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3 Month Supine with Leg Lowering
for Core Stability & Low Back Control

A DNS-based core stability progression prescribed by Dr. Dockery to train deep abdominal pressure, hip control, and lumbar stabilization — one leg at a time.

5–10 min/day
10 reps per leg
No equipment needed
Livonia, MI
What Is It?

What Is the 3 Month Supine with Leg Lowering?

The 3 Month Supine with Leg Lowering is a core stability progression rooted in Dynamic Neuromuscular Stabilization (DNS) — a rehabilitation approach based on the developmental movement patterns that humans naturally use in the first year of life. The “3 month supine” refers to the position a healthy three-month-old infant assumes: on their back, hips and knees at 90 degrees, spine neutral, deep core muscles pressurized and active.

The leg lowering component adds a controlled challenge to that foundational position. By slowly lowering one leg toward the floor while keeping the low back flat and intra-abdominal pressure maintained, the exercise trains the deep stabilizing system — the diaphragm, pelvic floor, transverse abdominis, and multifidus — to work together as an integrated unit under load.

The goal is not range of motion. It is quality of stabilization: how far can you lower your leg before your low back loses contact with the floor, your ribs flare, or your hip begins to click or pinch? According to research on lumbopelvic stability, coordinated deep core activation is one of the most important factors in chronic low back pain prevention and recovery.

Who It Helps

Common Conditions This Exercise Addresses

Dr. Dockery commonly prescribes this exercise for patients dealing with any of the following:

Chronic low back pain
Core weakness or instability
SI joint dysfunction
Hip flexor tension & impingement
Poor lumbopelvic control
Post-partum core rehabilitation
Athletic performance & injury prevention
Recovery after spinal injury or surgery

Clinical note: This exercise is a natural progression from the basic 3 Month Supine / 90-90 Breathing position. Patients should be comfortable maintaining a flat low back and proper abdominal pressure in the static position before adding leg movement.

How To Do It

Step-by-Step Instructions

Move slowly and with full control. You should feel gentle abdominal engagement — not gripping, bracing, or breath-holding. If your low back arches, your ribs flare, or you feel hip clicking or pinching, reduce your range of motion or return to the static 90/90 position first.

1

Set up your position

Lie on your back on a firm surface. Bring both hips and knees to approximately 90 degrees — feet in the air, shins parallel to the floor. Let your low back settle gently flat against the floor. Keep your neck long and chin slightly tucked.

2

Create abdominal pressure

Gently expand your abdomen in all directions — front, sides, and back — as if you are “ballooning” it outward. This is intra-abdominal pressure, not sucking in. You are pressurizing the cylinder of your core, not flattening it. Maintain this pressure throughout the movement.

3

Slowly lower one leg

Keeping the knee bent, slowly begin lowering one leg toward the floor. Focus on extending through the hip rather than pulling from the hip flexor. Lower only as far as you can while keeping the low back completely flat and the abdominal pressure intact.

4

Return and repeat

Bring the leg back to the starting 90-degree position before lowering the opposite leg. Alternate sides with slow, deliberate movement. Complete 10 repetitions per leg as a starting point, provided the movement stays quiet, controlled, and pain-free.

Form Cues

Key Technique Points to Focus On

Keep the low back flat throughout — the moment it arches off the floor, you’ve exceeded your current range of control
Do not let the ribs flare — rib flaring is a sign the diaphragm has disengaged and the spine has lost its neutral position
Maintain abdominal pressure, don’t grip — gentle, 360-degree expansion, not a hard brace or a stomach vacuum
Think “extend through the hip,” not “pull with the hip flexor” — this cue reduces anterior hip tension and keeps the movement pattern clean
Move slowly and stop before symptoms appear — hip clicking, pinching, or low back discomfort are signals to reduce range, not push through
Keep breathing — do not hold your breath during the movement; breath coordination with core pressure is part of what makes this exercise therapeutic
Video Demonstration

Watch the Technique

3 Month Supine with Leg Lowering — Life in Motion Chiropractic

Dr. Dockery demonstrates proper setup, abdominal pressure cues, leg lowering technique, and common errors to avoid.

Benefits

Why This Exercise Works

Trains the deep stabilizing system — the diaphragm, pelvic floor, transverse abdominis, and multifidus must work together to hold position as one leg moves
Builds lumbopelvic stability under load — prepares the spine and pelvis for the demands of standing, walking, lifting, and sport
Reduces chronic low back pain — addresses the neuromuscular control deficits that commonly underlie persistent lumbar symptoms
Improves hip mobility without compensation — teaches the hip to move independently from the lumbar spine
Bridges the gap to functional movement — the coordination patterns trained here transfer directly into squatting, lunging, running, and daily activity
Safe and scalable — range of motion is self-limiting based on your current control, making it appropriate for a wide range of patients
Further reading
Physiopedia — Dynamic Neuromuscular Stabilization (DNS) overview NIH — Lumbopelvic stability and low back pain Mayo Clinic — Low back pain causes and treatment NIH — Core stability training for low back pain rehabilitation
Common Questions

Frequently Asked Questions

How many reps and sets should I do?
Start with 10 controlled repetitions per leg per session. Quality matters far more than volume here — a perfect 5-rep set is more beneficial than 20 sloppy ones. Dr. Dockery will prescribe the appropriate volume and frequency based on your condition and response to treatment.
My hip clicks when I lower my leg. Is that okay?
Hip clicking during leg lowering is a sign that you’ve exceeded your current range of controlled stability. Rather than pushing through the click, reduce the range of motion to the point where the movement stays quiet. First focus on increasing abdominal pressure — often the click disappears when the core is properly engaged. If it persists, consult Dr. Dockery to rule out structural hip issues.
What is the difference between this and a leg raise?
A standard leg raise typically emphasizes hip flexor strength and is often performed with the lumbar spine unsupported or arching. The 3 Month Supine with Leg Lowering specifically trains the deep stabilizing system to maintain a neutral spine while a limb moves — an entirely different neuromuscular task that directly addresses the root cause of low back instability.
What exercise should I do before this one?
The 90/90 Breathing exercise is the foundational prerequisite. You should be able to maintain a flat low back and proper abdominal pressure in the static 3 Month Supine position before adding leg movement. If you struggle to find the position, start there first.
Can I do this exercise if I have a herniated disc or sciatica?
The 3 Month Supine position is generally well-tolerated for disc and sciatic conditions because it decompresses the lumbar spine and unloads the nerve roots. However, the leg lowering component adds demand on the lumbopelvic stabilizers, and individual responses vary. Always have Dr. Dockery assess your specific presentation before progressing to this exercise.
How does this fit into a broader rehab program?
This exercise is typically prescribed as a progression after 90/90 Breathing has been mastered, and before more demanding exercises like dead bug, bird-dog, or loaded functional movements. It sits in the middle of the DNS developmental progression — after static stabilization and before dynamic loaded patterns. Dr. Dockery will sequence your exercises appropriately based on your goals and presentation.

This content is for educational purposes only and should not replace individualized care. Stop this exercise if symptoms worsen, and consult Dr. Dockery or your healthcare provider if you are unsure whether it is appropriate for your condition.

Core or Low Back Pain?

Dr. Dockery will assess your deep core function, movement patterns, and spinal stability — then build a rehab plan that addresses the root cause.

Book an Appointment Call 734-427-6333

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Build a Stronger, More Stable Core in Livonia, MI

Exercises like this are most effective as part of a complete DNS-based rehabilitation plan. Dr. Dockery serves patients throughout Livonia, Farmington Hills, Redford, Plymouth, and the greater Wayne County area.

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