Photograph of Irvine (Scooter) Warburton, a University of Southern California football player, on a football field at USD, wearing equipment to participate in the "Douglas bag" fitness test for USC Professor Dr. Francis Baldwin.
Irvine Warburton, a University of Southern California football player, breathes through a value with a bag attached as part of an experiment conducted by USC Dr. Francis Baldwin. He is standing on a football field at USC.