A strong back is the foundation of a healthy, balanced, and long-lasting horse. When the back is strong, your horse can carry the rider with less tension, respond more quickly to your aids, and work longer without compensating with the wrong muscle groups. In this guide, we'll walk through how the horse's back actually works, what the research says about core training, and how to build back strength safely and effectively.

Why is your horse's back so important?

The horse's back isn't a rigid beam, it's a long series of joints that must work together every time the horse moves. The spine is held in place by an entire system of muscles: the long back muscle (longissimus dorsi), the abdominal muscles (rectus abdominis and the obliques), and the musculature around the hips and hindquarters.

When any of these muscle groups is weak or inactive, others have to compensate — and that's where tension, lameness, and injuries often begin. A strong, well-coordinated core gives your horse:

• Better balance in turns and transitions
• A rounder, more supple way of going
• Less wear on joints and tendons
• A greater ability to carry the rider without dropping the back

This isn't just theory. A healthy back is directly linked to your horse's long-term soundness, which is why it's one of the most important things we can work on in daily training.

What does the research say about core training for horses?

Over the past few years, several scientific studies have looked specifically at how to strengthen the equine core and back.

The Royal Veterinary College in London published a study in 2017 in which seven horses were trained for four weeks with a system of elastic resistance bands attached to a saddle pad. The researchers used inertial motion sensors to measure the horse's back movement before and after the programme. The result: the bands significantly reduced rotational and side-to-side movement in the thoracic and lumbar regions — meaning the back became dynamically more stable at the trot.¹

A later study from the University of Tennessee used surface electromyography (sEMG) to measure muscle activity directly. It showed that elastic resistance bands increased activity in the rectus abdominis, exactly the muscle that supports the back from underneath.²

The point isn't that bands are a magic solution. It's that they provide a gentle proprioceptive cue, a sensory nudge, that reminds the horse's body to activate the right muscles during movement. That's how core training works in practice: not by forcing a posture, but by helping the horse find it on its own.

How to build your horse's back, three building blocks

Strengthening the back isn't a single exercise; it's a way of varying and structuring training. Here are three building blocks we recommend.

1. Groundwork with poles

Walking over poles, first flat on the ground, later as low cavaletti, forces the horse to lift the legs actively, which recruits both abdominal and back muscles. Research shows that walking over poles increases activity in the longissimus dorsi, and trotting over poles increases activity in the abdominal muscles.² Start with five to eight ground poles, spaced roughly 3 to 4 metres apart, and work in a calm walk before increasing tempo or height.

2. Lungeing with support for core and hindquarter muscles

Lungeing is an excellent opportunity to build strength because the horse works without the rider's weight. When you combine lungeing with a training-band system like CORE by D, your horse gets a gentle reminder to engage the core and hindquarters, without you forcing the frame with side reins or tight auxiliary aids. Start with short sessions (10–15 minutes) and increase gradually.

3. Varied terrain and hill work

Hacking, gentle hill work, and varied footing get the entire core working the way it should. It's probably the most underrated form of core training for horses, and it requires no equipment at all beyond time.

How often and for how long?

Most horses respond well to two or three strength sessions per week, with one or two rest days in between. Back musculature needs recovery like any other muscle, training hard every day produces worse results, not better ones.

A realistic progression for a sound horse:

• Week 1–2: short sessions (10–15 min), light load, focus on keeping the horse relaxed
• Week 3–4: increase session length to 20–25 minutes, introduce ground poles
• Week 5 onwards: varied load, longer sessions, combining lungeing, groundwork, and ridden work

Expect at least four to six weeks before you see clear changes in musculature and movement quality. Musculoskeletal adaptation takes time, but when it comes, it lasts.

Common mistakes to avoid

• Too much, too fast. Tightening bands aggressively or running long sessions in the first week leads to soreness and resistance. Loose and often beats tight and rare.
• Ignoring signals. If your horse becomes reluctant, swishes the tail, or drops the back, pause. That's information, not disobedience.
• Thinking only about the back. Core and hindquarter muscles work together. Isolated “back training” rarely works, it's the whole picture that builds a durable horse.
• Skipping the warm-up. At least 10 minutes of walk before anything more demanding.

When should you call a vet?

If your horse shows signs of pain, reluctance in transitions, tail-swishing, dipping the back when saddled, or clear asymmetries in movement, always consult a veterinarian or qualified equine physiotherapist before starting a strength programme. Core training can be a brilliant part of rehabilitation, but it is never a substitute for diagnosis.

Ready to start structured core training?

CORE by D is an elastic training-band system that attaches to a saddle pad with clips. It's developed in collaboration with veterinarians and trainers to help your horse activate the right muscle groups during ridden work and lungeing, simple to use in your daily session.

👉 Discover the CORE by D Complete Set

References

1. Pfau T, Simons V, Rombach N, Stubbs N, Weller R. Effect of a 4-week elastic resistance band training regimen on back kinematics in horses trotting in-hand and on the lunge. Equine Veterinary Journal. 2017;49(6):829–835. doi:10.1111/evj.12690

2. Shaw K, Ursini T, Levine D, Richards J, Adair S. The Effect of Ground Poles and Elastic Resistance Bands on Longissimus Dorsi and Rectus Abdominus Muscle Activity During Equine Walk and Trot. Journal of Equine Veterinary Science. 2021;107:103772. doi:10.1016/j.jevs.2021.103772