Basic kinematics of the saddle and rider in high-level dressage horses trotting 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 demands exceptional synchronisation between horse, saddle and rider, yet the biomechanics of this interaction have remained poorly characterised in scientific literature. Byström and colleagues used three-dimensional kinematic analysis on seven elite dressage horses and riders performing collected trot on a treadmill, tracking saddle position and rider body segments using rigid body modelling to identify consistent movement patterns across the group. During the stance phase of each diagonal, the saddle pitched anti-clockwise whilst the rider's pelvis pitched clockwise and the lumbar spine extended; these rotations reversed during suspension and the latter part of stance, with roll and yaw movements changing direction only at diagonal contact. These findings demonstrate that successful dressage partnerships exhibit remarkably consistent saddle-rider-horse movement relationships, suggesting that saddle fit and rider position are not static but must accommodate dynamic three-plane rotations occurring throughout the stride cycle. Understanding these biomechanical patterns has direct relevance for farriers, physiotherapists and coaches seeking to optimise performance whilst reducing orthopaedic injury risk, and provides a quantitative framework for evaluating whether deviations from this common pattern might indicate problems with saddle fit, rider position, or underlying lameness.
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Practical Takeaways
- •Understanding normal saddle and rider movement patterns can help identify abnormal movement caused by poor fit, injury, or asymmetry in your horses
- •Rider position and pelvis control directly influence saddle movement and load distribution, making proper riding technique biomechanically important for horse welfare
- •The biphasic pattern of saddle pitch rotation suggests load is dynamically distributed throughout the stride; saddle fit and padding should accommodate these changing pressure points
Key Findings
- •Saddle and rider movements follow a consistent biphasic pattern during collected trot, with pitch rotations reversing between stance and suspension phases
- •During first half of stance phase, saddle rotates anti-clockwise and rider pelvis rotates clockwise (viewed from right) with lumbar extension
- •Roll and yaw rotations of saddle and core rider segments change direction only at diagonal footfall contact
- •Saddle movements are influenced by both horse movement and rider positioning, suggesting interactive biomechanical coupling