Opposite of while?

So, I was working with the collision detection in my game and something came up -

I had to change an if statement to an while statement. Simplified code follows:

if(colision)                                             while(colision)

{                                                            {

player.y -=5;                                             player.y -=5;

playerColided = true;                                 playerColided = true;

}                                        ------------>       }

else                                                       ???

{                                                            {

playerColided = false;                              playerColided = false;

}                                                            }

Once I changed to while, I could not find something to do the "else" role, like "while not" or something like that, in a manner that while the while statement is not active, the playerColided Boolean becomes false. Is there an statement that can do this?

Thanks in advance, Dan.