This subject has been an obsession for me for months, so I apologize for how long this is probably going to be. I have a massive 16.3HH tank of a 12yo TB dressage horse who crashed into a concrete seating area with me in a lesson, tiling his pelvis, requiring almost a year off on light feed to waste the topline muscles down, allowing the pelvis to slowly realign. It was touch and go, I thought he might need a retirement.
I’ve been riding him about five months and have been obsessed with building correct, aligned muscle evenly developed on both sides, which has been interesting as he’s had two serious traumas to the SI on the left side. I’ve got a maniacally specific workout plan that (knock on wood) has worked very well. The program requires a ton of ground work, and honestly it’s a bit of a hassle but worth the effort.
Every engagement with this horse starts and ends with the same exercises on the ground, whether I’m hand walking him or giving him a full hour workout. Five reps of the hoof pick under the belly to get him to tilt his pelvis and two reps each side of the same exercise on each butt cheek for the same purpose. The whole objective is to get the horse to move his pelvis under his body before we even leave the grooming block. Then I’ll take each hind leg and give it a gentle lift upward and toward the body, hold for 10, let down slowly, 1 rep both sides. Then I’ll put the palm of my hand on the inside of each butt cheek, encouraging him to lean into my hand and release the other hip, one rep each side. Lots of praise and cookies after each stretch helps, my horse initially hated the stretching routine but now he’s quite keen to do it.
I do regular walking/trotting/cantering over poles both ridden and on the ground. I don’t think it’s wise to do too much pole work in one session, but I use poles almost every session. Same with lateral work, both ridden and on the ground, asking the horse to flex the hocks and engage the back, shoulder in to haunches in and back on the long side has been great.
This is going to be controversial, but I have to give some credit to Will Faerber’s videos. I did a lot of walking with my horse, in fact the first four weeks was just non-stop walking, no trotting until week five or six. I bought an extra long rein and then jerry rigged a pony rein to make it even longer and started doing that crazy walking in a grazing position that Faerber recommends. You start with the deep longitudinal stretch of the nuchal ligament and then eventually the horse will give you a deep lateral, also with the head extremely low, and then eventually the rib cage follows. I don’t do this at trot at all, but I have to say it was helpful in the walk and I have to credit this technique with loosening my horse through the body. After the first two months my horse got much stronger and he was like, “yeah I’m over that now” and stopped seeking the deep, low head position as he got strong enough to carry himself in a loose fashion with a loose nuchal ligament. Avoid small circles if you can, we have an arena the size of Nebraska with great footing and it was a blessing to be able to do huge 35 meter circles and super long straights so the stretch was able to be sustained without any bracing or instability
Another thing that helped a lot is being able to work the horse for a short amount each time, but two times per day. So I might do a morning ride and then and then come back and do a 10 minutes of hand walking over poles or a walk up and down a hill, very short intervals, doing the entire end-to-end stretching routine both times.
Given that you have a nicely blooded part Arab horse, your mare may have some back or croup tension as so many sensitive horses do. Managing back tension has been a full time job with my horse, but I don’t think he can build muscle correctly unless that back is relaxed before the work, during the work, and he’s put away with a really relaxed back after each engagement. On chilly mornings, I give my horse some cookies and run my hands in circles gently over his back to stimulate blood flow, then I’ll just throw a heavy saddle pad over his back while I groom him and put his boots on so he stays warm, so the back is warm and loose before we begin the stretch routine.
In terms of feed, I feed the hell out of my blooded horses, they seem to just need a ton of calories. We’re on three flakes of alfalfa, two bermuda, a fat scoop of TDI 16, one serving of Platinum CJ, a little Integrity rice bran for fats.
This routine has taken my horse from pathetic dud to total stud in a very short time. A lady last year asked me if he was a rescue case because he looked like shit, had no muscle tone. Now people stop me to ask what I’m feeding and how I’m conditioning, mares mistake him for a stallion. A woman I’ve known for years saw me riding him and said, “Oh good for you, you got a new horse finally!”
Good luck to you guys! I’m sure your mare will turn into a gorgeous beef castle in no time!