In the most comprehensive attempt yet to attack the epidemic of Type 2 diabetes in children, a study led by Temple researchers found last week that implementing school-based changes, such as healthier food options and more physical education time, significantly reduced several major risk factors for Type 2 diabetes. In gym class, for example, "instead of doing layups, with most kids standing in line, we had things set up so balls were being passed back and forth while they waited," said Gary Foster, director of Temple's Center for Obesity Research and Education, who chaired the national study. And in the cafeteria, the standard pizza was replaced with the same manufacturer's whole-grain, lower-fat version. That shaved nearly 100 calories per slice and the kids didn't notice, said Amy Virus, a registered dietician at Temple who coordinated the study's nutrition component.