Best conditioning for 50+ year olds intermediate programs if have arthritis in toes
In the starting strength books I've read ("Practical programming for strength training"/"The barbell prescription") the its recommend to use weighted sleds for conditioning during the intermediate programs. I hope this question may be useful for a few others out there if they have similar problems with arthritis.
I am nearly 50+ and will be doing at some point an intermediate program, so have given thought to conditioning. I liked the idea of using a weighted sled but my big toes have bones that are fusing together and cannot bend far back and cause pain if I do. I can do squats/deadlifts/presses without problem as my foot is flat and does not load bear by pushing my toes back (or up). My pediatrist said pulling a sled walking backward could be ok, but not pushing or pulling walking forward. He also advises me against running/sprinting/lunging much.
In my age group and situation what would you next best or next two best ways of conditioning that I could so hopefully for the next 30 years or so?
I have a powerrack, barbells, plates, bench, lifting platform etc
Thanks for your input.