I've been struggling with the stiff legged windmill and now I am experiencing low back pain on my left side in the sciatic nerve area after performing them, which leads me to believe that my poor form is the reason for the pain. I was previously diagnosed with a degenerative disc in my lumbar spine (L5) about 6 months ago and completed physical therapy which alleviated the symptoms prior to starting foundations. Now I am experiencing similar pain to 6 months ago, but not as severe. 6 months ago I had a severe limp walking now I can walk fine, but I am experiencing occasional pain on the left side of my lower back.
With that said, I have two questions.
1) Does my form in the video (video: https://youtu.be/lwFr2w2rrv4 ) show any obvious flaws in my form that would cause this pain? If not are the any other exercises that could cause these symptoms?
2) What would you recommend moving forward? Right now I plan on resting until the symptoms lessen, but I am not sure if I should continue to work with the windmills or look for a substitute progress?
Any advice would be greatly appreciated.