I have been working with this client for 4 months. She is lean and strong, but her ultimate goal is muscle hypertrophy. I have educated her to the fact that she cannnot achieve the same results as a man, due to testosterone levels, and she realizes this. Any and all advice as to how you would train her, moving forward, would be appreciated. How much cardio can she do and still gain the mass? Thank you in advance.
It is really individual (as is putting on muscle mass), and often it is more to do with how much energy one puts into weight training vs. aerobics (ie too much aerobics takes away time and energy from the weights). She should be doing the basic cardio requirements (at least 3-5 days a week of 20-30 minutes). If she is already lean then the focus of the rest of her workout should be strength training, with periodization built in to help her work on hypertrophy.