Originally Posted by elmersglue
Yea, I just started to do weight training.. but i have this thing called osgood-schlater disease which is that my bones in my knees grow faster than the legiments so i cant bend them as far .. but it will go away once i stop growing which is good cus it means im still growing. So i can only work on my upper body.
Yeah. It's quite a common disease in quickly developing bodies. I have never understood if I had it too, but a few friends of mine had it, and got no kind of serious problem. (My injury had nothing to do with that :) ) You shouldn't worry, but I see you aren't, and that's ok.
But, however, that doesn't mean you cannot train your strenght. As I said, the exercises I exlplained in my first answer are thought to train srenght in young athletes, whose connetive tissue (ligamens and tendons) are weaker in comparison to the muscles. You can run uphill, and I think (but you should check it with your coach and/or doctor) that you can run or jump up the gym stairs, for example, if you take care to do exercises that do not bring the angle between leg and thigh to be smaller than 90°.
I don't think it should be your prerogative right now, because you have more important aspects of your game to work on, but if you have spare time, I think you should be "allowed" to do this kind of works. I repeat, however, check with who diagnosed you the disease.