I am 48 and haven't noticed any strength loss, endurance yes, but as far as being able to push max weight for a few reps, hasn't decreased yet
Being able to work hard all day, def can't do that like I used to- logging, roofing, helping somebody move a lot of stuff all day long .... again, endurance not there, but I can still do a decent max dead lift or bench or help move a piano or sleeper sofa- just need to go a little slower with the moving