J. Ashton Moore Collaborations

J. Ashton Moore Collaborations Julia Benz works with Jeff Moore on dressage theory creating video for your viewing and discussion.
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01/17/2026

This reel took a long time to create with many starts, stops, and question on how much information could be covered in a “reasonable” format here.

As I was told by J. Ashton Moore , that he, Elizabeth Searle, and Peter Lert (look them up) made sure that the USEF rules correctly defined passage as it was passed on to them from the Calvary instructors in the early days of the California Dressage Society and from their own visual observations. So I have this information from the “horse’s mouth.” The reason the USEF includes language regarding the phase of support is becase J. Ashton Moore and his peers Liz and Peter fought to include correct wording in the definition for USEF. Things that were ubiquitously known in equestrian sport, things that were common knowledge, have been lost and continue to be lost in real time. We strive to keep knowledge alive.

I invite anyone with the inclination to time the phase of support and compare it between different horses and between different eras. I don’t claim perfection in my measurements but I did find the support phase longer in the historic video in comparison to modern horses. Maybe someone out there has better equipment or technique for measuring. I encourage everyone to repeat the measurements and see if you find the same results.

Also it is amazing what you see when you slow down the riding videos. Later it helps you see what is happening in real time. Slowing the videos down helps train your eye to detect artificiality among many other things. Then in real time you can see the “thing”.

The modern passage examples in this reel prioritize the phase of support, are mostly symmetrical, and the hooves move forward smoothly in an arc to land. They lack double dipping, jerky movement, or side to side movement.

Lifelong learning.







12/19/2025

Disclaimer: I have borrowed quite a few books from Jeff’s library at Osierlea which I refer to weekly and they were used to make this reel. Jeff did not review the reel I am posting below. Granted we have talked adnauseum about this issue. Folks want to share this reel and it is shareable off this page.

I made a video showing historical outlines of young horses using books with illustrations or photos. I contrasted these images with an internet search for “4 year old dressage horse” and took screen shots in order of appearance. Not surprisingly there were hundreds to contrast against.

There is an imagery problem with the current dressage world which is overwhelmed by incorrect outlines.

Readers on this page in particular are educated on what a correct outline looks like. So many more don’t know. What has become normalized to a large number of equestrians is anathema to older equestrians.

My questions for those who ride behind the vertical: Are they just uneducated? Are they afraid to let go of the reins for fear of the horse running off? Are they balancing off the reins? Does dressage just need a flood of correct imagery to train the eyes? Are judges and the top trainers who “dictate” the winners to blame?

Lead by example I say. Since a course correction isn’t coming from the top it’s going to have to come from the bottom up.

On Justin Verboomen.  Carl Hester has said, “He’s exactly what the sport needs to keep moving in the right direction…His...
11/13/2025

On Justin Verboomen.

Carl Hester has said, “He’s exactly what the sport needs to keep moving in the right direction…His warm ups are as classical as his tests.”

This topic is being debated on various platforms and accounts. A student of Jeff’s shared this video with me and Jeff asking for feedback. Personally, I am barely qualified to analyze, but we were glad that Jeff decided to write us a response. He watched it and wrote up the following analysis and gave me permission to post here.

“Superficially steady and even, apparently uncoerced, not strangled. A dream compared to the likes of Glamourdale (a nightmare of spasticity and artificiality and anxiety!).
Walk is nice and well ridden.

Collected trot is fine, tho sometimes too much like Passage. He “switches” to Extension by a sudden increase in tempo, probably caused by the fact that there is more propulsion than impulsion, so it is a bit flat and hurried (on forehand).

There is a complete lack of “upward thrust” – an essential to distinguish the Medium or Extended trot from a hurtling downhill rush, irrespective of the throwing of the front legs.

Canter is a bit odd - whether by nature or nurture I don’t know. The hind end seems “bunched” (for lack of a better word) up under the horse - impeding fluency and reach, almost like he’s trying to get his hind feet quickly off a hot griddle. The outer hind passes the inner one OK, but instead of placing it on the ground in a flat supportive position, it strikes the ground with a backstroke - again creating propulsion rather than impulsion. It serves well, paradoxically, for the pirouettes, which were good. This is often caused by one of those strap “training devices” that hooks around the hind legs, like a breeching.

The Piaffe is nicely elevated, but lacks engagement. The front legs are raised evenly, but the front cannons don’t ‘hang’ vertically - the feet are retracted back under the thorax — a sign of lack of engagement (the high snatching hocks, without compression of the grounded/supporting hindleg)

This could be described as “Hanging out over the forelegs”, or “Forelegs too far back”. But behind, the hocks are flexed and lifted upward and pushed backward (you can see points of the hocks appear above and behind the other hock) - this is ‘hock action’, at the cost of engagement - in which BOTH hocks lower, one by compressing, the other by flexing, and lifting the hoof-end of the cannon, to make the cannon a bit closer to the horizontal. Could be described in the comments as “Hi-Hocked” or “No/Lacks engagement”. In addition, the grounded foreleg is angled backward towards the ground (a further indicator of ‘on the forehand’). Further, the raised legs make a backward/forward twitch or shake, in each lift.

