New to the forum here. I’m was casual powerlifter (newbie) and in 2014 while doing a 1RM max of 455 pounds at 170 pounds body weight, I messed up my back. Went and got an MRI and it turned out that I slipped a disc (L5-S1). Ever since then, my back still hurts until this day (can’t deadlift or squat without feeling pain in my back). Ever since then I stopped lifting pretty much (would do it casually here and there for light weights) but for the past month or so I’ve been itching to lift weights again and finally today I decided to deadlift for the first time in three years. I did 5x5 of 225 and felt minor pain in the first 4 sets then in the last set I felt a lot of pain in my lower back. After that, I decided to do a 1RM max of 300 (stupid I know). Felt minor pain during the 1RM but was okay overall. About an hour later after I finished, I started feeling a lot of pain in my back. Luckily I recorded myself doing 225 pounds x 5 and 300 pounds x 1. I currently weigh 200 pounds and in horrible shape. I feel like I’m rounding my back but I’m not sure, can you please watch the videos and give me your feedback?
225 x 5:
300 x 1: