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Crawling, all fours, rolling on the floor: what primal movement offers adults and athletes, what the data say, and how to use it.
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What primal movements bring to the athlete, and what you cannot ask of them
Hello to you, the movement professional,
Lay a five-month-old infant on their back, with a toy a little off to one side. The eyes go first, the head follows, the shoulders wind around and the pelvis arrives last, like a towel being wrung out. Ask an adult to do the same: they throw one leg over the other, the pelvis flips all at once, and the head follows as best it can.
Crawling, walking on all fours or rolling on the floor in adulthood is mainly used to work contralateral coordination, weight-bearing through the hands and shoulders, and control of the head on the trunk, in a position where balance costs little. For the RNP reading, these primal movements serve above all to read what drops out, and only afterwards as an exercise.
Primal movement refers to all the movements the infant explores on the floor before walking: rolling, belly crawling, all fours, transitions to sitting.
As soon as you talk about floor-based movement with pros, one image arrives very quickly: a staircase, with compulsory steps. The child didn't do the all-fours step? Then they would have to do it again.
Development looks more like a hiking trail, with its shortcuts and detours. We find an indicative sequence in many children, and enormous variability from one to the next.
Stage | Indicative landmark | What is being built |
|---|---|---|
Rolling back-to-belly and belly-to-back | around 4 to 6 months | raising the head, rotation between the girdles |
Creeping, belly crawling | often between 6 and 9 months | alternating arm-leg push, support on the forearms |
All fours | around 7 to 10 months, a very wide window | hand-knee support, head-trunk dissociation |
Independent walking | between about 9 and 18 months | standing balance, orientation in space |
Take these ages as orders of magnitude. Some children crawl for a long time, others get around sitting on their bottoms, and still others go almost straight to upright by gripping the furniture.
A widespread explanation holds that every missed motor stage leaves a "hole" to be filled later. The data are much more cautious.
The World Health Organization's multicentre growth reference study, published in 2006, followed the motor development of healthy children in several countries. Of the six major milestones observed, all fours is the one that varies the most. A small fraction of children, on the order of a few percent, never go through it and still walk within the usual timeframe.
To date, no robust data show that a child who skips all fours will pay for it later. Associations turn up in small studies with heterogeneous methods, and an association remains an association. The prudent approach is to observe how the child or adult moves today, rather than looking in their history for a missing stage.
Take the opposite case. An adult did a perfect all-fours at nine months, and thirty years later they block all head rotation as soon as they move into hand support. Their movement today tells you far more than what they did at nine months.
Go back to the baby from the start. In them, the roll starts from a sensory input: the gaze catches something, the head stretches to go and get it, and the rest of the body unrolls behind, segment by segment, in a spiral.
The adult starts from the periphery and from momentum. The leg gives the impulse, the pelvis follows as a block, the head arrives last. Both strategies work, agreed. Except that the second one tells you something: in many adults, the head and the gaze have lost their role as conductor.
For anyone reading the sensorimotor loop, this is a very profitable observation. Ten seconds, no equipment, and you compare one side with the other. Often, in fact, one of the two sides comes close to the baby and the other not at all.
What happens, do you think, when you ask that same adult to roll over starting only from the eyes?
In adults and athletes, floor work keeps real value, provided you know what you are asking of it. In the field, it serves four purposes.
It puts contralateral coordination back into play: right arm and left leg moving forward together, as in walking and running. On the floor, this pattern shows without the noise of standing balance.
It loads the hands and shoulders. The shoulder girdle works in support, something many adults' lives hardly ask for anymore (the wrists remember it first, in the early days). In the person you are working with, you immediately feel the weight collapsing into one shoulder, the elbow locking, the fingers clenching on the mat.
It makes head-trunk control readable, as soon as you add head movements on all fours. This is the position in which the STNR is best observed: when the head lifts or lowers, do the arm support and the pelvis placement change?
And it removes the threat. The floor reduces balance demands, and a nervous system that feels safe dares more amplitude and more variability. This is the principle of the body in the dark: before switching a zone back on, you offer it a context where it can express itself without everything else tensing up to protect it.
