Yes. Lack of T puts a serious damper on increasing muscle mass as well as absolute strength. I have a T level of "4" as of last check, I have moderate cardio endurance in the gym, but am really a lightweight on quantifiable strength. I did a modest amount of biking(work commute) early in transition, and see no visual downside to it now. I am avoiding calf build, always hated em.
My general goal is just to be a good cardiac condition for my upcoming surgical recovery period. As it is, Dr Bowers ordered an EKG just today based on my health history.