I had been doing romanian deadlifts with DBs for a while, max weight I used was 24 kg DB I think. Then I had 2 weeks layoff. On my leg day I did romanian deadlifts again but with a barbell this time (for the first time ever) and I did 40 kg in my max set for 10 reps. It didnt feel heavy but I felt my lower back working a lot and my harmstrings not as much as I wanted to. Opposite to DBs which help me to really focus on hamstrings and less on lower back. Regardless of that. It was 2 days ago and my lower back is sore and stiff still. Its really hard to bend down or do anything where the lower back is stretched. I feel like an old man. I had some lower back issued several years ago but everything has been comletely fine in that regard, I just feel its sore now. But I just want to know your opinion and experience of you who do deadlifts often, if this is normal and when it will subside? Because I dont do deadlifts, last time I did them was 2 years ago.