That’s always the challenge, especially if you do not have a pull-up bar which stinks because I do not have one either. Some things that I’ve been doing are inverted rows on a table or other stable surfaces that are not going to topple down. Obviously check to make sure whatever you’re performing your inverted row on is stable before doing so.
You can have a friend hold a wobbly desk down and have you do it on the end of that, or you can do things like grabbing the towel, placing it around let’s say a beam or a banister that’s pretty sturdy and doing more of let’s call them like a TRX inverted row. Where you can lean, and you could pull that way.
You can find a tile or a hardwood floor that you can slide it on, place a towel on the ground, then what you’ll do is you’ll lay prone on the ground. Bring the chest up slightly, put the hands out in front of you, as if you’re making a touchdown on a platform, then you’ll pull yourself up thinking about really driving those lats down.
Similar to how you do a rope pull-down when you’re standing up trying to focus on a little bit of lat contraction. Obviously it’s not going to be the same as loading up a heavy barbell and performing deadlifts, but those are some ways you can help the back. You can also try doing the elbow push-ups.
When you lay on your back, you drive the elbows down and you squeeze the ROM voids to create a slight lift with the upper back. If you have another human being, you can perform some form of good morning, or some other form of actually lifting the human off the ground and doing some modified RDL or deadlift work.
If you really want to focus on the glutes and the lower back, you can lay on a more firm surface. I wouldn’t recommend using a bed for this, but you can, but doing a reverse hyper almost in lifting those legs up, causing a nice level of contraction on the glutes and lower back, or the glutes for that matter and not lower back.
The back is tough because if you are limited to weight, there’s not so much you can do when trying to match that same load you would get from a barbell on a deadlift, but there are ways you can train around it.
I just think it’s going to come down to most accepting that if you do train the deadlift a lot and your deadlift is very strong, you’re likely going to lose a little bit of strength there, but it will come back once we’re out of isolation.