Discover how LabO RNP fills the operational gap in the training of human movement professionals between biomechanics and neuroscience.
Published on May 21, 2026
The missing level is the central idea of LabO RNP. It is the empirical observation that in the French-speaking training of human movement professionals, there is an operational gap between biomechanics (which looks at the executed gesture) and clinical neuroscience (which looks at the cortex), on which no one has laid a practicable integrative framework.
This level is that of motor decision and the sensorimotor loop. LabO RNP exists to fill this gap: not by inventing a science, but by translating fragmented knowledge into silos into an operational framework with four pillars, transmittable as early as Monday morning to a movement professional.
Summer 2020. Three physical trainers who met in common training sessions (functional neurology, primitive reflexes, clinical posturology) and then exchanged for months on Messenger have just pooled a month's work to offer an online assessment around the sensorimotor loop. Sébastien Zimmer, Adrien Chartier, Romain Katchavenda.
On the day of the live presentation, five hundred movement professionals are connected. Sports coaches, physical trainers, physiotherapists, osteopaths, psychomotor therapists. At the end of the live, they offer their assessments. The live bugs. Only one assessment sold out of five hundred people. That night, they stay on video call until two in the morning. At 2:17 am, they write a collective email to everyone from the live: "What were you expecting? Be honest."
The response, upon waking, is massive and unequivocal: no one wanted an assessment, everyone wanted training. The trained professionals were not asking for a new evaluation. They were asking for the level they lacked to read and reprogram what they had in front of them on Monday morning.
"A level is missing. That of the brain."
It is this operational gap, between biomechanics which looks at the executed gesture and clinical neuroscience which looks at the cortex, that five hundred professionals named in the hollow that night, and that LabO RNP eventually called the missing level. It is in this gap that half of the cases a movement professional encounters each week live: the person who plateaus without an identifiable biomechanical cause, the athlete who repeats the mirror injury, the child whose posture resists six months of strengthening.
The empirical dimension of this observation is not speculative. It is documented by feedback from over nine hundred trained professionals in six countries, by Adrien Chartier's studies in schools (2025) on children with neurodevelopmental disorders, and by the continuous feedback from the LabO community. The missing level is not a brand formula. It is a reproducible observation that trained professionals make on their own practice, before and after having read it.
The diagnostic sign of the missing level is always the same, regardless of your territory: the accompanied person who plateaus despite the rigor of the protocol. You do what you know how to do, you do it well, and yet it doesn't hold, it doesn't progress, it comes back.
For a physiotherapist facing recurring lower back pain after six months of proper rehabilitation, the missing level is what decides that the protective posture still holds even though the original injury has been resolved. You feel, under your fingers, the paravertebral tone that doesn't release. You know you can't relax it from the periphery. But without access to this level, you correct the exit indefinitely.
For a physical trainer facing an athlete who plateaus for eighteen months without an identifiable biomechanical cause, the missing level is the postural strategy frozen at a pelvic tilt. It's the pivotal Coaching case: "From a biomechanical point of view, nothing was happening."
For a psychomotor therapist facing a child who doesn't organize to read, the missing level is the residual primitive reflex that disrupts motor decision upstream of the reading gesture. The classic assessment doesn't see it, because it doesn't look for it.
The moment a professional sees the missing level for the first time is rarely a course. It's a moment. During a LabO seminar, they are asked to watch an athlete walk before touching anything. They watch. And there, in silence, in their body, they understand: all my career, I've worked on what executes, never on what decides. They are forty-seven years old. They have just seen what they had always looked at without seeing.
"Your tools are good. Your framework stops one level too low."
We hear that the missing level is a gap in science, that LabO claims to discover an unknown continent. Not a gap in science. An operational gap in French-speaking professional training. Sherrington established the loop in 1906. Gibson founded dynamic ecology in 1979. Friston formalized active inference in 2011. Science has laid all the pieces for a long time. What was missing was not a discovery, but the practical integrative framework that no one had built for a movement professional, in French, applicable from Monday morning.
We then hear that pointing out a gap amounts to accusing colleagues and existing schools. It is exactly the opposite. The education system sells knowledge in separate pieces that should be continuous, and teaches how to correct the gesture without ever reprogramming the decision that precedes it. You were made to pay to learn about articulation, muscle, fascia. No one sold you the upper level because no one had it to sell. It's a systemic critique, not an ad personam critique of the founders or schools.
We hear that the missing level is a marketing revelation. It is a reproducible empirical observation: trained professionals observe it themselves by looking at their practice before and after. Measurable. Reportable.
And finally, we hear that LabO RNP is just another training to stack in an already saturated library. We respond with a simple phrase: it is not another training, it is the framework that organizes those you have already stacked. The missing level replaces nothing. It organizes everything you already know how to do, by providing the reading you were missing.
The missing level is not a gap in science. It is the operational framework of what science has established, but in silos that did not communicate with each other.
Sherrington established in 1906 the reflex loop and the closed sensorimotor circuit. Magnus established in 1924, in Körperstellung, that posture is a matter of tone controlled by the brainstem. Bernstein formalized in 1967 the problem of degrees of freedom and the hierarchical organization of movement. Three major pieces, in three different languages, isolated from each other.
From 1970, Goddard Blythe and the INPP documented the imprint of archaic reflexes on adult motor skills. Gibson, in 1979, founded the ecological approach to perception, in explicit break with the representationalist paradigm. Carrick structured clinical functional neurology from 1979. Four new pieces, each in its field, without bridges between them.
Damasio, between 1994 and 2018, reintegrated emotion into motor cognition. Friston formalized active inference in 2011: a contemporary piece that locks in the predictive primacy of the nervous system.
All these pieces exist. None had been operationally framed for a movement professional, in French, applicable from Monday morning. This is what LabO RNP did in 2020.

Neuro-Postural Reprogramming (NPR) is a French-speaking professional discipline founded in 2020 by three physical trainers (Sébastien Zimmer, Adrien Chartier, Romain Katchavenda). It teaches human movement professionals to interpret the motor decision preceding a gesture through an integrative framework with four pillars (functional neurology, primitive reflexes, posturology, training), and then to reprogram it.
This week, I revisited the narrative review by Guzman-Munoz and colleagues, published in March 2026 in the Journal of Clinical Medicine. The title announces an integrative framework for human postural balance. What struck me was not so much the synthesis of mechanisms, which remains classic, but the conceptual groundwork laid out at the beginning of the article. The authors take the time to isolate two notions that the French literature and clinical practice almost always mix: postural control and postural balance.
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