06/20/2025
What asymmetries can you spot?
Article: Influence of functional rider and horse asymmetries on saddle force distribution during stance and in sitting trot.
🟢General findings from the study, during sitting trot:
• Collapsing the hip shifted pressure to the opposite side of the horse’s back
• Tilting the torso shifted pressure to the same side as the tilt
BUT HERE’S THE CATCH…
While these patterns were statistically significant, the actual correlation values were low.
💡 Quick Stats Refresher:
Statistical significance = we’re confident a relationship exists
Correlation = how strongly that relationship shows up
So what? Yes, the patterns were real, but they weren’t super strong across all riders.
Other factors the study didn’t measure—but might matter:
🔸 Rider asymmetries (pelvic rotation, scoliosis, old injuries)
🔸 Horse asymmetries (muscle imbalance, conformation)
🔸 Everyone mounted from the left—and guess what? The left side had more force.
🔸 Direction of movement (left vs. right rein)
🔸 Low-grade lameness so subtle it was unobservable (therefore not rejected from the study)
Author’s Takeaways:
✔️ Hip collapse and torso tilt do contribute to asymmetrical loading of the horses back, left vs right
✔️ Horse-rider-pair may compensate for each other’s asymmetries
✔️ A poorly fitted, or asymmetric, saddle may not be the sole reason for an asymmetric loading pattern on the horse’s back
My Takeaways:
🌿 Rider asymmetry does create uneven force—but it’s complex.
🌿 No single posture issue works in isolation, so addressing the tilt without the underlying reason for the tilt is a short term approach
🌿 That odd sweat patch on your saddle pad? It might not just be the saddle’s fault.
Citation:
Gunst, S., Dittmann, M. T., Arpagaus, S., Roepstorff, C., Latif, S. N., Klaassen, B., Pauli, C. A., Bauer, C. M., & Weishaupt, M. A. (2019). Influence of functional rider and horse asymmetries on saddle force distribution during stance and in sitting trot. Journal of Equine Veterinary Science, 78, 20–28.
https://doi.org/10.1016/j.jevs.2019.03.215