My 1 rep max deadlift is 180kg, but can't get close at the moment as it puts too much strain on the lower back. Don't want something to pop and make it worse.
Swings are high intensity, but fairly low impact, though I guess it depends on the amount of weight!
Deadlift much?
I would have thought a swing would place a jarring affect on your back. But that’s just my opinion.