Yes, muscles were weak during chemo, legs did not respond when I tried to walk briskly, and I had to stop three times when trying to climb a hill near my home. My arms were a bit better, but still tired easily.
I am 6 weeks out from last Docetaxol and the strength is returning.
I have exercises from the exercise physiologist which help, and I am pushing myself a bit more with walking.
A few weeks ago I was despairing, thinking that was how I was going to be, but I am improving rapidly now, so I hope you will when you get a few more weeks along too.