Some sensible words from urigeller and superfiz, for all the weighty evidence in favour or specific "re-training" , one cannot deny that abdominal stregthening regimes done regularly are effective, be they specific with guidance , or just hacked away at by the untrained.
A fatigue resistant core group of muscles ready to accept load when inadvertant strain is felt , would obviously be better than to leave recovery to chance. The difficulty lies with patient compliance to routines requiring skill and sensitivity. The best exercise routine is the one that the patient will actually do, rather than a beautifully crafted regime with written material and an array of detail that is quickly put in the bin.