In a report published by the Rudd Center for Food Policy and Obesity at Yale University, researchers studied 100 professional athletes and their endorsement contracts.

在耶鲁大学路德食品政策与肥胖研究中心（Rudd Centerfor Food Policy and Obesity）发表的一份报告中，研究人员研究了100名职业运动员及其代言合同。