Each of the 5 steps carries 1 phase, from decompressing a guarded spine to stabilizing it on the rolls, and the sequence restarts at reassessment
Eileen Durfee's Spinal Fitness book orders its correction loop in 5 phases: Decompression, Load Correction, Structural Rebuild, Cervical Integration, and Stabilization and Retention, each carried by one of the 5 steps. In the book's words, the body is assessed, decompressed, reorganized, integrated, stabilized, and then reassessed, and the loop repeats as the body improves and demands increase.
The book trains the spine at 2 levels. Global training addresses the larger structure, particularly the lumbar lordotic curve and the overall S-shaped posture, and Back Trac rolling is its primary exercise. Segmental training addresses the joint-by-joint relationships between individual vertebrae, which the book calls especially important in the lower lumbar spine, and the Pelvic Tilt is its primary exercise, targeting the L4-S1 relationship. The loop progresses from global decompression to segmental loading because the foundation must be established before the spinal segments can be safely trained. The Back Trac, the PowerCushion and the Neck Shaper rolls for the 5 steps are in the Creatrix spine alignment equipment collection.
The book's reason for the sequence: most failed programs do too much too soon or correct in the wrong order, strengthening an unstable system, mobilizing a guarded system aggressively, or imposing posture without changing the forces that created it. Its clinical note states that disc hydration, facet spacing, ligament tension and muscle guarding are all time- and position-dependent, so a body that is still guarding heavily will not benefit from strengthening the way a calmer, better-organized body will.
| Phase | Step | Goal in the book | Starting dose in the book |
|---|---|---|---|
| 1. Decompression | Back Trac rolling | Reduce guarding; restore segmental motion | 30 to 60 seconds of easy passes, or 6 to 10 slow passes, once a day; medium density first |
| 2. Load Correction | Pelvic Tilt over a fulcrum | Change how force travels through the lower spine and pelvis | 10 reps over the fulcrum in the Warehouse Standard |
| 3. Structural Rebuild | Sit-Up over the PowerCushion | Restore the curves while the trunk moves against gravity | 6 to 10 reps at light density in the Desk Standard reset |
| 4. Cervical Integration | Neck Flexion | Reset forward head posture | 6 reps, 6 times a day; 10 reps when 6 no longer create strain |
| 5. Stabilization and Retention | Spinal Twist and Shaper rolls | Let the body settle and hold alignment | 25 seated twist reps, then 18 to 20 minutes on the rolls, no longer |
Phase 1, Decompression. The goal of Phase 1 is to reduce guarding and restore segmental motion, without brute stretching or aggressive mobilization. Back Trac rolling lets the spinous processes float while the surrounding structures are supported and articulated, which the book states changes pressure distribution and reduces protective tone.
Phase 2, Load Correction. The Pelvic Tilt begins to change the way force travels through the lower spine and pelvis. For Phase 2, the book states that if the pelvis stays in a damaging orientation, the rest of the chain keeps compensating however strong the person becomes. The forces, approximately 70 pounds through the ASIS at the front of the pelvis and 149 pounds of shear at the S-L5 joint in Dr. Scherger's analysis, are laid out in the PowerCushion pelvic tilt analysis.
Phase 3, Structural Rebuild. The Sit-Up over the PowerCushion restores the spinal curves while the trunk moves against gravity and resistance, retraining the anterior support system without flattening the lumbar spine or letting the neck and hip flexors dominate. The book calls Phase 3 the phase where the body begins to replace bracing with organized strength.
Phase 4, Cervical Integration. Neck Flexion is the upstream reset for forward head posture. When the head comes back over the trunk and the cervical spine regains cleaner mechanics, the book states, the low back, shoulders and posterior chain often reduce their background guarding almost immediately. The load figures behind it are in the neck load by head position article.
Phase 5, Stabilization and Retention. "If the body cannot rest in alignment, it will not keep alignment." The Spinal Twist, 25 seated reps with left and right counted as 1, is followed by supported rest on the Neck and Back Shaper rolls, which gives the joints, discs, fascia and nervous system a chance to settle while gravity is partially taken off the system. The book caps the rest at 18 to 20 minutes, because longer sessions can cause the nervous system to lose tension in ways that may increase instability, and always places the twist before it.