For the warm-up, one variant works well. Quadrupedal position with knees lifted, the "bear crawl", held static for a few seconds, with slow head rotations to the right and to the left, then in flexion and extension. The body must stay still while the head moves, and the head-trunk dissociation is put directly to the test.
The link between primal movement and archaic reflexes is often presented as self-evident. Let's look at what we really know.
An archaic reflex is integrated over the course of development: the cortex places it under inhibition, without erasing it. We have known this since Hughlings Jackson, and we see it with frontal release signs in adults after a brain lesion. Put simply, the cortex learns to say no to the brainstem. A residual reflex, such as an ATNR that is still visible, remains an indicator of the sense that has not finished its wiring, never a culprit.
Level | What can be said |
|---|---|
Established | Floor-based movement follows a highly variable indicative sequence; all fours is absent in a small fraction of healthy children. |
Debated | The link between skipped motor stages and later difficulties rests on associations, with no demonstrated causality. |
Field reading | Crawling, all fours and rolling reveal asymmetries and head-trunk compensations that are useful to read in adults. |
Unfounded | The idea that a standard crawling program "integrates" archaic reflexes. |
Controlled trials on crawling and all fours in adults remain rare. What follows is therefore a field reading, consistent with what we know about motor control, and it stops there. Integration takes a different path from a standard exercise: you read the sense that is revealed, you switch the input back on, and integration follows. The two logics are compared in the article inhibiting or integrating an archaic reflex.
In the grid of Neuro-Postural Reprogramming, crawling and all fours serve first to read. You look at what drops out: a head that drags the shoulders along instead of turning on its own, one side pushing while the other trails, breathing that cuts off at every change of support. Each of these signals tells you where the loop is short of information.
For progression, count three stages. Passive: you guide the movement, the person lets it happen, and you feel under your hands where it resists. Accompanied: they initiate and you support, one hand on the head or the pelvis. Alone, finally: they reproduce the pattern without help, slowly.
Dosage stays short and regular: a few repetitions, one to two minutes, several times a week, always within comfort. Then you retest what you had observed at the start, a head rotation, a single-leg support, a sport movement. Test, stimulation, retest. Without the retest, you don't know whether the stimulation served the person in front of you.
The same roll can, incidentally, serve very different populations. With a child, it becomes a game, passive, guided from the head. With a high-level athlete, you ask for it very slow, controlled segment by segment, maximal activation, gaze first. The movement barely changes from one case to the other; it is the intention and the demand that change. This rotation work also prepares the reading of midline crossing, another valuable signal in the athlete.
No crawling program will make up for a missed developmental stage, and none will change performance on its own. What primal movement offers you is a simple reading window and a threat-free context for exploration. That is already a lot.
One falsifiable prediction, to finish: in an adult whose head drags the shoulders along when rolling, rolling work initiated by the gaze should improve the head-trunk dissociation retested in the same session. If nothing moves after several sessions, it is your reading that needs revisiting.
To go further, the article archaic reflexes in adults details how these indicators are read in the athlete.
On the floor, the body shows without cheating what standing lets it hide.
👉 I want to understand why, not just what.
Yes, if you know what you are looking for. Crawling calls on contralateral coordination, forearm support and rotation between the girdles, in a position where balance costs little. It is also a very good way to spot asymmetries.
Walking on all fours loads the hands and shoulders, trains coordination between opposite arm and leg, and makes control of the head on the trunk visible. Controlled trials remain few in adults; its value rests mainly on a field reading.
The WHO milestones show that a small fraction of healthy children never go through all fours. No consequence has been robustly demonstrated. It is better to observe how the child moves today than to look for a missing stage.
No solid data allow us to claim so. Integrating a reflex means placing it under cortical inhibition, at the pace of the wiring of the sense concerned. Crawling helps read that sense; it does not replace that wiring.
Primal movements are the motor patterns the infant explores on the floor before walking: rolling, creeping, all fours, transitions to sitting. In adults, we take them up again as tools for reading and for motor exploration.
No. LabO RNP is neither medical nor paramedical, and is an addition to a care pathway, never a replacement for it.
By the LabO RNP team
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