My back gave way today while deadlifting. I’ve just started 5/3/1 and today was my first squat day. I was doing deadlifts at 50% of training max for my assistance work as outlined in Big but Boring. My back was fine while squatting. The first set of deadlifts was fine and was done at a brisk ‘touch and go’ pace. On the second or third rep of my second set I felt pain at my lower back.
Nothing extreme as I could still walk around. After that my back generally just felt sore, with the pain only coming when I bend over while standing up. It seems to be less painful bending over while sitting in a chair.
This has happened before about almost a year back. It cleared up within a few days and I rested for a month but it re-occured when I tried deadlifting again. I saw an orthopedic specialist who just told me to stop squatting or deadlifting and could not offer a concrete diagnosis but ruled out a slipped disc.
One thing I’ve noticed is that this tends to happen on sub-maximal lifts especially when they are for higher reps. I did stronglifts 5x5 3 years back and never had any issues with my back. Last week while establishing my 1RM for 5/3/1 I mainly did singles and it felt great.
It seems when I’m pulling heavier loads I tend to be more stiff which I can’t seem to get right when pulling lighter weight for reps. I was wondering what recommendations you would have for deadlifts as assistance work in my case.