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Three professions. One question nobody asks.

Load instability, regression under effort, compensation that returns: three professions, one mechanism. Read the perception-action loop first.

By the LabO RNP teamReading time 2 minUpdated 2026

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Contents

  1. We watch the action
  2. What biomechanics alone did not show
  3. Three professions, one phenomenon

You have probably lived this: the sessions are well run, results arrive, then fade, or hold only up to a certain intensity threshold, or come back identical a few weeks later. And you look for what you missed, in the technique, the strengthening, the mobilization.

A nervous system that keeps returning to the same place, under the same conditions, does not do so by chance or for lack of work. The question becomes: are we observing at the right level?

We watch the action

A coach who corrects the squat watches the action. A physio who strengthens a knee watches the action. An osteopath who treats a compensation watches the action. That is legitimate, it is where the problem is visible, but it is rarely where it originates.

Before the squat starts, the nervous system has already done its calculation: it has collected the signals from the inner ear, vision and the body, weighted them according to how reliable they are at that moment, then decided how to organize the movement. If that representation is approximate, the movement will be unstable, far more for lack of a complete map than for lack of strength (the perception-action loop).

What biomechanics alone did not show

When you observe this loop, you see other things:

  • instability in the squat sometimes gives way to visual input

  • recovery depends on proprioceptive information

  • compensations that come back are sensory strategies

Same loop, different contexts, and the same variable to read before intervening (proprioception, a sense you can train).

Three professions, one phenomenon

What surprises people most in training is the moment when professionals who are not used to working together realize they are describing the same thing in different words. The coach talks about instability under load, the physio about regression under effort, the osteopath about a compensation that comes back.

Once the perception-action loop grid is in place, the descriptions converge: the professions stay different, but the mechanism is the same, and recognizing it changes the way you intervene. Reading the output and reading what produces it are not opposed; these two levels simply do not give the same access to the problem, nor the same results over time.

Behind different professions, there is often the same question.

To start reading before you intervene, the introduction to RNP, Neuro-Postural Reprogramming, is free, and so is the pathway "How we learn to move".

You are a practitioner and want to know whether the training is right for you: book a call with the team.

Contents

We watch the actionWhat biomechanics alone did not showThree professions, one phenomenon

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