I am 1m 78 and weigh 70 kgs. I've been performing compound movements in exercises like bench press, squats, military press, seated cable rows and lat pulldowns for about a month. I haven't gained much since then, so perhaps is time to incorporate isolation movements? I want to weigh 80 kgs by next summer. I am concerned about my back.
In order to built a strong upper body, I have to have a strong back. Should I start isolation movements and what other exercises should I do for my back?