#152 - Michael Rintala, D.C.: Principles of Dynamic Neuromuscular Stabilization (DNS)

KEYPOINTS

• 01

  DNS grew out of the Prague School of Rehabilitation.

  Rintala, a San Diego chiropractor and one of about 18 international DNS instructors, traces the method to the 1950s Prague School at Charles University's medical faculty. Behind the Iron Curtain its three founding neurologists—Vladimír Janda, Karel Lewit and Václav Vojta—relied heavily on observation and palpation for diagnosis and treatment.

• 02

  Each founder contributed a piece.

  Janda, who had post-polio effects himself, described postural habits in which certain muscles tend toward tightness and others toward weakness, and linked these patterns to where imaging shows the most degenerative and disc changes—accumulated rather than traumatic. Vojta studied motor development in the first 12 months of life and used it to help children with cerebral palsy form motor patterns around brain lesions.

• 03

  Pavel Kolář turned these ideas into Dynamic Neuromuscular Stabilization.

  Kolář, who runs the rehabilitation department in Prague, began applying developmental kinesiology to athletes in the late 1990s and early 2000s, including javelin thrower Jan Železný and hockey player Jaromír Jágr. Through the early 1990s the Prague School's work was mainly rehabilitation for cerebral palsy and the general population.

• 04

  The diaphragm is a postural muscle, not just a breathing muscle.

  Picture the trunk as a cylinder: the diaphragm is the top (attaching to the lower ribs, the xiphoid and around L1–L2 at the thoracolumbar junction), the pelvic floor the bottom, and the abdominal wall the sides. When the diaphragm descends it creates intra-abdominal pressure; the pelvic floor and abdominal wall load eccentrically 'like wind blowing into a sail,' then hold that pressure to stabilize the spine.

• 05

  How you generate pressure matters.

  Lifting 300 pounds requires abdominal pressure, but DNS favors an 'inside-out' strategy—pressure loading the abdominal wall, followed by an interplay of concentric, eccentric and isometric work—over relying on concentric bracing alone. When the deep system can't create a fixed point through the trunk and pelvis, the brain compensates with overactive superficial muscles.

• 06

  Infant development is a blueprint for ideal movement.

  Around three months, maturation lets genetically ingrained motor programs coordinate the deep stabilizers. Milestones follow: rolling to the side around seven months, oblique sitting around eight, crawling around nine, kneeling at 10–11, squatting about 12, standing at 13–14 and walking about 14–16 months, with variation (Rintala's son walked at 10 months). He cites an observation that about 70% of infants mature normally while the rest sit on a spectrum toward pathology.

• 07

  Modern childhood interrupts that process.

  Shoes too early, propping devices and walkers, then six or seven hours a day in school chairs, can disrupt alignment between the pelvic floor and thoracic diaphragm. Postural habits that follow undermine pressure management and force transfer through the spine.

• 08

  Most low back pain is chronic overload, not injury.

  Outside trauma like a car crash or fall, Rintala sees inefficient deep stabilization paired with overactive flexors and extensors, producing hinging at the lumbosacral region—'like bending a spoon' repeatedly—until passive structures such as discs and facet joints give way. Attia notes roughly 80% of people will experience back pain.

• 09

  Train inside your functional threshold.

  The functional threshold is the load at which you can keep quality stabilization; beyond it lies the 'functional gap,' where bracing strategies get the job done at the cost of efficiency. Athletes live in that gap, and poor programs or overtraining keep them there, risking long-term stability.

• 10

  Adherence is the biggest limitation.

  Of 100 athletes in pain, Rintala estimates only 10–20% stay with the program until better, partly due to access to one-on-one care. DNS requires slow practice, such as relearning to breathe, which Attia frames as efficacy versus effectiveness: it may work when practiced, but must be stuck to.

• 11

  Eccentric and concentric loading both matter.

  Rintala defines concentric loading as a muscle shortening under load (the lifting phase of a biceps curl) and eccentric as lengthening under load (the lowering phase). Neither is 'right'—they serve different purposes, and more eccentric emphasis tends to drive hypertrophy—but most people train the concentric and neglect the eccentric. In DNS, eccentric loading of the pelvic floor and abdominal wall is central to stabilization.