What stat should I increase to not get knocked down from body checks so easily in "Be a Pro"?

In the beginning of the season I was able to line up shots and score a lot. However, once opponents realized that my player was a threat they have a guy stuck to me and knocking me down every time I take a shot. Is there a stat that I should focus on to be able to take body checks without going down every time? I've increased strength a lot but I still can't fight through these checks and it's getting annoying that I have to take fast, inaccurate shots every time I shoot at the net.