How can I make my dad understand that I am not a small kid anymore?"?

I am 16 male my father treats me like a puppet. I do everything he says without asking my opinion. 2 years ago he made me start discus throw. I didn’t want to. I don’t like it. and I asked him very gently if I could go boxing ONCE a week for 1 hour (at discus I go every day for 3 hours), but without thinking it and without explain me any reasons he said no. So i found the courage and went boxing without telling him. Well, I know it was wrong but it was the only way! Anyway, when i got home he started shouting because i didn’t tell him where I was going. So he kicked me out. My father’s childhood was really tough! He was the younger in his family, the seventh child..
So all the bad things happened to him does them to me.. It’s not just the boxing.. he never lets me go out, he never lets me do anything. My grades are really good, and i just cant understand why he treats me this way. What should I do to make him understand that i am not a small kid anymore, And that i can take care of my self???