I'm not finding any solid answers and I'd like to request input from the community about a specific issue.
Note - I've been following T-Nation for some time but have not tapped into the community's knowledge base until now. I expect to contribute what little first-hand experience I have going forward in support of others.
Now, the question.
When doing squats for higher reps, or deadlift for higher reps, I get a "feeling" in my lower lumbar on either side of my spine that feels more like an aching than pain or soreness.
Honestly, it feels like I got kicked in the crotch, except it's in my lower back.
I am of the initial opinion that my form breaks down at the higher rep ranges, but being honest, there is no one in my gym that I'd expect to get good coaching from. It's a small time place with chosen few big lifters to liaise with.
When this happens, the only remedy is to take all the weight off my back, including standing or sitting. I literally have to lie down until it passes.
I think it is a weakness in my core strength being compensated for in my back, but I'm not sure. I was hoping there might be something glaring that I'm missing. I understand this is hard to diagnose without seeing my form in person, so I'm pretty much hoping that someone has experienced a similar odd aching feeling to me and corrected it in some way.
Just for reference, I'm weighing about 166 lbs these days, height of 5'9". My 2-3 rep squat max (low bar) is 325, deadlift is 435. I do not use a belt for either lift, so that may be a factor.
Thank you again for your time, and I appreciate your input. Cheers!