Lower Back Pop Unracking For A Squat
Hi - I'm 41 now and on DL's, whenever I'd get to around 300 I'd tweak my back. A few weeks ago, I was doing 225 and when lowering the weight, my lower back popped on the left side then immediately tightened up. I let it heal for a while then went to a coach because I figured it was form. Ok great.
Today, I was squatting. I've been squatting for seven or so years but not heavy (I start getting anxious under the bar at a certain weight) but recently decided to start increasing weight again. I had 225 on the bar today. I did the first set successfully. On the second, as I was unracking the weight...literally standing the bar out of the rack, my lower back popped again. The pain/tightness is on the lower left side. This has never happened. The pain is manageable but enough to tell me to quit doing stuff. I'm kind of at a loss because this sort of thing keeps happening now. It's never happened before. A) Does this sound like anything anyone has heard of? B) Is this a function of age (didn't happen until I turned 40). C) Based on this minimal amount of information, do you have any recommendations on how to proceed? More core work/maybe I'm not bracing my core enough/more warmup, etc.?
I realize this is kind of a vague description so if you need more information, please tell me. I'm just so frustrated. Thank you.