'Fractured endurance' is the correct, medical term.
Second, how sad is it that we are expecting the referees (like teachers) to be responsible for enforcing ethics. I had a family with pride that passed it on to me by my dad's foot, my mom's woodenspoon, and my brother's fists. If the kid fakes, leave it up to the other guy to make him pay for it. The referee can't be responsible for points, meet management, condition of the mat, hair, nails, skin, shave, style of uniform, cleanliness of the mat, sportsmanship of the fans/coaches/athletes, and be a doctor as well.