1 Fitness impacts salivary antimicrobial protein responses to a single bout of cycling exercise. Hawley Kunz a , Nicolette C. Bishop a,b , Guillaume Spielmann a , Mira Pistillo a , Justin Reed a , Teja Ograjsek a , Yoonjung Park a , Satish K. Mehta c , Duane L. Pierson a,c , Richard J. Simpson a a Laboratory of Integrated Physiology Department of Health and Human Performance University of Houston 3855 Holman St. Rm 104 Garrison Houston, TX 77204 b School of Sport, Exercise and Health Sciences Loughborough University, Loughborough, UK c NASA Johnson Space Center Division of Biomedical and Environmental Sciences Houston, TX, United States Corresponding Author: Dr. Richard J. Simpson Email: rjsimpso@central.uh.edu Phone: 713-743-9270 Fax: 713-743-9860