Combined influence of expertise and fatigue on riding strategy and horse–rider coupling during the time course of endurance races.
Authors: Viry S, De Graaf J B, Frances J-P, Berton E, Laurent M, Nicol C
Journal: Equine veterinary journal
Summary
# Editorial Summary Elite endurance horse–rider partnerships demonstrate markedly different biomechanical strategies than advanced competitors, with expertise appearing to drive tactical decisions that evolve throughout long-distance races. Using synchronised accelerometers placed on the centres of mass of both horse and rider, researchers monitored five elite and five advanced dyads competing in CEI*/CEI** endurance races, analysing vertical displacement patterns to quantify gait selection, riding technique (sitting versus two-point), and the relative phase (synchronisation) between horse and rider movements. Whilst advanced riders maintained consistent speed and gait distributions throughout the race, elite dyads exhibited superior initial horse–rider coupling (higher relative phase values, P<0.01) and progressively increased their proportion of sitting canter from mid-race onwards, correlating with significant increases in speed (P<0.001) and rider heart rate (P<0.01). Whether these biomechanical differences reflect superior fatigue management, deliberate pacing strategy, or both remains unclear, though the findings suggest that competitive advantage in endurance racing is not simply a matter of fitness but involves sophisticated real-time adjustment of riding technique. For practitioners supporting endurance competitors, these results highlight the value of movement analysis in identifying whether a rider is optimally coupling with their horse across varying race phases, potentially revealing opportunities to refine technique or assess fatigue onset before performance deteriorates.
Read the full abstract on PubMed
Practical Takeaways
- •Elite endurance riders strategically adjust gait and riding position (increasing sitting canter) during races to maintain or increase speed despite fatigue, whereas less experienced riders maintain consistent but potentially suboptimal strategies
- •Changes in horse-rider coupling quality (relative phase variability) during specific gaits may serve as an objective marker of fatigue progression in endurance competition
- •Training should emphasize adaptive riding strategies and technique versatility, as the ability to modify approach mid-race distinguishes elite from advanced performers
Key Findings
- •Elite horse-rider dyads showed higher relative phase values initially (P<0.01) and progressively increased sitting canter proportion from mid-race onwards with associated speed increases (P<0.001)
- •Advanced dyads maintained stable speed, gait proportions, and biomechanical coupling throughout races, whereas elite dyads adapted their strategy over time
- •Both groups demonstrated increased intradyad relative phase variability in 2-point canter (P<0.01), suggesting fatigue-related changes in coupling quality
- •Accelerometer-based analysis of vertical displacement can quantify riding technique adoption and horse-rider biomechanical coupling patterns during endurance competition