dissidente wrote:Or perhaps there is a difference between doing normal crunches and more holistic exercises like those in pilates/yoga?
Yes, there just might be.
The normal crunches etc. will build
some useful connection of the torso to the lower body. It will also get the viscera loving around -- always a good thing.
But Pilates is a big step up. Pilates considers the entire torso as important and will help if your martial style considers the torso to be the dantien. Some versions of chen style like Hong Jun-shen's (sp?) do this. For those styles that emphasize whole body power (Gao style BGZ, xinhyi liu he, etc.), Pilates is tops.
The yoga that I do is a bit rare - svastha yoga. But it uses the dantien (as in the lower belly) as a catalyst to produce all movement. The dantien and the breath lift and lower the limbs in the yoga. This is a step up in complexity beyond Pilates and is more in line with IMA that treat the dantien as a separate power source. But this type of yoga is quite rare.
Hope some of that helped.