OK. I"ve done what I like to do the most. Research..and plenty of it. From what I found, is that if you feel you have pain in your lower back, it would indicate that you may have poor ankle mobility (note not flexibility, they are two different things). That as well as poor hip mobility & glute flexibility. I highly recommend that you surf over to
Youtube & search for 'Ankle mobility drills'.
When you squat, do you find your ankles elevate (come off the ground), while a lot of stress is on your toes? This is a red flag for poor ankle mobility.
I wouldn't say you have a weak back. The back pain you're feeling could be a sign that your lower back is doing tooo much of the work, instead of your glutes, hamstrings & calves).
Damn dude that's exactly what happens... My heels come off the ground when I squat... I'm on my done so I will post up more when I'm home....
Thank you all for your informative posts!!!
When I"m prepared i"ll make a good post about flexibility & Mobility. How I feel that over the next ten or so years, it will become as 'attractive' as strength &/or power training. I strongly believe that gluite flexibility, hip mobility & correctly equipped hammstrings are major contributors to performance.