In-Saddle Core Check: 3 Simple Tests to See if Your Saddle Is Supporting or Sabotaging Your Stability

You’re trying to sit tall, keep your leg long, and follow the horse’s movement, but something feels… off. Your lower back aches after a ride, you find yourself gripping with your thighs to stay centered, and your instructor is constantly reminding you to “stop leaning.”

You work on your core strength off the horse, but in the saddle, that stability seems to vanish. What if the problem isn’t just your riding, but the very platform you’re sitting on?

Your saddle should be a silent partner, a stable base that allows your core to engage correctly and your aids to be clear. But often, it’s an obstacle, quietly forcing your body into a fight for balance it can’t win. To fix the problem, you first have to feel it. These three simple tests, done while your horse is standing still, promise a powerful “aha moment” about how your saddle is truly influencing your stability.

The Silent Conversation: Your Core and Your Saddle

Think of your core as the communication hub of your riding. A stable, engaged core allows you to move with your horse, maintain balance through transitions, and deliver precise aids from your seat. But for your core to do its job, your saddle must provide a neutral, supportive platform for your pelvis.

A well-designed saddle respects your anatomy. It allows your seat bones to rest evenly, keeps your pelvis from being tipped too far forward or back, and gives your thigh a place to hang naturally without forcing it into a tense, gripping position. When your saddle achieves this, your core can function as it’s meant to—stabilizing your spine without rigidity.

But what happens when that platform is tilted, twisted, or too narrow? Your body, in its brilliant attempt to keep you upright, starts compensating.

When the Platform Tilts: How Your Saddle Can Force Compensation

Every rider has natural asymmetries—one shoulder might be slightly lower, or one hip a little tighter. This is perfectly normal. However, a poorly fitting or unsupportive saddle can dramatically amplify these minor imbalances, creating a vicious cycle of compensation for both horse and rider.

A groundbreaking 2023 study published in Animals explored this exact issue. Researchers found that rider asymmetry led to significant, uneven pressure on the horse’s back. In some cases, the pressure under one side of the saddle was up to 30% higher than the other.

This isn’t just a number; it’s a constant, nagging pressure point on your horse’s muscles. Your horse feels this as a confusing, uncomfortable signal. In response, they may hollow their back, drift to one side, or resist moving forward freely.

This is where the cycle begins:

1. A saddle that doesn’t fit you or your horse properly exaggerates your natural crookedness.
2. You subconsciously grip with your thighs or brace with your lower back to feel secure.
3. This bracing creates even more uneven pressure on the horse’s back.
4. The horse alters its movement to escape the discomfort, making you feel even more unstable.

You work harder to stay straight, your horse works harder to avoid the pressure, and the quiet harmony you’re seeking feels further away than ever. Breaking this cycle starts with understanding what your body is feeling.

Your 5-Minute In-Saddle Stability Check

Find a safe, quiet place where your horse can stand comfortably, perhaps with a friend at their head. These exercises are not about strength; they are about awareness. Close your eyes if it helps you tune into the subtle sensations in your body.

Test 1: The Seated Leg Lift

How to do it: Sitting tall in the middle of your saddle, place your hands on your hips. Without changing anything else in your body, slowly lift one leg just an inch or two away from the saddle flap. Hold for three seconds, then slowly lower it. Repeat on the other side.

• What You Want to Feel: A gentle tightening deep in your lower abdominals. Your weight should remain evenly distributed on both seat bones, and your upper body should stay perfectly still and upright. The movement should feel stable and controlled, originating from your core.
• A Potential Warning Sign: As you lift your leg, do you feel your whole body tip to the opposite side? Do you have to grip with your other thigh to stay on? Does your hip collapse, or do you have to lean your shoulder to counterbalance? This indicates your saddle may be creating an unstable point of balance, forcing your larger muscles to do the work your core should be handling.

Test 2: The Torso Twist

How to do it: Cross your arms over your chest. Keeping your hips and legs still, slowly rotate your upper body to the right, as if looking behind you. Go only as far as is comfortable. Return to center and repeat to the left.

