The Core Connection: How Your Abs and Pelvic Floor Work Together

Part of the Abs + Pelvic Floor Partnership series. This article explains how the abdominal wall, transverse abdominis, and pelvic floor work together—and how the Tupler Technique® and kGoal™ can support a more coordinated recovery plan.  Visit the kGoal website and get started on strengthening your pelvic floor.

Built-in visual: abdominal wall + pelvic floor partnership. No separate image upload needed.

TLDR: Your core is not just your abs. It is a coordinated system that includes the transverse abdominis, diaphragm, back muscles, and pelvic floor. When diastasis recti weakens the front of that system, the pelvic floor may carry extra pressure. The smartest plan is to rebuild abdominal support while improving pelvic floor awareness.

Many people talk about the “core” as if it means visible abdominal muscles. That is too narrow. Your true core is closer to a pressure-management cylinder. The abdominal wall helps control the front. The pelvic floor supports the bottom. The diaphragm influences pressure from above. The back muscles help stabilize the spine. When these parts coordinate well, your body has a better chance of moving, lifting, coughing, laughing, and exercising without dumping pressure into one weak area.

Diastasis recti changes that system. The issue is not only the visible gap between the rectus muscles. The deeper concern is the stretched connective tissue in the midline. When that tissue cannot create enough tension, the front of the core becomes less effective. That can make the belly bulge outward and may increase the pressure sent downward toward the pelvic floor.

Why the Core Works Like a System

Think of your midsection as a flexible container. The top, bottom, front, back, and sides all influence one another. When the transverse abdominis ( innermost abdominal muscle) gently draws inward, it helps create abdominal support. When the pelvic floor responds appropriately, it helps manage pressure from below. Neither part should be overworked in isolation. 

Infographic: The Four-Part Core Cylinder

Top: Diaphragm
Breathing influences intra-abdominal pressure. Breath-holding often increases pressure.
Front: Abdominal Wall
The transverse abdominis acts like a natural corset when trained without doming.
Bottom: Pelvic Floor
Supports bladder, bowel, and pelvic organs while responding to load and movement.
Back: Spinal Support
The back often compensates when the front core is not supporting well.

The goal is not to squeeze everything as hard as possible. The goal is timing. If you cough, lift a child, stand from a chair, or carry groceries, your abdominal wall and pelvic floor should respond together. When that timing is missing, symptoms may show up as belly doming, leaking, pressure, heaviness, or back fatigue.

How Diastasis Recti Changes Pressure

With diastasis recti, the two sides of the rectus abdominis are separated and the connective tissue between them is stretched. That can make traditional core exercises risky because most of them increase outward force against the linea alba. If the belly domes during an exercise, that is a sign the pressure is not being managed well will make the separation larger..

This is why the Tupler Technique® starts with transverse abdominal awareness, protected movement, and bringing the separated muscles closer together instead of forcing the body through high-pressure abdominal work. The method emphasizes exercises such as Elevator and Contracting, plus safer body mechanics for daily activities.

Where the Tupler Technique® and kGoal™ Fit

The Tupler Technique® addresses the abdominal side of the partnership: repositioning the muscles and connective tissue, training the transverse abdominis, and reducing movements that strain the midline. kGoal™ supports the pelvic floor side by making pelvic floor contractions more visible and measurable through app-guided biofeedback.

That combination matters because many people are not sure whether they are doing pelvic floor contractions correctly. Some bear down instead of lifting. Some over-squeeze and never fully relax. Some cannot tell whether the contraction is strong, weak, delayed, or inconsistent. Biofeedback can make the exercise less mysterious.

Visit the kGoal website and get started on strengthening your pelvic floor.

A Practical Daily Partnership Plan

  1. Start with posture. Sit tall enough that you can breathe without collapsing into your abdomen. Keep your back in neutral spine, which means it's not arched or rounded.
  2. Use gentle transverse engagement. Draw the belly inward without holding your breath or pushing down.
  3. Add pelvic floor awareness. Think of a gentle lift, then a full release. Avoid gripping.
  4. Track consistency. Use kGoal™ sessions for feedback and accountability, while keeping Tupler Technique® work focused on abdominal protection.
  5. Apply it to real life. Practice engagement before standing, lifting, coughing, or carrying.

What to Avoid While Rebuilding

Avoid for now Why it can be a problem Better focus
Crunches and sit-ups Always push pressure outward into the midline. Seated transverse contractions and protected movement.
Breath-holding during effort Can increase downward pressure on the pelvic floor. Count out loud while doing the exercises.
Random Kegels without feedback You may be squeezing incorrectly or failing to relax. Use guided pelvic floor awareness or biofeedback.
Key point: The abdominal wall and pelvic floor should be trained as partners. A stronger belly that still pushes pressure downward is not a complete solution. A stronger pelvic floor without abdominal support is also incomplete.

Ready to support both sides of the core system? Start with the Tupler Technique® to protect and strengthen the abdominal wall, then use kGoal™ for guided pelvic floor biofeedback and consistency.


Learn more about kGoal™ on Diastasis Rehab →

Frequently Asked Questions

Why do the abs and pelvic floor need to work together?

They are part of the same pressure and support system. When the abdominal wall is weak or separated, the pelvic floor may have to absorb more pressure during coughing, lifting, standing, or exercise.

Can I train the pelvic floor while doing the Tupler Technique®?

Yes, but the goal is coordination, not forcing harder contractions. The Tupler Technique® focuses on transverse abdominal  awareness and strength , while a biofeedback tool like kGoal™ can help you notice whether the pelvic floor is engaging correctly. 

Should I do crunches to strengthen my core?

Crunches are NEVER a smart starting point for diastasis recti because they can increase outward pressure against the midline and make the diastasis larger. A safer first step is transverse abdominal control and protected movement.

Is kGoal™ a replacement for pelvic floor therapy?

No. kGoal™ can help with awareness, tracking, and consistency, but it does not replace an individualized evaluation from a healthcare professional.

Educational note: This article is for general education and is not a diagnosis or medical treatment plan. If you are pregnant, newly postpartum, recovering from surgery, dealing with prolapse, pain, pressure, or leakage, consult a qualified healthcare professional or pelvic floor physical therapist before starting or changing exercises.

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