics in working trotters under practical racing conditions. For practitioners involved in training, selection or veterinary assessment of harness horses, this methodology provides a dependable tool for tracking performance changes and detecting gait abnormalities without requiring laboratory facilities or track restrictions.
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Practical Takeaways
- •Accelerometric testing is a reliable, field-applicable tool for objectively assessing trotter gait that produces consistent results regardless of track conditions
- •This standardized locomotor test can be used confidently for athlete selection, training assessment, and comparison of performance across different racing venues
- •The method reduces subjective evaluation and provides quantifiable stride data to support evidence-based training and management decisions
Key Findings
- •23 of 25 accelerometric variables (92%) demonstrated very good short-term reproducibility with no significant differences across three measurements in a single week
- •Track surface did not significantly alter stride variables measured across five different tracks
- •The test was validated for field use on racetrack conditions at velocities of 8.3, 10, 11.7 m/s and maximal velocity