Kinematics of saddle and rider in high-level dressage horses performing collected walk on a treadmill.
Authors: Byström A, Rhodin M, von Peinen K, Weishaupt M A, Roepstorff L
Journal: Equine veterinary journal
Summary
# Editorial Summary High-level dressage depends on precise biomechanical communication between horse and rider, yet the detailed three-dimensional movements of saddle and rider during collected walk—the gait most sensitive to rider influence—had remained largely undocumented. Byström and colleagues used motion-capture analysis to track saddle position and rider kinematics (pelvis, trunk, head, limbs) in seven elite dressage pairs performing collected walk on a treadmill, applying rigid body modelling to quantify movement patterns in multiple planes. Their findings revealed a coordinated oscillation: during the first half of each hindlimb stance phase, the saddle rotates cranially (front dropping relative to back) whilst the rider's pelvis rotates caudally in the opposite direction, with the seat moving forwards as the head and feet move backwards; these movements reverse during the second half of stance, creating a rhythmic counterbalance that appears fundamental to maintaining collected walk. Since walk is the gait where rider influence is strongest, understanding this normal movement pattern provides a reference point for assessing problem horses—deviations from this coordinated saddle-rider motion may indicate biomechanical dysfunction warranting intervention by farriers, physiotherapists, or trainers. For practitioners evaluating horses with performance issues or gait abnormalities, assessing walk mechanics in relation to these established patterns offers a more objective basis for identifying whether the problem originates with the horse's conformation, the rider's position, saddle fit, or their interaction.
Read the full abstract on PubMed
Practical Takeaways
- •Understanding that rider and saddle move in coordinated patterns with the horse's gait can help identify asymmetrical or problematic rider-horse interactions
- •If assessing horses with unsatisfactory dressage performance, detailed evaluation at walk provides the clearest window into rider influence and seat effectiveness
- •Well-performing dressage riders demonstrate specific synchronized movement patterns with their saddle and horse; deviations from this pattern may indicate training or biomechanical issues worth investigating
Key Findings
- •During the first half of hindlimb stance, the saddle rotates cranially (front lowered) while the rider's pelvis rotates caudally in opposite direction
- •The rider's seat moves forwards while the rider's neck and feet move backwards during early hindlimb stance, with movements reversed in the second half
- •Saddle and rider movements in high-level dressage horses follow a consistent pattern clearly related to horse movement in multiple planes
- •Rider influence on horse movement pattern is strongest at walk, making walk assessment most valuable for evaluating poor performance