• What You Want to Feel: The rotation should originate from your spine, above your hips. Your seat should remain quiet and stable, with both seat bones maintaining even contact with the saddle.
• A Potential Warning Sign: Does turning your body make your entire pelvis shift? Do you feel one of your seat bones digging in while the other lifts completely? If your saddle is holding your pelvis in a grip, this simple twist becomes impossible without shifting your entire base of support. Understanding the anatomy of the rider’s seat can help you become more aware of how these subtle shifts affect your connection.

Test 3: The Pelvic Tilt

How to do it: Place your hands on your hips. Gently and slowly, arch your lower back to tilt your pelvis forward (like a “cow” stretch), then round your lower back to tilt it backward (like a “cat” stretch). The movement should be small and subtle.

• What You Want to Feel: A smooth, fluid rocking motion. You should feel your weight shift from the back of your seat bones to the front and back again without feeling blocked or jammed.
• A Potential Warning Sign: Do you feel stuck? Many riders find they can tilt back but feel completely blocked from tilting forward, or vice versa. This often means the saddle’s seat profile or twist is forcing you into a specific position (like a “chair seat” or a “fork seat”), inhibiting your ability to follow the horse’s natural motion. This is a classic example of how saddle design influences rider position, sometimes to the rider’s detriment.

Interpreting the Results: What Your Body is Telling You

If you found these tests challenging, don’t be discouraged. You’ve just uncovered valuable information. The instability, gripping, or blocking you felt isn’t a sign of failure; it’s your body telling you that your current saddle may not be the right partner for your anatomy.

A saddle that truly fits you provides a “neutral pelvic position.” It creates a balanced foundation that doesn’t force you into a specific posture. Instead, it supports your natural structure and frees your core to do its job. At Iberosattel, this principle is the foundation of our design philosophy: creating a base that allows for effortless balance, so you can focus on the ride, not on fighting your equipment.

When your saddle provides this support, your aids become clearer and your position more secure, leading to a more comfortable and willing horse.

Frequently Asked Questions (FAQ)

I do core exercises off the horse. Isn’t that enough?

Off-horse core work is fantastic and essential. However, if your saddle is actively pushing you out of alignment, even the strongest core will be forced to compensate and brace rather than stabilize. It’s a two-part equation: a strong, educated core paired with a supportive, neutral saddle.

These tests are done at a standstill. Do they really matter when I’m riding?

Absolutely. The small instabilities you feel at a halt are magnified tenfold at the trot and canter. A slight tip at the walk becomes a major balance check in the canter. A little grip at the halt becomes a locked, tense leg over a fence. Addressing the root cause at a standstill is the first step to solving the dynamic problem.

What if I feel unstable in every saddle?

This could point to a personal asymmetry you need to work on with a physiotherapist or bodywork professional. However, a well-designed saddle should help manage and support that asymmetry, not make it worse. This is especially true for many riders whose pelvic structure requires specific support. Exploring different saddle designs, like those found in our guide on saddle solutions for female riders, can reveal how tailored ergonomics make a difference.

Is it normal to feel a tiny bit of tipping during the leg lift?

A very small, micro-adjustment is normal as your core works to maintain equilibrium. The red flag is a large, uncontrollable tip where you feel you have to grab with your muscles to prevent yourself from falling to one side. The difference is between stabilization (good) and bracing (a warning sign).

From Awareness to Action: Your Next Step to Stability

You now have a new way to listen to your body and your saddle, and that awareness is the most powerful tool a rider can possess. Your saddle isn’t just a piece of leather; it’s the interface between you and your horse. It should clarify communication, not create static. It should be your partner in stability, freeing you to achieve a truly harmonious connection with your horse.

Now that you can feel the difference a stable platform makes, the next step is to understand why these differences exist in saddle design and fit. To continue your journey, explore our comprehensive guide on the essentials of saddle fit for horse and rider to connect what you feel with the principles of great saddle ergonomics.