Influence of Functional Rider and Horse Asymmetries on Saddle Force Distribution During Stance and in Sitting Trot.
Authors: Gunst Silja, Dittmann Marie T, Arpagaus Samuel, Roepstorff Christoffer, Latif Selma N, Klaassen Bart, Pauli Carole A, Bauer Christoph M, Weishaupt Michael A
Journal: Journal of equine veterinary science
Summary
# Editorial Summary Asymmetrical saddle pressure patterns are commonly attributed to poor saddle fit, yet the relative contributions of horse conformation, horse movement, rider posture, and rider asymmetry remain poorly characterised—a knowledge gap this 2019 study addressed by simultaneously analysing saddle pressure mapping and motion capture data across 80 horse-rider pairs at halt and sitting trot. Both rider and horse variables showed statistically significant relationships with asymmetric force distribution (P < .001); notably, hip collapse in the rider increased contralateral (opposite-side) loading, whilst upper body tilt produced ipsilateral (same-side) pressure shifts. The substantial variation observed between individual pairs underscores a critical finding: because horse movement and rider position cannot be isolated during ridden work, interpreting pressure mat images remains inherently complex and demands systematic assessment of saddle fit, rider biomechanics, and equine conformation in combination. For practitioners using pressure mapping diagnostically—whether farriers adjusting for postural compensation patterns, physiotherapists addressing rider asymmetry, or saddle fitters troubleshooting fit issues—this research reinforces that asymmetrical loading cannot be reflexively blamed on equipment alone, and that addressing the rider's functional asymmetries may prove as important as saddle adjustment in achieving balanced force distribution.
Read the full abstract on PubMed
Practical Takeaways
- •Asymmetric saddle pressure patterns cannot be attributed to saddle fit alone—evaluate rider posture and horse conformation/movement as contributing factors
- •Correcting rider position (hip stability, upper body alignment) may reduce asymmetric loading on the horse's back independent of saddle changes
- •Comprehensive assessment of horse-rider interaction (not just saddle evaluation) is necessary to address asymmetric force distribution and optimize equine health
Key Findings
- •Both rider and horse variables significantly influenced asymmetric saddle force distribution (P < 0.001) during stance and sitting trot
- •Rider hip collapse increased contralateral force on the saddle pressure mat
- •Rider upper body tilt toward one side produced increased force on the same side of the pressure mat
- •Horse movement, conformation, and rider posture all contributed independently to asymmetric force distribution patterns