Sixteen students enrolled in Personal Defense for Women, a two-credit class in the College of Public Health’s Kinesiology Department, form a large circle around instructor Jeff Chapman in a gymnasium at the back of McGonigle Hall. The young women are wearing their regular classroom clothes. Having trained for weeks, they’re ready to fight.    “We’re going to do some striking drills, and then I’m gonna use this dummy to attack them,” Chapman says. He points to the dummy, a thick red pad that’s in the shape of a human torso. The women shadow-box moves that they...