I'm pretty sure that at OASC, the only physical test is the Bleep Test. If I remember rightly, if you are male and achieve over 10.11 you get an 'excellent' tick. With a bit of effort training before the day, it shouldn't be hard to achieve in the elevens.
I can't remember press-ups being in it. The standard way to do a press up is with a buddy placing a fist under your chest. With the back straight, you must touch the fist with your chest to count as one.