Ground Reaction Forces of Dressage Horses Performing the Piaffe.
Authors: Clayton Hilary Mary, Hobbs Sarah Jane
Journal: Animals : an open access journal from MDPI
Summary
# Editorial Summary: Ground Reaction Forces in the Piaffe Clayton and Hobbs investigated an understudied aspect of high-level dressage by quantifying three-dimensional ground reaction forces (GRFs) during the piaffe using in-ground force plates on seven well-trained horses. The forelimbs experienced significantly greater peak vertical loading than the hindlimbs (7.39 versus 6.41 N/kg), whilst braking and propulsive forces remained balanced between front and back legs, suggesting that the movement's characteristic elevated, cadenced action places disproportionate vertical demand on the forehand. Notably, transverse forces in the hindlimbs were comparable in magnitude to longitudinal forces and predominantly directed medially, reflecting the complex lateral stabilisation required during this diagonal movement—a finding underscored by substantial step-to-step variability (coefficient of variation 25–68%) in horizontal force components. This high variability likely reflects the inherent biomechanical challenge of maintaining a diagonal stance with minimal forward momentum, distinguishing the piaffe from other dressage gaits. For practitioners, these findings highlight that piaffe training places specific foreleg loading demands requiring careful conditioning progression, whilst the movement's lateral instability may warrant particular attention to hindlimb strength and proprioceptive training to maintain soundness at upper levels.
Read the full abstract on PubMed
Practical Takeaways
- •Piaffe places greater vertical loading on the forelimbs than hindlimbs, which may inform training progression and monitoring for forelimb overload injuries in high-level dressage horses
- •The high step-to-step variability in horizontal forces suggests this movement requires significant neuromuscular control and proprioceptive balance—poor performance may indicate pain, fatigue, or training insufficiency rather than fundamental unsoundness
- •The absence of forward momentum in piaffe creates unique biomechanical demands compared to other diagonal gaits; farriers and vets should recognize this as a distinct loading pattern when evaluating movement quality or troubleshooting performance issues
Key Findings
- •Peak vertical ground reaction force was significantly higher in forelimbs than hindlimbs (7.39 ± 0.99 N/kg vs. 6.41 ± 0.64 N/kg; p < 0.001) during piaffe
- •Peak longitudinal forces were small with no difference in magnitude between fore and hindlimbs, indicating balanced braking and propulsive forces
- •Peak transverse forces were similar to longitudinal forces and predominantly medial in hindlimbs, reflecting the diagonal coordination of the movement
- •High step-to-step variability in horizontal ground reaction force components (coefficient of variation 25-68%) reflects the challenge of balancing on one diagonal pair of limbs without forward momentum