i deadlift about every week but i never go real heavy. Most of the time 315 is as heavy as i go and focus on my back. I think it's helping my muscles grow and i never feel any strain or anything.
pussy...
too many people put too much emphasis on teh lower back and as a result end up INJURING it due to over training. If you do alot of heavier, beltless lifts, your core, especially your lower back, gets plenty of attention!
other than squatting and deadlifting, my lower back gets NOTHING extra and feels better than ever! Am I as strong as I have ever been? no but I have less over all minor problems after leaving out direct lowerback work or monitoring my exercise choices to make sure it doesn't get too much action.
for most people.. if they just trained like an athlete instead of a bodybuilder..they'd produce a more functional and workable physique without becoming just "gym strong" and being more prone to injuries.
functional training..and SMART training are key elements in designing the proper program.