I run ultra distance as a hobby, and before lockdown, I lifted heavy weights twice a week to prevent catabolism. Since lockdown began, I have continued to work

I run ultra distance as a hobby, and before lockdown, I lifted heavy weights twice a week to prevent catabolism. Since lockdown began, I have continued to work out as hard as I can, but I have lost a significant amount of strength and muscle mass. You just can't get a certain type of training stimulus without barbells and plates. I imagine that the problem is much worse for bodybuilders and powerlifters.