The book states the cost of breaking the order: skipping phases forces compensation into the next phase and reduces lasting results, and stabilizing before decompression is complete stabilizes a stiff, guarded spine in a compensated position, making the compensation stronger and harder to correct.
Chapter 9's foundational principle, attributed to Dr. John Scherger, is that the human body adapts to the effects it is consistently subjected to. To adapt toward the S-shape, the spine must be subjected to gravity and resistance applied from the anterior direction, which the Sit-Up over a fulcrum, Neck Flexion against anterior resistance and the anterior-loaded Pelvic Tilt share. The posterior direction has poor mechanical advantage at every position: resisting a posterior force creates total compression at L5-S1 above 1,200 pounds from stabilizing a 100-pound upper body, with total effort across the lumbar joints above 1,700 pounds, in proper and improper posture alike.
Lying over the fulcrum, in the book's words, is "a preparation, not an adaptation stimulus": the passive phase softens and prepares the tissue, and the active phase against appropriate resistance causes the spine to adapt. Naturally or surgically fused spinal segments, the book states, cannot be reshaped; the program then optimizes what can change, improves force management and protects the adjacent segments.
The book defines 3 dosing dimensions. Duration: passive fulcrum work begins at a few minutes and builds toward 15 to 20 minutes, and active work is counted in reps. Intensity has 2 levers, the external load and the density or diameter of the fulcrum, so a firmer or larger fulcrum raises curvature demand at the same body weight. Frequency is the number of training sessions per day or week, and the book calls it the most powerful lever because adaptation responds to cumulative stimulus: "The body adapts to the most consistent stimulus, not the most intense one."
The trainer rule: "Do not skip phases because the client is eager or strong. If they are still bracing through Step 1, Step 2, or Step 4, they are not ready for more load." When a participant plateaus, the book checks all 3 dimensions before adding reps; often the answer is a slightly firmer fulcrum, or splitting 1 daily session into 2 shorter ones.
Track A, basic prevention for all staff, is a daily micro-dose of cervical work, a lumbar curve reset and end-of-shift decompression, 5 to 10 minutes total per day. Track B, high exposure, adds the Pelvic Tilt with resistance, progressive Sit-Up range and density, and guided Back Trac rolling, 10 to 20 minutes per day. Track C, recovery and return-to-work, is a supervised training track: the softest fulcrum, minimal range, decompression before active correction, and progress gated by form and comfort rather than schedule. The starting step comes from the book's 6-test curvature screen, which can move the first step to Step 4, Step 2 or Step 5.
Stop immediately and seek medical evaluation for progressive weakness, changes in bowel or bladder control, saddle numbness or severe radiating symptoms. Do not begin without clinician clearance with a known spinal fracture, advanced osteoporosis, unstable spondylolisthesis, active infection or recent surgery.
The Back Trac carries Phase 1 decompression, and the Neck Shaper Kit carries the Neck Flexion of Phase 4.
Practitioner Eileen Durfee, NBS (Nutritional Balancing Science), NASM-CPT — wellness educator, inventor, author, and a Nationally Certified Spinal Fitness Specialist.
The Back Trac hydrates the spinal discs, opens up the nerve canals, stretches fascia and helps hydrate the fascial slings, and every spinal joint has 16 different possible articulations. On long sitting days I do Neck Flexion with the Neck Shaper, about 10 reps at every bathroom, food or water break.
Our Facebook group is free to join for questions about any of the 5 steps in the Spinal Fitness system.
Decompression, Load Correction, Structural Rebuild, Cervical Integration, and Stabilization and Retention, followed by reassessment.
The book states that a body still guarding heavily will not benefit from strengthening the way a calmer, better-organized body will; Phase 1 reduces guarding and restores segmental motion so later loading goes in the intended direction.
The book says not to skip phases because a client is eager or strong. Bracing through Step 1, 2 or 4 means the person is not ready for more load.
Frequency. The book states that the body adapts to the most consistent stimulus, not the most intense one.
18 to 20 minutes maximum, always after the Spinal Twist.
Published October 20, 2026 • Updated October 20, 2026
By Eileen Durfee, Nationally Certified Spinal Fitness Specialist, NASM-CPT, and author of the Spinal Fitness book.
More from Eileen Durfee
Eileen's free guide, Is Your Posture Aging You?, on EileenDurfee.com
This article is for educational purposes only. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. Nuco Enterprise Solutions LLC.
