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Lucas Knowlton is a physician assistant (PA-C) in Primary Care Sports Medicine at Scottsdale Sports Medicine Institute. One of his main clinical specialties is the research and testing of metabolic substrate utilization in athletes at every level of fitness.
David G Carfagno is owner/physician at Scottsdale Sports Medicine Institute. He presently serves as Medical Director of Ironman Arizona and Medical Director for PF Changs Rock and Roll Marathon.