I’ve been sidelined for several weeks with back pain, first day testing the waters squatting again. Feels good!
This isn’t my first time with back issues so goal is to focus on volume rather than max weight for awhile to reduce risk of aggravating whatevers going on.
Squats and deadlifts activate the lower back in a stabilizing fashion, which is almost always the way the lower back is used.
Hyperextensions can allow you to target them directly as assistance work, however, for example.