How does blunt trauma/bruising affect hypertrophy?

I've been hypertrophy training in the gym for about 9 months and have gained a lot of lean muscle and am somewhere around 10-12% body fat. I am considering joining an MMA class where I've been told we will do sparring every fortnight. Problem is, bruising has always gotten in the way of my training whenever it occurred. I remember one time a wooden plank fell off a shelf at work and bruised my tricep and even though it wasn't that damaging, internet advice said it would be best to wait for the bruise to fully heal before doing any intense exercise on the injured muscle until it was fully healed. The bruise was visible for another 5 days which is how long I waited to do any tricep exercises again(which includes compound movements like chest exercises and bench/shoulder presses). I am guessing that I will regularly sustain bruises of similar or worse significance most times I spar and I can't let this make me take too long off working out. How do other fighters integrate hypertrophy training with their combat training? How am I supposed to fit both in?