The general consensus these days seems to be that the role of the core is to provide stability. Front and side planks seem to be popular and effective ways of training in this way.
I was wondering what people think of inverted planks like the one pictured here. I’m especially interested because I’ve hurt my lower back several times because I was unable to maintain a neutral spine on heavy squats and deadlifts. I tried a few sets of these today and they felt very good. Opinions?