The study showed that the POSE method reduces pressure around the knee. An observation of the participants of that study also showed that a large percentage of them developed achilles & soleus injuries possibly due to transitioning from heel to mid/fore foot striking.
I think his strengthening & plyometric exercises are excellent, but that the conditioning phasing needs to be very much longer for the average athlete – in fact it should take years, rather than only weeks. The exercises may also need to be graded, as some are so advanced as to pose the risk of serious injury to the less skilled & conditioned athlete. I fully agree with the forward lean & the concept of going from one pose on the left leg to the same pose on the right leg. Closed loop, reflex actions need a starting point to begin the work of effective correction if required. Running being cyclical makes it hard to intellectualize as well as teach from a static perspective.
Let’s get down to the points where I disagree. Please note that I have always felt that what Nicolas demonstrates versus what he says/teaches in explanation of what he is doing is contradictory. What he is doing looks right, how he explains it does not. Also bear in mind that running involves so much eccentric loading & unloading & an elastic return to power ratio on 5 to 1, that is exceedingly hard to measure what is truly concentrically contracting & what has eccentrically loaded & is "passively" unloading, so both he & I speak empirically to some degree. Hopefully my ideas are an accurate summation of what pressure plate & other testing (like measuring muscle contraction & high speed videography) have shown.
- Nicolas feels all runners should run on their forefoot – I disagree, many people do not have the strength, conditioning, mechanics or structure to safely do so. Transitioning a runner is slow, pain staking, risky & sometimes not possible. Some of the greatest runners on earth are heel strikers or full foot strikers. Correct forefoot running may be faster, “softer” & more powerful, but demands high degrees of resilience, specific strength & conditioning. Heavier runners beware.
- Nicolas feels that there is no propulsive phase. He feels that correct lean/alignment & limb position will have you fall forward & gain momentum through gravity alone. I feel that the “springs” need to be loaded, thus there is a downward thrust of the leg to apply the rigid leg to the surface to load & then subsequently unload through the ankle, knee & hip hinges. Note that this does NOT imply “pushing” when the foot is on the surface, but before (from knee up position to surface contact). Thereafter the loading occurs passively (albeit rigidly) to preset ligaments & muscles (especially in the plantar fascia & achilles tendon) to store & then timeously release that elastic energy as propulsion. Here is the propulsion phase - the unloading
- Nicolas believes that this “falling” from one pose to the next is set up by the forward lean & the concentric firing of the hamstring & in so doing raising the heel up to the hips/glutes. I disagree most strongly here, as the loading, eccentrically & elastically of the hip flexors (especially the iliopsoas) through the downward (& rearward, because of momentum) thrust of the leg through glute & quad extension causes the knee to snap elastically forward (the psoas does not actively contract, but controls the release speed). The knee folds in this process (sheer physics) of the knee being snapped forward by the releasing hip flexors, bringing the heel towards the hips to shorten the lever (& taking the shortest route, like the tip of a cracked whip). The hamstring's job is to eccentrically decelerate the lower leg from this point so as not to flip out forward & allow the knee to lock while still air born. This would lead to an excessive braking phase as the foot contacts the surface too far ahead of the dynamic center of mass. There has to be a braking point, but the runner must attempt to reduce this to the minimum – sufficient only to stop them from face planting! A characteristic of great runners is this minimized breaking effect. By lifting the heel up & falling a float phase is set up, which robs the runner of stride rate, a key determinant of successful running. By lifting the heel towards the glutes elastic propulsion is compromised & the main mass of the body is not propelled forward. That's why, in my opinion, when Nicolas, or one of his converts runs they seem to have too much range of motion with too much muscular work for the speed they are generating - they look inefficient; like they are using too much energy for the level of propulsion they are achieving.
I end off by saying that this is my interpretation of what Nicolas is teaching with the POSE method – I may very well be wrong in my assessment. In my 28 years of coaching I have come to a point where I want to help every level of runner achieve a running style or form that allows them to run as fast as their physiology will allow them, to run as far as they need to in order to achieve the desired training effect & not become injured in that process. Instead of teaching one method to every runner, I take what the runner brings & try to work with this, creating the best possible running scenario for them, given their specific physical idiosyncrasies as they pertain to their running mechanics. I try not to make them "mugus", a South African term for a square peg in a round hole!