Look, I don't want to beat this core stabilizaton thing to death, but Hodges work in 90's was misinterpreted! Thats not me saying it- it's Doctor Hodges himself!!:
The lumbar multifidus: Does the evidence support clinical beliefs? Manual Therapy, Volume 11, Issue 4, Pages 254-263D. MacDonald, G. Lorimer Moseley, P. Hodges 2007
“Although there is support for the importance of the lumbar multifidus and the specific contribution of this muscle to intervertebral control, several of the clinical beliefs have little or no support “.
Feedforward Responses of Transversus Abdominis Are Directionally Specific
and Act Asymmetrically: Implications for Core Stability Theories, JOSPT 5/08
"bilateral activation of the TrA in isolation does not reflect the normal
motor pattern for rapid unilateral ballistic patterns of movement and, therefore, future research may examine if such training may detrain individuals who require such fast actions (eg, elite athletes).”
There is an article in the NSCA's "journal of strength & conditioning" this month that makes the statement, "development of the core is accomplished first through ISOMETRIC STABILITY with progression to multi joint movements involving the hip, torso, and scapular region". Readers of my blog know I believe in the concept of a "reactive core". One that emphasises training in the "zones of transformation"; that is when the body is switching directions and injuries occur. There is nothing wrong with doing isometric bracing movements (planks et al). As long as it is understood they occur in a neutral zone. A truly strong core is one that can take a direct blow, protect us from falls, as well as coordiate the upper & lower extremities in a fluid, coordinated manner.
The article makes references to Hodges original work in the 90's. I think that's where this "rigid pillar" isometric-style core gets it's origin. I know Doctor Eyal Lederman of London's Center for Professional Development in Osteopathy (www.cpdo.net/myth_of_core_stability.doc) occasionally tunes into this blog. If you're out there doctor, I'd really appreciate your opinion on this.