The Passage is mostly even. It jumps too much, in false pursuit of brilliance or suspension or both. Typically (as here), this causes ‘tapping’ behind, in front, or both (it also causes ‘double dipping’ in many cases). The front cannons angle backward toward the hoof and ground – a sign that the horse is ‘tipped up’ behind, and loading the forehand, or as we say so deliciously in the South, “Tumped over”.

All that having been said……what to do with it? Is it a 2? Is it a 9? Dressage judging is a muddled mess – partly basic ignorance on the part of the judges, partly poor guidance from the “makers of rules and guidelines”, and partly from a lack of understanding of the biomechanics (movement) of horses.

I divide it as follows, as a matter of methodology, using the Passage in this performance as example - the correct mechanics of the “trick” or movement are ONE issue, the correct mechanics of “way of going” are ANOTHER issue. E.g., the horse could be incorrect in way of going (behind vertical, poll not highest point, broken neckline, above the bit, yet STILL perform the mechanics of the Passage correctly. Conversely, it could be very correct in basic way of going, but barely fulfill the minimum requirements to make the ‘trick’ identifiable as Passage.

This horse, in this presentation, was admirable for his calm but alert demeanor, good carriage, steadiness, reliability, consistency, brightness. Full marks for that!

However, the actual ex*****on of the steps of the Passage, was not, at almost any time, fulfilling its description. The same is true of the Piaffe.

If we had the luxury of giving a score for the Correct Way of Going, and another for Correct Ex*****on, it would be easier. Way of Going, in this example, might be between 8 & 10. Ex*****on (according to the definition of the movement) might be a 4 or, at most, 5 (Marginal).

So what should be the score?

Sadly, the emotional reactions of the ignorami seem to prevail, rather than a knowledgeable analysis of the points listed above. The judging seems to be “swayed by the crowd”, and without any sign of basic knowledge, training, expertise, or analysis.”

Belgium’s Justin Verboomen and Zonik Plus topped the podium in the FEI Dressage World Cup™ Grand Prix Freestyle on a score of 87.075%, making it back-to-back...

11/03/2025

While this is not theory and biomechanics, it is regarding the nature of the horse. I consulted Jeff over the past few weeks to get details about the development of tests for showing and how things were done. Jeff doesn’t think this concept is possible to implement. I think it is. As Jeff was present at the formation of CDS and one of the first 19 members, I got information from him about the history of dressage test development.

With ethics of equestrian sport on the table all the time, it seems this aspect of showing young horses could be discussed and talked about. What do you think?

And Chexy and I can be found on instagram at “impossiblecheckers”.





09/29/2025

Working with J. Ashton Moore (Jeff) (instagram) involves me sitting in his office and showing him video I put together based on theory we discuss throughout the year. I make a draft video with descriptive text and he corrects it, adds to it, and makes other technical analysis of the horse and rider that I incorporate. Jeff gave me the “notes” for each rider/horse pair in this video to further clarify details beyond hoof trajectory.

Jeff has been screaming into the ether for the last 20 years about the incorrect passage and piaffe exhibited at the highest levels of the sport. This video points out the difference between modern incorrect passage and historic correct passage in regard to hoof trajectory.

Fundamentally, the hoof should always advance and NOT go backward or in a circle. The limb should hang perpendicular to the ground for a moment before landing but never go backwards. However, all kinds of incorrect passage with the limb/hoof going backwards are rewarded with very high scores.

At least train your eye to see the difference when the hoof moves in a circle or backward instead of advancing in a smooth arc.

And note that the USEF and FEI describe the passage differently. And the FEI is incorrect. Jeff Moore and Liz Searle (LOOK HER UP) made sure that the correct description regarding “suspension” in passage was put in writing.

As correctly described by USEF, the passage has the longest phase of support with the least amount of suspension. What does happen is that a limb is suspended, not that the horse is making suspension. The FEI describes passage as having the longest phase of suspension which appears to suggest to riders they can chase their horse into doing something that is physically impossible.

Let the screaming begin!!











05/20/2025

Hollow back!! Just try it. I obviously know that humans are not horses. Horses are not humans. But we both have four limbs so we CAN apply analogous physics.

The continuing comparison between trots of correctly trained/moving horses vs horse that have been trained incorrectly and are “Schenkelgängers” (German for “leg-mover”) led me to make this video inspired by a discussion I was having with J. Ashton Moore and another student of his named Cello Lockwood .

We were having a theory discussion in Jeff’s office and Cello looked at the image I was sharing and lifted her arms making association between a hollow back and the increased range of motion of her arm. Jeff had already taught us the hollow back prevents the leg from stepping under and dissociates the hind legs from the torso/front legs. So the logical thought I had was that everyone needs to FEEL what a hollow back/raised back is like for themselves, so here we are.




04/22/2025

I had a discussion about what part of the front leg should be compared to the hind diagonal leg at extended trot with Jeff Moore. He said, “It was just common knowledge that you compare the diagonal cannons.” It wasn’t questioned when he was young. But he thought maybe we should look into it. So I did. Having access to his library, I spent a few hours looking for any references to parallelism at extended trot. Most books did not reference parallelism. Then those that had definitive text or images are compared in this reel. Take Away: Regardless of what part of the front leg (the forearm, cannon bone, or an average of the entire leg) is compared to the diagonal hind cannon, asymmetry to whatever degree indicates a disconnection between the hind and front end.Just notice the asymmetry of the whole and that is the “tell”.

01/31/2025

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